848 Back End Developer jobs in Ireland

About the Role

The role involves writing and reviewing code, deploying systems that support the business, and engaging in an agile software development process. You will collaborate closely with various stakeholders to deliver high-quality solutions.

Responsibilities

• Write and review code, and deploy systems that support the business
• Participate in application design and architecture reviews
• Engage in an agile, iterative software development process
• Collaborate closely with business, product and engineering stakeholders
• Break down complex problems into simple, creative, and effective solutions
• Build solutions for high availability, observability, and maintainability
• Provide support for the platform

Qualifications

• 4-7 years of software engineering experience
• Bachelor's degree or higher in a technical field (Engineering/Mathematics/Computer Science)

Required Skills

• Knowledge of an object-oriented programming language (Python or Java) with a proven track record of delivering high-quality data applications
• Experience designing, delivering, and securing data-rich web applications in relevant web programming frameworks (e.g. React).
• Familiarity with databases and data pipelines
• Strong communication skills for interacting with stakeholders
• Ability to think strategically and act tactically with exceptional attention to detail
• Demonstrated curiosity, analytical skills, and resourcefulness with a proven record of ownership and the ability to deliver results in a fast-paced and dynamic environment

Preferred Skills

• Experience with additional programming languages and frameworks
• Knowledge of cloud services and deployment strategies

Job Title:
Back End Developer

Location:
Dublin Office weekly 3 days onsite work

Type of hiring:
Contract

Eligibility:
Stamp4 (min 8 months Validity) OR Irish OR European

Note:
Experience should be 9+ yrs

A Backend Developer with finance and cards experience will design, develop, and maintain the server-side logic, databases, and APIs for financial applications, focusing on secure and efficient data management. This role requires strong programming skills, particularly in languages like Java or , and experience with financial technologies and card processing systems.

Responsibilities:

System Design and Development:

· Design, develop, and maintain robust and scalable backend systems for financial applications, including core application logic, databases, and APIs.

Data Management:

· Manage and optimize data storage and retrieval using both SQL and NoSQL databases, ensuring data integrity and security.

API Development:

· Build and maintain RESTful APIs and microservices, ensuring they are well-documented, secure, and performant.

Financial Systems Integration:

· Integrate with various financial systems, including payment gateways, card processors, and banking APIs.

Security and Compliance:

· Implement security best practices, ensuring compliance with financial regulations and data protection standards.

Performance Optimization:

· Monitor and optimize the performance of backend systems, ensuring high availability and responsiveness.

Testing and Quality Assurance:

· Write unit and integration tests, participate in code reviews, and ensure code quality.

Collaboration and Communication:

· Work closely with front-end developers, product managers, and other stakeholders to deliver high-quality solutions.

Staying Updated:

· Continuously learn and adapt to new technologies and trends in backend development and the financial industry.

Qualifications:

· Programming Languages: Strong proficiency in Java, Python, or is often required.

· Databases: Experience with both relational (SQL) and NoSQL databases is highly desirable.

· API Development: Proven experience in designing and developing RESTful APIs and microservices.

· Financial Systems: Knowledge of financial technologies, card processing systems, and relevant regulations.

· Cloud Technologies: Familiarity with cloud platforms like AWS, Azure, or Google Cloud is often a plus.

· Security: Strong understanding of security best practices and experience with secure coding.

· Problem Solving: Excellent problem-solving and analytical skills.

· Communication: Strong communication and collaboration skills.

Senior Back-End Developer – AI/Generative AI Applications

Dublin - Onsite

Overview

We are currently working with a global technology-driven firm exploring the frontiers of artificial intelligence and generative AI. The team's mission is to increase awareness and adoption of the latest AI tools across internal groups, while delivering high-impact applications that drive innovation and efficiency.

They are seeking a Senior Back-End Developer with a strong foundation in building production-grade systems and a genuine curiosity about AI/GenAI. You don't need to be a deep ML researcher, just someone eager to learn, experiment, and apply new technologies in meaningful ways.

This is a hands-on role with direct influence over technical decisions, architecture, and tool adoption, working alongside experienced engineers in a highly collaborative environment.

Key Responsibilities:

• Design and build scalable back-end systems, services, and data pipelines for AI-driven applications.
• Integrate LLM APIs (e.g., OpenAI, Azure, Gemini, Claude) and leverage frameworks like LangChain, LlamaIndex, MCP.
• Apply concepts such as RAG, vector databases, embeddings, and inference optimization to production workflows.
• Implement robust practices in DevOps, CI/CD, Docker/Kubernetes, automated testing, and debugging.
• Collaborate with peers on technical strategy, prototyping, and evaluation of GenAI tools.
• Stay at the forefront of AI adoption, contributing to awareness and best practices across the wider engineering community.

What We're Looking For:

Required Experience

• 8+ years of experience building production-grade applications with Python or .NET/C#.
• Strong proficiency with SQL/NoSQL databases and data integration.
• Solid knowledge of OOP, CI/CD pipelines, containerization, automated testing, and debugging.
• Familiarity with LLM APIs (OpenAI, Azure, Gemini, Claude) and frameworks (LangChain, LlamaIndex, MCP).
• Understanding of prompt engineering techniques (prompt chaining, chain-of-thought, multi-shot).
• Experience with developer productivity tools (GitHub Copilot, Cursor AI, Windsurf).

Preferred (Not Required)

• Experience with .NET development (C#).
• Exposure to open-source AI platforms (Hugging Face, Ollama).
• Basic understanding of AI/ML Ops, model hosting, prompt tuning, and GenAI evaluation.
• Experience with cloud platforms (Azure, GCP, AWS).
• Frontend development skills for web or desktop UI/UX.
• Knowledge of secure authentication (SSO, LDAP) and data handling best practices.
• Background in finance or willingness to learn the basics.
• General awareness of traditional AI, ML, NLP, and neural networks.

Qualifications

• Bachelor's degree in Computer Science, Engineering, or a related field.
• Training or certification in Generative AI is a plus but not required.

The Role

We're seeking an experienced Backend Software Engineer with strong application development experience and a passion for engineering excellence. This role is perfect for a very experienced developer who wants to drive technical standards, implement best practices, and help shape the architecture of a product that solves real problems for users globally.

As we continue adding customers and scaling our platform, you'll play a crucial role in building robust, maintainable systems that can handle growing data volumes and traffic. You'll champion modern development practices, mentor other team members, and help evolve our technical architecture to support our ambitious growth plans.

What makes this role special: You'll have the opportunity to influence our entire technical direction while working on challenging problems in financial data processing, real-time analytics, and large-scale integrations.

What We're Looking For

Core Engineering Excellence

• At least 3 years of backend software development experience building production applications
• Strong understanding of object-oriented programming principles (SOLID principles, design patterns)
• Experience with modern development practices: automated testing, code reviews, CI/CD pipelines
• Expertise in database design and optimisation: schema design, performance tuning, query optimization
• Knowledge of scalable architecture patterns and building systems that grow with business needs
• Understanding of technical debt and when refactoring is the right investment

Technical Foundation

While our current stack is primarily PHP, we welcome strong backend engineers from any modern language background, including:

• Java, C#/.NET, Python, Go, or similar - we value strong engineering fundamentals over specific syntax
• Experience with enterprise frameworks and dependency injection patterns
• SQL expertise and relational database experience (MySQL, PostgreSQL, SQL Server, etc.)
• Understanding of RESTful API design and web services integration
• Cloud platform experience (AWS preferred, but Azure/GCP experience translates well)

Integration & Data Experience

• Required:
• Experience with third-party API integrations, including OAuth authentication
• Comfortable working with various data formats: JSON, XML, CSV
• Knowledge of data pipeline design and ETL processes
• Bonus:
• Experience with Parquet or other modern columnar data formats
• Experience with columnar databases (ClickHouse, Firebolt, RedShift) or data warehousing

Systems & Infrastructure

• Required:
• Linux systems experience, including server setup and configuration
• Basic security practices and system hardening knowledge
• Cloud infrastructure experience (we use AWS, but other cloud experience is valuable)
• Bonus:
• Experience with Docker, Infrastructure as Code, monitoring and observability
• Experience with GraphQL

Our Current Tech Stack

• Backend: PHP, Python
• Data Layer: Amazon Aurora (MySQL), Firebolt (columnar database), Redis
• Frontend: React, TanStack Router, Zustand, shadcn/ui
• Infrastructure: AWS (EC2, ECS, S3, RDS, S3, Elasticache & various other services)
• Tools: Git, Docker, Redis, Python for data processing

Note: We're open to evolving our stack with the right technical input

What You'll Do

• Build new functionality and scale existing systems to handle growing customer demand
• Drive engineering best practices across the team, from testing strategies to code architecture
• Optimize database performance and design schemas that scale with our data growth
• Integrate with third-party systems from major brands, handling complex data flows
• Collaborate closely with our Operations team to understand customer needs
• Champion code quality through reviews, documentation, and knowledge sharing

Working at Ezora

Remote-First Culture: As a distributed team, we value self-motivation, clear communication, and the ability to deliver high-quality work independently.

Technical Growth: You'll have the opportunity to influence our technology choices, architect new systems, and solve challenging problems at scale.

Business Impact: Your work directly affects how major global brands manage their finances - the software you build makes a real difference.

Growth-Stage Opportunity: Join us at a stage where you can truly shape both the product and the company culture.

What We Offer

• Competitive salary and equity participation
• Flexible remote working (Ireland/UK based)
• Professional development and conference attendance
• Modern equipment and home office setup support
• Collaborative culture that values technical excellence
• Direct impact on product direction and company growth
• Annual Offsites company sponsored 5 star team event in foreign destination

Application Process

Ready to help us build the future of financial analytics?

1. Fill out the application form on Hire Locker - link
2. Expect a follow up email, and potentially a short phone call
3. Technical test - approx 1 hour head scratcher with real world problems, not leetcode
4. Follow up interview with the team you'll be joining

Note: We are not looking for any contractors, external development agencies or recruiters.

Introduction
A career in IBM Software means you'll be part of a team that transforms our customer's challenges in solutions.

Seeking new possibilities and always staying curious, we are a team dedicated to creating the world's leading AI-powered, cloud-native software solutions for our customers. Our renowned legacy creates endless global opportunities for our IBMers, so the door is always open for those who want to grow their career.

We are seeking a skilled back-end developer to join our IBM Software team. As part of our team, you will be responsible for developing and maintaining high-quality software products, working with a variety of technologies and programming languages. IBM's product and technology landscape includes Research, Software, and Infrastructure. Entering this domain positions you at the heart of IBM, where growth and innovation thrive.

Your Role And Responsibilities

• The Camel Quarkus team is an integral part of IBM's runtime portfolio, focused on building and evolving Apache Camel on the Quarkus runtime, a lightweight, cloud-native integration solution.

• As a Senior Backend Developer on this team; you will design, develop, and optimize features that enhance Camel's performance, scalability, and native execution on modern cloud platforms.

• As a member of the Camel Quarkus team, you will contribute to enhancing and maintaining 100+ Camel extensions, ensuring they are optimized for Quarkus and ready for production use in a variety of enterprise scenarios.
• You will contribute to upstream development, collaborate with the Apache Camel and Quarkus communities, and participate in architectural discussions to ensure alignment with product and technical goals.
• You'll also work closely with teams across QE, documentation, product management, and support to deliver high-quality, enterprise-ready features. This role offers opportunities to engage with the broader open-source ecosystem and contribute to shaping the future of cloud-native integration.

Required Technical And Professional Expertise

• Advanced Java proficiency:

Extensive hands-on experience with Java development, with strong expertise in modern Java (Java 11+). Familiarity with Java 17 and its advanced features is a strong plus.

• Enterprise Integration:

Strong understanding of messaging systems, transactional workflows, and Enterprise Integration Patterns.

Experience with Apache Camel or similar frameworks.

• Cloud-Native Fundamentals:

Experience with containerized development (Docker, Kubernetes).

Understanding of cloud-native runtimes; exposure to native compilation is a plus.

• Build & CI/CD Tooling:

Proficiency in Maven or Gradle.

Familiarity with modern CI/CD pipelines.

• Testing & Debugging:

Solid foundation in test-driven development, integration testing, and debugging distributed applications.

Preferred Technical And Professional Experience

• Exposure to Quarkus or similar modern microservice frameworks.
• Contributions to open source projects.
• Experience delivering technical presentations, writing blogs, or engaging in developer communities.
• Familiarity with Red Hat Middleware products.

A Backend Developer with finance and cards experience will design, develop, and maintain the server-side logic, databases, and APIs for financial applications, focusing on secure and efficient data management. This role requires strong programming skills, particularly in languages like Java or , and experience with financial technologies and card processing systems.

Responsibilities:

System Design and Development:

· Design, develop, and maintain robust and scalable backend systems for financial applications, including core application logic, databases, and APIs.

Data Management:

· Manage and optimize data storage and retrieval using both SQL and NoSQL databases, ensuring data integrity and security.

API Development:

· Build and maintain RESTful APIs and microservices, ensuring they are well-documented, secure, and performant.

Financial Systems Integration:

· Integrate with various financial systems, including payment gateways, card processors, and banking APIs.

Security and Compliance:

· Implement security best practices, ensuring compliance with financial regulations and data protection standards.

Performance Optimization:

· Monitor and optimize the performance of backend systems, ensuring high availability and responsiveness.

Testing and Quality Assurance:

· Write unit and integration tests, participate in code reviews, and ensure code quality.

Collaboration and Communication:

· Work closely with front-end developers, product managers, and other stakeholders to deliver high-quality solutions.

Staying Updated:

· Continuously learn and adapt to new technologies and trends in backend development and the financial industry.

Qualifications:

· Programming Languages: Strong proficiency in Java, Python, or is often required.

· Databases: Experience with both relational (SQL) and NoSQL databases is highly desirable.

· API Development: Proven experience in designing and developing RESTful APIs and microservices.

· Financial Systems: Knowledge of financial technologies, card processing systems, and relevant regulations.

· Cloud Technologies: Familiarity with cloud platforms like AWS, Azure, or Google Cloud is often a plus.

· Security: Strong understanding of security best practices and experience with secure coding.

· Problem Solving: Excellent problem-solving and analytical skills.

· Communication: Strong communication and collaboration skills.

· Programming Languages: Strong proficiency in Java, Python, or is often required.

· Databases: Experience with both relational (SQL) and NoSQL databases is highly desirable.

· API Development: Proven experience in designing and developing RESTful APIs and microservices.

· Financial Systems: Knowledge of financial technologies, card processing systems, and relevant regulations.

· Cloud Technologies: Familiarity with cloud platforms like AWS, Azure, or Google Cloud is often a plus.

· Security: Strong understanding of security best practices and experience with secure coding.

· Problem Solving: Excellent problem-solving and analytical skills.

· Communication: Strong communication and collaboration skills.

Adroit People is hiring

Role: Back End Developer

Location: Dublin, Ireland(3 days onsite is mandatory)

6 months contract with possible Extension

A Backend Developer with finance and cards experience will design, develop, and maintain the server-side logic, databases, and APIs for financial applications, focusing on secure and efficient data management. This role requires strong programming skills, particularly in languages like Java or , and experience with financial technologies and card processing systems.

Responsibilities:

System Design and Development:

· Design, develop, and maintain robust and scalable backend systems for financial applications, including core application logic, databases, and APIs.

Data Management:

· Manage and optimize data storage and retrieval using both SQL and NoSQL databases, ensuring data integrity and security.

API Development:

· Build and maintain RESTful APIs and microservices, ensuring they are well-documented, secure, and performant.

Financial Systems Integration:

· Integrate with various financial systems, including payment gateways, card processors, and banking APIs.

Security and Compliance:

· Implement security best practices, ensuring compliance with financial regulations and data protection standards.

Performance Optimization:

· Monitor and optimize the performance of backend systems, ensuring high availability and responsiveness.

Testing and Quality Assurance:

· Write unit and integration tests, participate in code reviews, and ensure code quality.

Collaboration and Communication:

· Work closely with front-end developers, product managers, and other stakeholders to deliver high-quality solutions.

Staying Updated:

· Continuously learn and adapt to new technologies and trends in backend development and the financial industry.

Qualifications:

· Programming Languages: Strong proficiency in Java, Python, or is often required.

· Databases: Experience with both relational (SQL) and NoSQL databases is highly desirable.

· API Development: Proven experience in designing and developing RESTful APIs and microservices.

· Financial Systems: Knowledge of financial technologies, card processing systems, and relevant regulations.

· Cloud Technologies: Familiarity with cloud platforms like AWS, Azure, or Google Cloud is often a plus.

· Security: Strong understanding of security best practices and experience with secure coding.

· Problem Solving: Excellent problem-solving and analytical skills.

· Communication: Strong communication and collaboration skills

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

Qualifications
:

• 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

Required Skills
:

• 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

Pay range and compensation package
:

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

Equal Opportunity Statement
:

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.