76 to 100 of 130 Java Jobs in Belfast

deliver quality, business critical software.● Support operation of services in production. ****Core Competencies:**** ● 2+ years of systems programming experience in Rust, C, C++, Go, Java or a comparable language with enthusiasm to write production Rust (we will help you ramp up with dedicated mentorship!). ● Understanding of data structures ...

Citi is hiring a Senior Java Developer to join the Risk Data Team. You will architect and implement robust microservices using Java/J2EE, Spring Boot, and RESTful services while optimizing SQL and CI/CD pipelines. You will lead a team of developers, promote clean code, and help advance ...

development team. The successful candidate will work alongside experienced developers to build, test, and maintain web applications using React on the frontend and Java on the backend. This role is ideal for someone looking to develop their software engineering skills in a collaborative environment. Responsibilities Utilize knowledge of applications development … escalating, managing and reporting control issues with transparency. Role Responsibilities Develop and maintain user interfaces using React.js. Build and support backend services using Java and related frameworks. Write clean, maintainable, and well-documented code. Participate in code reviews and team discussions. Debug and resolve application issues. Collaborate with designers, developers ...

drive the improvement Work alongside Site Reliability Engineers and cross-functional teams to diagnose/troubleshoot any production performance related issues Work in Java, Golang, and Python. Systems built on Docker, Kubernetes, MongoDB, ELK, TimescaleDB, GCP Stackdriver, GCS, Cloud Composer, AI Platform About You A desire to build products that … solve complex technical problems for end users 7+ years experience developing highly scalable, distributed applications, products and services in Java and Golang Designing/developing REST, GRPC and GraphQL APIs Working knowledge of SQL and No-SQL database technologies Solid foundation in data structures, algorithms and software design with strong ...

lead the design and delivery of enterprise-scale digital platforms across cloud, data, and AI ecosystems. The role combines deep technical expertise in Java, Microservices, Angular/React, Snowflake, Databricks, Cloud Technologies, and AI-enabled solutions with strong leadership, architecture, and stakeholder management capabilities. The successful candidate will drive modernization … partner with business and technology leaders to deliver scalable, secure, and data-driven solutions. Key ResponsibilitiesLead architecture, design, and delivery of enterprise applications using Java, Spring Boot, Microservices, Angular/React, and Cloud-native technologies. Define technology strategy and roadmap for application modernization, AI adoption, and platform engineering. Design ...

development team. The successful candidate will work alongside experienced developers to build, test, and maintain web applications using React on the frontend and Java on the backend. This role is ideal for someone looking to develop their software engineering skills in a collaborative environment. Responsibilities: Utilize knowledge of applications development … practices, and escalating, managing and reporting control issues with transparency. Role ResponsibilitiesDevelop and maintain user interfaces using React.js. Build and support backend services using Java and related frameworks. Write clean, maintainable, and well-documented code. Participate in code reviews and team discussions. Debug and resolve application issues. Collaborate with designers ...

Dianaduggan is seeking a Full Stack Developer (Java/Python/Go) in Belfast for a leading global financial institution. The candidate will play a critical role in transforming technology in a hybrid multi-cloud environment, primarily leveraging AWS and Google Cloud. Key responsibilities include designing and maintaining scalable applications ...

Role: Java Developer Type: PERM/FTE Location: Belfast, Northern Ireland Working Model: Hybrid VISA SPONSORSHIP is also Available Core Responsibilities: Develop: Architect and maintain robust Java-based microservices leveraging Spring and SpringBoot frameworks. Lead: Guide development efforts, mentor junior developers, and ensure code quality, security, and performance. Collaborate: Partner … with cross-functional and DevOps teams to automate deployments and deliver high-quality solutions. Key Skills Required: Mandatory: Java, Spring, SpringBoot, and SpringMVC. Experience: 5-7 years working with Java microservices, cloud platforms, and containerization technologies. Let me know if you are interested and we can have a confidential chat. ...

identified as a major growth target for Citi – with technology providing the key to unlock this potential. Key Responsibilities Delivery of Swap Processing components (Java/Kotlin) within the Strategic Swaps Platform Developer-led automated testing with a focus on Test Driven Development Working within an Agile team focussed … consulting/project management techniques/methods Ability to work under pressure and manage deadlines or unexpected changes in expectations or requirements Technical Experience Java & Test-Driven Development are essential. Experience in any number of additional technologies (listed below) is advantageous Kotlin Cloud Technologies (Kubernetes, Open Shift) Messaging Technologies (Kafka ...

team builds and operates software What You Bring to the Team Proven software engineering experience with a level of seniority Proficiency in Java, Go, and Python Strong debugging and problem-solving skills — comfortable tracing issues through complex, distributed systems Experience with (or strong aptitude for) large-scale microservice architectures Comfortable ...

latency market data functionality and work closely with floor traders, production support and other teams to diagnose real-world issues. The role emphasizes Java development, microservices, scripting, and a strong understanding of network protocols. #J-18808-Ljbffr ...

cybersecurity product line, applying advanced machine learning to detect anomalies and drive real-time decisions. The role requires a strong background in Java, distributional statistics, unsupervised methods, and experience with feature computation on columnar stores. You’ll collaborate with a cross-functional team and grow our data-driven solutions. #J ...

Citibank (Switzerland) AG in Belfast is seeking an experienced Java software engineer to join Citi Tech, delivering scalable microservices for global finance. You will design and implement backend systems using Java/J2EE, Spring Boot, and RESTful services; lead and mentor teammates; contribute to CI/CD, testing, and cloud ...

## QA Automation Engineer - Java/SQL (AVP)Apply: Hybrid: Belfast United Kingdom: Full time: Posted Today: 26997916**Overview**Citi is a world-leading global bank. We have approximately 200 million customer accounts and a presence in more than 160 countries and jurisdictions worldwide. We provide consumers, corporations, governments … employ strong communication skills, ensure a first-class service of quality to our internal clients. The ideal candidate should have a strong background in Java and SQL, with proven experience in developing and maintaining automated test scripts through the use of practices such as BDD.**Key Responsibilities:*** Implement and work ...

employ strong communication skills, ensure a first‐class service of quality to our internal clients. The ideal candidate should have a strong background in Java and SQL, with proven experience in developing and maintaining automated test scripts through the use of practices such as BDD. Key Responsibilities Implement and work ...

Aflac Northern Ireland is seeking a Java Engineer to help scale AI-enabled services in a serverless, cloud-first environment. You will develop Java APIs, AWS Lambda functions and microservices that power customer experiences and core business capabilities. You will work in an Agile team, applying TDD and CI/ ...

Securities is seeking a Java Engineer to join the Compliance & Supervision Technology team. The role focuses on building regulatory compliant, scalable solutions across Global Markets with a strong emphasis on security and resiliency. You will collaborate with Compliance, Risk, Data, and Business stakeholders to deliver enterprise-grade, auditable systems using … Java, Spring Boot, and cloud-native patterns. The role requires agile delivery and cross-time zone collaboration. #J-18808-Ljbffr ...

Citi in Belfast is seeking a Senior Java Developer to deliver end-to-end development for our custody technology. The role requires design and implementation of event-driven systems, collaborating with stakeholders and delivering high-quality code in a hybrid work setting. You will work on modern Java with ...

Senior Low Latency Java Engineer - Equities Electronic- Execution (eTrading) Engineer the future of global finance. At Citi, our Tech teamdoesn’tjust support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countriesoperatingat a scale few can match. From deploying … grasp complex concepts in a multicultural, cross-regional environment. Knowledge of regional exchange microstructure and regulatory regimes. Bonus points for: Coupled with extensive Java expertise, added programing skills and experience in C++or Rust would be considered advantageous. Priorexperience developingelectronictrading platformsin a global financial institution or equivalent environment. This job description ...

Senior Software Engineer Belfast (hybrid) TypeScript, Java or Python | Salary flexible depending on experience Enjoy solving complex problems, picking up new technologies and taking ownership of your work? MCS Group is partnering with an established international technology consultancy growing its engineering team in Belfast. This is an opportunity to join … project uses TypeScript and Node.js, so experience with these technologies would be a strong advantage. However, we're also keen to speak with experienced Java or Python engineers who can demonstrate an ability to learn quickly and deliver in unfamiliar environments. Perhaps you've moved between languages, taken ownership ...

Frontend Quality Assurance Specialist At a Glance Individual contributor QA role at a high-growth prediction markets trading firm Core stack: Java, Python, FIX, SQL, Cucumber, Playwright, JUnit Competitive base salary plus discretionary annual bonus 3+ years experience required, financial services testing background preferred Central role in quality … role, ideally within financial services Experience with testing tools such as Cucumber, Playwright and JUnit, with familiarity in test reporting and analysis Proficiency in Java, Python, FIX and SQL Excellent communication, interpersonal and presentation skills, able to explain complex concepts to non‐technical stakeholders Ability to work independently and collaboratively ...

Citi is seeking an experienced software engineer in Belfast to architect and lead regulatory reporting pipelines using Java and Spring Boot. You will guide a team, onboard new regulations, and implement AI-driven automation while ensuring scalable, reliable data processing across big data stacks. The role emphasizes real-time streaming ...

partnering with an established international technology consultancy growing its Belfast engineering team. The initial project uses TypeScript and Node.js, with opportunities to work with Java or Python engineers who can learn quickly and deliver in new environments. You’ll contribute to complex production systems for enterprise clients, stay hands ...

development, collaboration with stakeholders, and strong engineering judgment. You will contribute to design and system architectures in a delivery-focused environment, applying Java and React skills in a mixed/virtual team across locations, with a hybrid working model. Strong CI/CD experience and financial services exposure are valued. ...

latency. The role also offers the opportunity to learn the Equity Trading business. Key Skills and Experience required: Significant years of working knowledge of Java OR C++Working experience of Microservices architecture is a big plus. Knowledge and experience in building ultra-low latency market data platform will ...