429 C Developer jobs in Ireland
Android Developer

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We're Fiserv, a global leader in Fintech and payments, and we move money and information in a way that moves the world. We connect financial institutions, corporations, merchants, and consumers to one another millions of times a day - quickly, reliably, and securely. Any time you swipe your credit card, pay through a mobile app, or withdraw money from the bank, we're involved. If you want to make an impact on a global scale, come make a difference at Fiserv.
**Job Title**
Android Developer
**Android Developer - Payment Applications**
Fiserv is a global provider of financial services technology that enables money movement for thousands of financial institutions and millions of people and businesses - for a world that never powers down. Holding 40 years of fintech and payments leadership, it provides the systems, channels and platforms to move money and information in a way that moves the world. In Fiserv - Nenagh, we are building the next generation of commerce infrastructure, services and analytics to support continued growth of our business.
We're not here to follow change - we're here to lead it. With a client-first mindset and relentless focus on quality, we see bold opportunities ahead that will move the industry forward.
**About the Role**
We are looking for an experienced Android Developer to join our high-performing, collaborative team. In this role, you will design and build next-generation mobile payment applications using Kotlin and Android, ensuring seamless, secure, and user-friendly payment experiences. Working within a multidisciplinary team of developers, architects, product owners, and DevOps engineers, you will play a key role in delivering innovative solutions in a dynamic and fast-paced environment.
**Primary Objectives**
_This Android Developer role will, in collaboration with a multidisciplinary delivery team, design and develop Smart-Mobile applications based on defined requirements._
+ Design, develop, and deliver Android applications that power best-in-class payment experiences.
+ Collaborate with an agile delivery team, contributing to solution architecture, design, and technical specifications.
+ Write high-quality, maintainable, and testable code, including unit tests, regression tests, and system integration tests.
+ Troubleshoot complex issues across a wide range of devices, solutions and environments.
+ Implement monitoring and logging solutions to ensure enterprise-grade performance and reliability.
+ Contribute to estimation efforts at a T-shirt sizing level using your expertise in the relevant areas.
+ Share knowledge, mentor team members, and foster a culture of collaboration and continuous improvement.
+ Work closely with stakeholders across the business to translate needs into robust technical solutions.
**Knowledge & Skills**
+ 4+ years of experience designing and developing Android applications.
+ Bachelor's degree in a relevant discipline such as computer science, business informatics or mathematics. Comparable education or professional experience also considered.
+ Strong expertise in Kotlin, Java, and Android SDK.
+ Previous experience in the payments industry (e.g., Nexo Standards, EMVCo, , PCI/PTS compliance).
+ Familiarity with popular third-party libraries for Android development.
+ Up-to-date knowledge of the latest Android development trends and best practices.
+ Hands-on experience with CI/CD pipelines, Git/GitHub, Maven, Eclipse and tools such as Jira and Confluence.
+ Solid understanding of UI design, Figma design conversions, performance optimization, and adaptability across different screen sizes.
+ Excellent communication and interpersonal skills, with the ability to collaborate across teams and explain technical solutions clearly.
+ Strong problem-solving abilities, organizational skills, and a proactive, ownership-driven mindset.
**Nice to have:**
+ Expertise in Android - understanding of the platform, experience with Android ROM is a plus.
+ Knowledge of server-side technologies, REST APIs, SOA, and database design.
+ Familiarity with RxJava, functional programming, MVP/MVC design patterns, Android NDK, React Native, or JavaScript.
+ Experience with Android Bound Services and Android Open-Source Project.
+ Comfortable writing robust unit tests, including edge cases, usability, and reliability.
+ Experience with distributed computing environments.
Thank you for considering employment with Fiserv. Please:
+ Apply using your legal name
+ Complete the step-by-step profile and attach your resume (either is acceptable, both are preferable).
**Our commitment to Diversity and Inclusion:**
Fiserv is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, national origin, gender, gender identity, sexual orientation, age, disability, protected veteran status, or any other category protected by law.
**Note to agencies:**
Fiserv does not accept resume submissions from agencies outside of existing agreements. Please do not send resumes to Fiserv associates. Fiserv is not responsible for any fees associated with unsolicited resume submissions.
**Warning about fake job posts:**
Please be aware of fraudulent job postings that are not affiliated with Fiserv. Fraudulent job postings may be used by cyber criminals to target your personally identifiable information and/or to steal money or financial information. Any communications from a Fiserv representative will come from a legitimate Fiserv email address.
Software Developer

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At IBM, work is more than a job - it's a calling: To build. To design. To code. To consult. To think along with clients and sell. To make markets. To invent. To collaborate. Not just to do something better, but to attempt things you've never thought possible. Are you ready to lead in this new era of technology and solve some of the world's most challenging problems? If so, lets talk.
IBM FileNet Content Manager is an enterprise content management (ECM) platform that provides tools for organizations to manage, store, and process large volumes of unstructured content like documents, images, and videos.
We're looking for an innovative, experienced Software Developer who's passionate about building solutions, supporting customers, and constantly learning and exploring new skills.
In this role, you will be part of a team developing the next generation of AI-infused features for our products.
You will work in a dynamic environment closely, collaborating with Architects, other developers, and Offering Managers across our global organization.
**Your role and responsibilities**
* As a Software Developer, you will work with the latest tools and technologies to deliver cutting-edge software solutions.
* You will design and develop complex new features while enhancing existing product capabilities.
* In addition to hands-on development, you will contribute to project planning, tracking, and execution.
* Your role will span the full software engineering lifecycle - from R&D, design, and architecture to development, testing, and supporting our growing customer base.
* With your expertise in Java and web technologies, you will drive product improvements and enhance customer experience.
* You will be a self-starter with strong communication skills, capable of working independently, multitasking, and prioritizing effectively in a dynamic environment.
**Required technical and professional expertise**
* 3+ years of experience as a Software Developer with hands-on expertise in designing, developing, and delivering software solutions
* Programming & Frameworks: Java, JavaEE, Python, SOAP/.NET, Dojo, JavaScript, HTML, ReactJS
* Application Servers & Middleware: tWAS, WebLogic, Liberty
* Databases: DB2, MS SQL, Oracle, PostgreSQL
* Authentication & Security: LDAP, OIDC/OAuth/SSO
* DevOps & Tools: Ansible, Jenkins, GitHub, Artifactory, InstallAnywhere, Eclipse
* Platforms & Containers: Linux, Windows, Docker, Kubernetes, YAML
* Generative AI knowledge including LLM, embedding models, and vector databases.
**Preferred technical and professional experience**
* Continuous Integration: Strong working knowledge of Jenkins, HTTP, JSON, and XML
* Security: Experience in identifying and addressing security vulnerabilities
* Cloud Platforms: Exposure to AWS EKS, Azure AKS, and Google GKE
* Knowledge/Experience in Agentic AI and Model Context Protocol (MCP) architecture
* Frontend skills: client-side web application experience, including familiarity with Java, HTML, CSS, JavaScript, React, REST APIs, and Python.
* Communication: Excellent verbal and written communication skills for effective collaboration with team members, stakeholders, and clients
* Adaptability: Quick learner with the ability to embrace new technologies, adapt to changing requirements, and thrive in dynamic environments
* Teamwork: Collaborative mindset with the ability to contribute ideas, support team objectives, and work effectively within a team
IBM is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, caste, genetics, pregnancy, disability, neurodivergence, age, veteran status, or other characteristics. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.
Backend Developer

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A career in IBM Software means you'll be part of a team that transforms our customer's challenges into 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**
As a key member of our dynamic team, you will play a vital role in crafting exceptional software experiences. Your responsibilities will encompass the design and implementation of innovative features, fine-tuning and sustaining existing code for optimal performance, and guaranteeing top-notch quality through rigorous testing and debugging. Collaboration is at the heart of what we do, and you'll be working closely with fellow developers, designers, and product managers to ensure our software aligns seamlessly with user expectations.
Primary Job Responsibilities:
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Work on open source (1) Apache KIE projects /Drools, Kogito/ in community
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Participate in design discussions
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Promote solutions that foster positive end user experience
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Develop mechanisms that provide as seamless an experience on OpenShift/Kubernetes as possible
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Provide feature tests and further our continuous integration efforts
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Create examples and quickstarts demonstrating how features can be used
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Support the Quality Assurance and Documentation teams
References
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1. technical and professional expertise**
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Ability to learn quickly and solve issues as they arise
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Ability to work within a distributed team and communicate effectively
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Advanced level experience with cloud technologies like Docker/Podman, Kubernetes, OpenShift, or alternatives
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Average Level Experience with Java or Go language programming, shell scripting, and GIT tools
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Experience with the development of enterprise production applications
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Experience contributing to existing open source projects
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Good English communication skills, both written and verbal
**Preferred technical and professional experience**
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Experience with Open source community projects
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Experience with Quarkus
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User experience with any (1) Apache KIE projects
Experience with Scrum/Kanban agile methodologies
References
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1. is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, caste, genetics, pregnancy, disability, neurodivergence, age, veteran status, or other characteristics. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.
zCX Developer

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Are you interested in developing operating systems and contributing to Open Source? Did you just graduate and are eager to become part of an worldwide development community? Is your favorite OS Linux based and you enjoy low-level programming? If so, our team is the right place for you! We are expanding our IBM development team in Waterford. The team is responsible for enhancing the Linux kernel for IBM Z / IBM LinuxOne. This includes device drivers, new processor instructions, virtualization (KVM), confidential containers, and test automation/devops (CI/CD).
**Your role and responsibilities**
As a key member of our team, you will play a vital role in crafting exceptional software experiences. Your responsibilities will include the design and specifications for new features, implementation of the design, identifying and bug fixing, performance analysis, submitting your code to upstream open source community repositories, and solving client problems. This position requires working onsite 3 days per week.
**Required technical and professional expertise**
* Minimum of 3 years professional experience working in containerized environments, e.g. based on Kubernetes or OpenShift.
* This includes low-level software development, as well as a solid understanding of container orchestration, deployment topologies, as well as virtualization techniques.
* Experience in source code repository systems (e.g. git), scripting languages (e.g. Python) and test Automation (e.g. Jenkins)
* Extensive experience with one of the following Python or GOLang.
* Extensive experience in AI and Machine Learning (Knowledge of LLMS and opens source versions like llama)
**Preferred technical and professional experience**
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Any previous contributions to Open Source projects Skills in current I/O technologies (e.g. PCI, NVMe, RDMA) would be ideal
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Experience in Z Architecture (S390X) and compilers would be a significant advantage
IBM is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, caste, genetics, pregnancy, disability, neurodivergence, age, veteran status, or other characteristics. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.
Firmware Developer

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Are you interested in developing operating systems and contributing to Open Source? Did you just graduate and are eager to become part of an worldwide development community? Is your favorite OS Linux based and you enjoy low-level programming? If so, our team is the right place for you! We are expanding our IBM development team in Waterford. The team is responsible for enhancing the Linux kernel for IBM Z / IBM LinuxOne. This includes device drivers, new processor instructions, virtualization (KVM), confidential containers, and test automation/devops (CI/CD).
**Your role and responsibilities**
As a key member of our team, you will play a vital role in crafting exceptional software experiences. Your responsibilities will include the design and specifications for new features, implementation of the design, identifying and bug fixing, performance analysis, submitting your code to upstream open source community repositories, and solving client problems. This position requires working onsite 3 days per week.
**Required technical and professional expertise**
* Demonstrated Professional experience and understanding of operating systems internals (e.g. memory management & task scheduling, interrupts, device drivers) .
* Experience in source code repository systems (e.g. git), scripting languages (e.g. Python), and in developing automation for CI/CD pipelines.
* Experience in packaging and management of software components.
* Minimum of 3 years professional experience working on low-level software development
* Extensive experience with one of the following C/C++ or Assembly.
**Preferred technical and professional experience**
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Any previous contributions to Open Source projects Skills in current I/O technologies (e.g. PCI, NVMe, RDMA) would be ideal
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Any skills in IBM Z architecture ("Principles of Operations"), Z assembler and I/O concepts would be a bonus
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Experience in Cryptography would be a significant advantage
IBM is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, caste, genetics, pregnancy, disability, neurodivergence, age, veteran status, or other characteristics. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.
Software Developer

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QRadar SOAR, is designed to help security teams respond to cyberthreats with confidence, automate with intelligence and collaborate with consistency. It guides teams in resolving incidents by codifying established incident response processes into dynamic playbooks. The open and agnostic platform helps accelerate and orchestrate their response by automating actions with intelligence and integrating with other security tools. teams can have best-in-class response capabilities. We are growing rapidly and are looking for a highly motivated, dynamic, talented individual to join our Software Development team.
**Your role and responsibilities**
As a member of the IBM Security SOAR development team, you will be working on back-end services and end-to-end system design. Members of this team tend to have a high degree of fluency in one or more languages (Java and/or C++), database technologies (relational, document, distributed), and a foundational knowledge of cloud technologies such as Kubernetes and OpenShift Container Platform
**Required technical and professional expertise**
You must have a minimum of 3 years experience in the following:
* Professional experience programming in Java.
* Good understanding of Object-Oriented Design and programming concepts.
* Professional experience in web application programming and REST architecture.
* Strong communication skills.
**Preferred technical and professional experience**
* Experience with Tomcat, Jersey, Hibernate, JTA, Camel, and ActiveMQ.
* Experience in database schema design, performance, tuning, and scalability.
* Implementing distributed applications in container environment (Docker/Kubernetes).
* Experience with agile software development, continuous integration and continuous
IBM is committed to creating a diverse environment and is proud to be an equal-opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, caste, genetics, pregnancy, disability, neurodivergence, age, veteran status, or other characteristics. IBM is also committed to compliance with all fair employment practices regarding citizenship and immigration status.
Sales Developer
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Wordpress Developer
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Scala Developer
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iOS Developer
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