857 Backend Engineer jobs in Ireland

COMPANY OVERVIEW

KKR is a leading global investment firm that offers alternative asset management as well as capital markets and insurance solutions. KKR aims to generate attractive investment returns by following a patient and disciplined investment approach, employing world-class people, and supporting growth in its portfolio companies and communities. KKR sponsors investment funds that invest in private equity, credit and real assets and has strategic partners that manage hedge funds. KKR's insurance subsidiaries offer retirement, life and reinsurance products under the management of Global Atlantic Financial Group. References to KKR's investments may include the activities of its sponsored funds and insurance subsidiaries.

Backend Engineer, Investment Operations Technology

ABOUT THE POSITION

The ideal candidate would have a strong familiarity of financial instruments and experience with full-stack development and data engineering using the modern technology stack. The candidate must have excellent programming and data management skills, strong verbal/written communication skills, and be a cultural fit with an emphasis on teamwork, excellence and results.

We are seeking a skilled and experienced Backend Engineer to join our dynamic development team. As a Backend Engineer, you will be responsible for designing, developing, and maintaining the server-side logic of our software applications and systems. Your expertise in programming languages, databases, and web technologies will be crucial in delivering high-quality and scalable backend solutions.

Role and Responsibilities

• Develop and maintain the server-side components of our software applications.

• Collaborate with cross-functional teams, including frontend engineers, data engineers, product managers, and designers, to ensure seamless integration of the frontend and backend components.

• Monitor and optimize the performance, scalability, and reliability of backend systems.

• Write clean, efficient, and well-documented code following best practices and coding standards.

• Design, implement, and optimize database structures and queries for efficient data storage and retrieval.

• Perform thorough testing and debugging to identify and resolve issues or bottlenecks.

• Stay updated with the latest industry trends and technologies and propose improvements to enhance the backend architecture and development processes.

• Participate in code reviews to maintain code quality and mentor junior developers.

• Collaborate with DevOps engineers to deploy and maintain backend applications in production environments.

• Provide technical guidance and support to the team members as needed.

Requirements

• Bachelor's or Master's degree in computer science, Software Engineering, or a related field.

• Strong proficiency in computer science fundamentals such as data structures and algorithms.

• Proven work experience as a Backend Engineer or similar role, with a focus on developing scalable web applications.

• Strong proficiency in one or more backend programming languages (python preferred).

• Experience with web frameworks and technologies, such as FastAPI, Flask or Django.

• Sound knowledge of databases and experience working with relational databases like SQL Server, Snowflake, PostgreSQL, or Oracle.

• Financial Industry experience or curiosity/savvy to learn and engage in Private Equity/Credit type of business domain.

• Familiarity with NoSQL databases like MongoDB or Redis is a plus.

• Solid understanding of RESTful API design principles and experience in building and consuming APIs.

• Proficiency in version control systems, such as Git, and collaborative development workflows.

• Strong problem-solving skills and ability to troubleshoot and debug complex backend issues.

• Excellent communication and collaboration skills, with the ability to work effectively in a team environment.

Additional Beneficial Skills/Knowledge

• Knowledge of Accounting or Advent Geneva
• Understanding of Data Engineering tools and platforms (data pipelines, data lake)
• Experience with cloud platforms like AWS, Azure, or Google Cloud Platform, and knowledge of containerization technologies like Docker or Kubernetes.
• Experience in one or more ofbank loans/leveraged loans, fixed-income products, CLOs, derivatives, ABS and CMBS products.

KKR is an equal opportunity employer. Individuals seeking employment are considered without regard to race, color, religion, national origin, age, sex, marital status, ancestry, physical or mental disability, veteran status, sexual orientation, or any other category protected by applicable law.

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Core Responsibilities

• Design, develop, and scale backend systems using Java and Spring Boot.
• Create low-latency search infrastructure with ElasticSearch, caching, and query optimization.
• Build and maintain supplier integrations across hotels, chains, and experiences, ensuring stability and fault tolerance.
• Implement real-time personalization and ranking logic to improve customer discovery and booking conversion.
• Enable AI-powered experiences by building APIs, data pipelines, and scalable systems for recommendations, personalization, and conversational interfaces.
• Develop and maintain database schemas, queries, and stored procedures across MySQL, MongoDB, and ElasticSearch.
• Deploy and optimize services on Linux and AWS environments (EC2, S3, RDS, Lambda, API Gateway).
• Implement and evolve microservices architecture and design APIs for communication between services.
• Monitor backend systems in production, troubleshoot issues, and deliver timely fixes.
• Collaborate with product, growth, and engineering teams to translate customer needs into backend solutions.
• Participate in code reviews, debugging, and documentation to ensure quality and maintainability.
• Stay current with new backend and AI technologies, introducing ideas for innovation and scale.

Candidate Requirements

• Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
• 2–5 years of backend development experience with Java and Spring Boot.
• Strong knowledge of relational and NoSQL databases (MySQL, MongoDB) and ability to design efficient schemas, queries, and stored procedures.
• Familiarity with ElasticSearch and interest in building low-latency search systems.
• Hands-on experience with Linux systems and deploying/maintaining backend services in production.
• Experience with AWS services (EC2, S3, RDS, Lambda, API Gateway) and cloud-native deployments.
• Understanding of microservices architecture with proven experience designing and implementing APIs for service communication.
• Strong problem-solving and analytical skills with a focus on scalability, reliability, and performance.
• Excitement to work in an AI-first company, building systems that power personalization, recommendations, and AI-driven experiences at scale.
• Excellent communication skills and the ability to collaborate effectively across product, growth, and engineering teams.

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Senior Backend Engineer - Applications

NewsWhip is the leading provider of predictive media intelligence, tracking and predicting engagement with the world's news stories each day.

Our platform is used each day by journalists at hundreds of top tier publications, and communications professionals at all 10 of the top 10 global PR agencies, dozens of international brands, and NGOs, international organisations and not-for-profits.

As an Irish company, our product and engineering functions are central to our business. This presents a great opportunity to directly input into what we build and how we build it. There is a direct link between your work, our customers and the continued success of NewsWhip.

As a Senior Backend Engineer on our Applications Team, you will be a key player in defining how this insight is delivered to customers. As an Applications Team member your remit will extend beyond just the ownership of delivery - you will be assisting in the research, refinement and execution of the features used to expose the value collated in our Data Platform to our customers in intuitive and novel ways.

Responsibilities:

• Develop features and improvements to NewsWhip products in a secure, well-tested, and performant way
• Collaborate with Product Management and other stakeholders within Engineering (Frontend, UX, etc.) to maintain a high bar for quality in a fast-paced, iterative environment
• Advocate for improvements to product quality, security, and performance
• Solve technical problems of moderate scope and complexity.
• Recognize impediments to our efficiency as a team ("technical debt"), propose and implement solutions

Requirements:

• 5+ years working in a Product Engineering team
• Experience collaborating with Product, Design and Frontend Engineering disciplines to deliver data-insight led features including activities relating to scoping, prototyping & research, identification of risks/uncertainties etc.
• Knowledge of software design principles and leading software development practices
• Willingness to get things done, learn new things, take initiative and challenge existing assumptions and conventions
• Experience with Java and/or Scala
• Experience building and deploying to any cloud service (GCP, AWS, Azure, etc.)
• Experience with building APIs for exposing rich datasets

Nice to have:

• Working with the Lightbend Reactive Platform of Scala, Akka or Play Framework
• Building an architecture to support rapid and stable product iteration cycles
• Significant development experience working on customer-facing and web-based systems
• Experience working in an agile environment with iterative development and fast feedback
• Working with storage systems such as Elasticsearch, Cassandra, Kafka and MySQL
• Experience with observability principals (Instrumentation, Tracing, Telemetry)
• Experience with IaC and DevOps methodologies
• Knowledge of basic Linux administration, Kubernetes and Google Cloud Platform

Benefits:

• Competitive salary
• Health insurance
• Pension
• Great working environment - remote first or hybrid model
• An opportunity to help define an entirely new industry category

Our ethos:

We believe in maintaining a friendly work environment, a healthy work-life balance, and compensating our employees fairly for their input. You'll be part of a team that believes in mutual support and education, and for a company where a work week isn't just the gap between weekends, but an opportunity to do work that is impactful and innovative. We also love eating and socializing together, annual and seasonal company and team retreats, healthy and unhealthy snacks and other perks.

Keelvar has an exciting opportunity to join our Engineering & Product Team as a Senior Backend Software Engineer. This role is remotely based in either Ireland (ideally in Cork) or Germany (ideally in Berlin).

Reporting to one of our Engineering Managers, you will be part of a critical group responsible for supporting and building new and existing features with a cross functional team. The successful candidate will join a group of engineers from different backgrounds including Software Dev, Data Science, UI and Product design.

Responsibilities

• Work in a cross functional development team analysing product feature requests and designing solutions.
• Build and maintain backend services with a strong focus on performance, maintainability, and production-readiness.
• Take a hands-on approach to shipping high-quality code incrementally — we value learning through iteration over aiming for perfection upfront.
• Participate in code reviews and architecture discussions to ensure technical excellence and knowledge sharing.
• Work closely with the Product team to shape features that are valuable, feasible, and grounded in users needs.
• Collaborate with colleagues across the organisation to ensure vision is delivered.
• Assist and mentor junior team members.

Your profile

• Strong proficiency and at least 7 years of experience in software development, ideally developing SaaS solutions.
• Experience in Python and its ecosystem.
• Experience of working with CI/CD processes and in an agile, product led environment.
• Experience designing distributed services which can communicate in a fault-tolerant manner using both RESTful and event-driven APIs.
• Comfortable with DevOps practices, cloud environments (ideally AWS), and monitoring tools, you own your code in production.
• Product mindset: you think in terms of value to users, not just technical challenges, and you're willing to experiment to find what works.
• You are a deep thinker, you like to innovate, you like to solve problems creatively and quickly, and are passionate about technology and people.
• You thrive in an environment of mutual respect, openness and collaboration. You enjoy getting things done at a quick pace.

We are a diverse group and we intend to continue to attract and retain diverse talent in our organisation. We're committed to an inclusive and diverse Keelvar. We do not discriminate based on gender, ethnicity, sexual orientation, religion, civil or family status, age, disability, or race.

The Role

• Senior Developer with 5+ years' experience delivering design/code of high quality

• Drive design and development in Java 17 and above using Object Oriented SOLID principles and patterns towards creating reusable and scalable microservices leveraging technologies such as Spring Boot Framework, and Event Driven Architecture.

• Develop in a CICD Environemnet leveraging any one of the Cloud Frameworks.

• Leverage the appropriate persistence mechanisms such as RDBMS, No SQL etc based on needs

• Implement Coding Best Practices. Implement Code Quality gates as per the program norms.

• Perform various Proofs-of-concept depending on the business needs

• Coordinate with various groups in MasterCard to ensure success of the projects

• Exhibit teamwork aligned completely with the Agile environment

• Provide technical mentoring/training for junior developers based on the needs

All About You

• Passionate about technology, with strong Object-Oriented Design & Programming skills

• In depth knowledge on product development

• Strong expertise in Java and Spring Boot. Experience working on Event Driven Architecture would be an advantage.

• Experience in Online / Real Time Systems development

• Experience in CI and CD

• Experience in Cloud based development is desirable

• Strong Communicator

• Quick grasping and learning abilities

• Technical Mentoring Skills

Permanent employee, Full-time

Ireland/Germany

Your opportunity:

Make a real difference in the blockchain industry Build the change you want to see.

We are looking for an experienced Senior Backend Engineer to join the
Decentralized Trust and Identity Solutions team
. We are seeking an individual with experience in building distributed systems that are designed with security and fault-tolerance in mind.

You would be working with emerging decentralized identity protocols such as
Key Event Receipt Infrastructure
and
Authentic Chained Data Containers
. The ideal candidate should show a keen interest in learning the inner workings of such technologies and how they can be applied to solve business needs, in a secure and reliable way.

• Design, develop and maintain scalable decentralized identity solutions in collaboration with architects and other engineers.
• Be a key player in transforming business requirements to solutions in collaboration with the team and external stakeholders.
• Ensure world-class security best practices are first class citizens in design.
• Build reliable systems that can handle unpredictable circumstances, out-of-order messaging delivery, etc.
• Ensure delivered code is robust, well tested and has high maintainability to minimize risks from security bugs.
• Engage and collaborate with the open source community to mature our identity ecosystem, and review innovations in the space.

We work in an open source environment that is prone to rapid change and innovation across various tech stacks. You would be developing our
Veridian Wallet
as well as contributing to the wider open source community repositories, such as
keripy
,
KERIA
,
Signify-TS
and
Signify-Java
.

Your story:

• A strong foundation in Computer Science, or a related field, by way of a Bachelor's degree or higher.
• Minimum of 5 years of experience in a similar security sensitive domain, such as IoT or Telecommunications.
• Experience in implementing protocols for reliable device-to-device communication, with a focus on embedded systems or low-level network stacks.
• Experience in working in a fast paced open source environment.
• Expertise in typed programming languages such as Java or TypeScript.
• Solid understanding in cryptography and key management, with bonus points for industry experience in this area.
• Ability to deliver high-quality and maintainable software that can stand the test of time.
• Excellent communication, documentation and collaboration skills, preferably with an interest in applying asynchronous communication patterns.

Apply for this job

About us:

The Cardano Foundation is an independent, Swiss-based not-for-profit organization. The Foundation is tasked with advancing the public digital infrastructure Cardano and works to anchor it as a utility for financial and social systems, thus empowering the digital architects of the future.

The Foundation facilitates the worldwide advancement of Cardano in enterprise applications. It develops infrastructure tooling—including where there may not be an immediate commercial use case—plus strengthens operational resilience, and drives diversity of on-infrastructure use cases as well as the development of sound and representative governance.

Another significant part of the Cardano Foundation's mission is to engage with and support the Cardano community. The Foundation assists the development of tools the community can use to leverage Cardano to solve problems in new ways.

The Cardano Foundation has incredible employees from over 24 nationalities, across 3 continents, working together to grow the Foundation.

Here at the Cardano Foundation we are transparent, inclusive, passionate and innovative. We aim to have a positive impact on global change and breed a harmonious working environment for our employees to flourish.

Benefits:

• Embrace Flexibility & Freedom:
  Enjoy the benefits of remote work with the flexibility to tailor your hours that best supports your productivity, while staying aligned with the team.
• Collaborative Culture:
  We foster a collaborative remote environment where ideas flow freely and everyone feels empowered to contribute.
• Thrive in a Learning Culture:
  We believe in continuous growth and development. Every employee receives an annual learning budget to invest in their professional journey.
• Shape Your Career:
  We provide opportunities for growth and encourage you to continuously evolve your skills and expertise within a supportive environment.
• Make a Real Impact:
  Your work will directly contribute to the development and adoption of Cardano, shaping the future of blockchain technology and its real-world applications.
• Team Building & Fun:
  Connect with your colleagues and strengthen team bonds through a dedicated annual team building event, as well as a departmental team-building day. Enjoy an extra day off for your birthday and additional days off to celebrate milestone work anniversaries.
• Work with Passionate People:
  Surround yourself with a team of dedicated individuals who are driven by a shared passion for blockchain technology and its potential to change the world.

Equal opportunities employer:

The Cardano Foundation strives to provide a diverse, inclusive and welcoming working environment. We are committed to being a discrimination free organization - including discrimination free space with regards to age, religion, race, nationality/ethnic origin, disability, sex, sexual orientation or gender identity.

Cardano Foundation does not accept any applications from recruitment agencies for this position. We refuse any responsibility for unsolicited applications as well as any associated fees. Unsolicited applications will be treated as direct applications regardless of the channel through which we receive them.

NewsWhip is the leading provider of predictive media intelligence, tracking and predicting engagement with the world's news stories each day.

Our platform is used each day by journalists at hundreds of top tier publications, and communications professionals at all 10 of the top 10 global PR agencies, dozens of international brands, and NGOs, international organisations and not-for-profits.

As an Irish company, our product and engineering functions are central to our business. This presents a great opportunity to directly input into what we build and how we build it. There is a direct link between your work, our customers and the continued success of NewsWhip.

As a Senior Backend Engineer on our Applications Team, you will be a key player in defining how this insight is delivered to customers. As an Applications Team member your remit will extend beyond just the ownership of delivery - you will be assisting in the research, refinement and execution of the features used to expose the value collated in our Data Platform to our customers in intuitive and novel ways.

Responsibilities:

• Develop features and improvements to NewsWhip products in a secure, well-tested, and performant way
• Collaborate with Product Management and other stakeholders within Engineering (Frontend, UX, etc.) to maintain a high bar for quality in a fast-paced, iterative environment
• Advocate for improvements to product quality, security, and performance
• Solve technical problems of moderate scope and complexity.
• Recognize impediments to our efficiency as a team ("technical debt"), propose and implement solutions

Requirements:

• 5+ years working in a Product Engineering team
• Experience collaborating with Product, Design and Frontend Engineering disciplines to deliver data-insight led features including activities relating to scoping, prototyping & research, identification of risks/uncertainties etc.
• Knowledge of software design principles and leading software development practices
• Willingness to get things done, learn new things, take initiative and challenge existing assumptions and conventions
• Experience with Java and/or Scala
• Experience building and deploying to any cloud service (GCP, AWS, Azure, etc.)
• Experience with building APIs for exposing rich datasets

Nice to have:

• Working with the Lightbend Reactive Platform of Scala, Akka or Play Framework
• Building an architecture to support rapid and stable product iteration cycles
• Significant development experience working on customer-facing and web-based systems
• Experience working in an agile environment with iterative development and fast feedback
• Working with storage systems such as Elasticsearch, Cassandra, Kafka and MySQL
• Experience with observability principals (Instrumentation, Tracing, Telemetry)
• Experience with IaC and DevOps methodologies
• Knowledge of basic Linux administration, Kubernetes and Google Cloud Platform

Benefits:

• Competitive salary
• Health insurance
• Pension
• Great working environment - remote first or hybrid model
• An opportunity to help define an entirely new industry category

Our ethos:

We believe in maintaining a friendly work environment, a healthy work-life balance, and compensating our employees fairly for their input. You'll be part of a team that believes in mutual support and education, and for a company where a work week isn't just the gap between weekends, but an opportunity to do work that is impactful and innovative.We also love eating and socializing together, annual and seasonal company and team retreats, healthy and unhealthy snacks and other perks.

We're looking for a Senior Backend Engineer (Python) to join the Canvas team.

In this role, you'll oversee the implementation of AI agent integrations using Python, helping customers automatically analyze and activate their data as this rapidly evolving technology reshapes our platform.

Your day-to-day work and responsibilities include…

• Build robust, scalable Python services that will integrate with AI agents and data processing workflows
• Lead architecture decisions and mentor other senior team members on Python best practices
• Planning new initiatives and features
• Collaborate with product managers, designers, and other stakeholders to define technical roadmaps, prioritize features, and estimate development efforts
• Implement and enforce high code quality standards through thorough code reviews, promoting best practices in software development, and ensuring maintainability and scalability.
• Mentor and guide team members, creating a culture of learning, collaboration, and continuous improvement. Provide technical guidance, conduct code reviews, and share knowledge to enhance the team's overall performance and skills
• Take the initiative to recognize and resolve possible system bottlenecks, enhance monitoring and alerting systems, and maintain performance and stability
• Utilizing existing monitoring tools to ensure system stability

Technologies you'll be working with:

• Python
• Google ADK
• FastAPI
• GCP
• Git
• OpenSearch
• Grafana
• Terraform

This position is for you if you have…

• 6+ years of back-end experience (Python) in a production environment, preferably building a SaaS product.
• Deep understanding of Python best practices, design patterns, and web frameworks (ideally FastAPI)
• Experience working with API integrations
• Ability to conduct unit testing, integration testing, and end-to-end testing
• Solid understanding of architecture & software design
• Comprehensive knowledge of the software testing field
• Understanding of security best practices
• Experience collaborating directly with product teams and designers
• Detail-oriented with advanced analytical and problem-solving abilities
• Effective communication skills and fluency in English
• Ability to give effective feedback

Nice to have.

• Experience with LLM integrations and Agentic AI frameworks
• Proficient use of AI tools

Benefits we offer…

• Competitive compensation package, including equity
• Great work equipment, and home office allowance for those working in our fully remote locations
• Health care benefit and leisure time insurance
• An annual 1000 euros of personal learning budget
• Sports and wellbeing allowance

Benefits may vary depending on location.

Hear why our team likes it here at

Join us on our mission to make data a marketing superpower

Supermetrics builds an end-to-end marketing intelligence platform, with 15% of global advertising spend reported through our products.

We help marketers turn their data into insights that improve business results and predict the best next step. Our technology streamlines marketing data for over 200,000 businesses through a network of agencies and customers like Shopify, HubSpot, and Nestlé. Since our founding in 2013, we've grown from a one-person shop to a key player in the industry—and we're just getting started

We're a team of 360+ growth-minded people from diverse backgrounds. Together, we make a multicultural, resourceful, and collaborative team.

Supermetrics operates on trust, transparency, and a keen customer focus. Forward-looking and action-oriented, we work hard to raise the bar in our industry. As team players, we help each other and win together.

We're hiring for a diverse, skilled, and collaborative team and building an inclusive workplace where everyone is treated fairly and respectfully.

It all started with a Google t-shirt. Read the rest of our growth story

Keelvar has an exciting opportunity to join our Engineering & Product Team as a Senior Backend Software Engineer. This role is remotely based in either Ireland or Germany.

Reporting to one of our Engineering Managers, you will be part of a critical group responsible for supporting and building new and existing features with a cross functional team. The successful candidate will join a group of engineers from different backgrounds including Software Dev, Data Science, UI and Product design.

Responsibilities

• Work in a cross functional development team analysing product feature requests and designing solutions.
• Build and maintain backend services with a strong focus on performance, maintainability, and production-readiness.
• Integrate AI capabilities into our products by deploying LLM services, orchestrating ML pipelines, and supporting end-to-end model lifecycle in production.
• Take a hands-on approach to shipping high-quality code incrementally — we value learning through iteration over aiming for perfection upfront.
• Participate in code reviews and architecture discussions to ensure technical excellence and knowledge sharing.
• Work closely with the Product team to shape features that are valuable, feasible, and grounded in users needs.
• Collaborate with colleagues across the organisation to ensure vision is delivered.
• Assist and mentor junior team members.

Your profile

• Strong proficiency and at least 5 years of experience in software development, ideally developing SaaS solutions.
• Experience in Python and its ecosystem, especially in the context of backend development and ML systems.
• Experience of working with CI/CD processes and in an agile, product led environment.
• Experience designing distributed services which can communicate in a fault-tolerant manner using both RESTful and event-driven APIs.
• Proven experience integrating LLMs into production services (e.g. OpenAI, Anthropic, Hugging Face, or custom fine-tuned models).
• Comfortable with DevOps practices, cloud environments (ideally AWS), and monitoring tools, you own your code in production.
• Product mindset: you think in terms of value to users, not just technical challenges, and you're willing to experiment to find what works.
• You are a deep thinker, you like to innovate, you like to solve problems creatively and quickly, and are passionate about technology and people.
• You thrive in an environment of mutual respect, openness and collaboration. You enjoy getting things done at a quick pace.

We are a diverse group and we intend to continue to attract and retain diverse talent in our organisation. We're committed to an inclusive and diverse Keelvar. We do not discriminate based on gender, ethnicity, sexual orientation, religion, civil or family status, age, disability, or race.