26 to 50 of 130 Java Jobs in Belfast

Senior Software Engineer – GenAI, Cloud & Hybrid

Location
Belfast City District, Northern Ireland, United Kingdom
Citibank (Switzerland) AG in Belfast is seeking a Senior Software Engineer (Java or Python) to co-create and evolve financial software platforms. You will work on full-stack development, applying Spring Boot/Spring Core, Flask/FastAPI, and modern JavaScript frameworks to deliver scalable cloud-native applications. You will ...

Senior Software Developer

Location
Belfast, Northern Ireland, United Kingdom
/CD pipelines Qualifications BSc Degree (2.1 or higher) or equivalent in Computer Science or related discipline Networking, and programming (preferably C++ or Java) Git source control Linux Effective communication – both written and verbal Strong team working and problem solving skills Flexible ‘can do’ attitude 4+ years industry experience ...

Senior QA Engineer

Location
Belfast, Northern Ireland, United Kingdom
Competences**Essential* Extensive experience in QA automation within Agile environments.* Strong automation experience using tools such as Selenium, Cypress, Playwright, or TestComplete.* Proficiency in Java, JavaScript, or similar programming/scripting languages.* Proven ability to design and maintain scalable automation frameworks (Playwright/WebDriverIO preferred).* Experience integrating automation within ...

Full Stack Developer - Vice President

Location
Belfast City District, Northern Ireland, United Kingdom
Oversee production support processes, collaborating with operations and business stakeholders. Analyze issue patterns to drive improvements. Guide documentation efforts. Key Skills and Experience required: Java & Test-Driven Development are essential. React Front End Development Extensive experience system analysis and in programming of software applications Experience in managing and implementing successful ...

Senior Software Engineer (Back-End)

Location
Belfast City District, Northern Ireland, United Kingdom
Experience within financial services/trading platforms and understanding of financial markets. Knowledge of the FIX protocol and experience managing FIX connectivity. Exposure to Java and/or JavaScript. Deeper expertise in AWS services, including serverless architectures and microservices. Experience with TDD, BDD, or similar engineering practices for defining ...

Senior Software Engineer (Back-End)

Location
Belfast, Northern Ireland, United Kingdom
Experience within financial services/trading platforms and understanding of financial markets.* Knowledge of the FIX protocol and experience managing FIX connectivity.* Exposure to Java and/or JavaScript.* Deeper expertise in AWS services, including serverless architectures and microservices.* Experience with TDD, BDD, or similar engineering practices for defining ...

Data Engineer (Trade Surveillance)

Location
Belfast City District, Northern Ireland, United Kingdom
Solid understanding of CI/CD pipelines, ideally with a background in software engineering, product management or data analytics. Strong proficiency in Python or Java, SQL, and data pipeline frameworks (e.g., Airflow, dbt, Spark), with solid experience with the AWS ecosystem. Excellent problem-solving skills and ability to work ...

Software Java Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
## Software Java EngineerApply: Hybrid: Belfast, United Kingdom: Full time: Posted Today: R\\_1509440**Work Location**:Belfast, United Kingdom**Hours:**35**Line of Business:**Technology Solutions**Pay Details:**We’re committed to providing fair and equitable compensation to all our colleagues. As a candidate, we encourage you to have … with a member of our HR Team and ask compensation related questions, including pay details for this role.**Job Description:**We are seeking a Java Engineer to join Compliance & Supervision Technology in TD Securities. The role builds technology solutions that meet regulatory obligations, strengthen supervisory controls, and manage conduct ...

Senior Software Engineer: AI-Driven Finance, Hybrid

Location
Belfast City District, Northern Ireland, United Kingdom
Citi is recruiting a Senior Software Engineer (Java or Python) to help shape tech for global finance. You will work on full‐stack development, leveraging Spring Boot, Flask/FastAPI, and modern JS frameworks. Expect cloud-native design, Gen‐AI concepts, and involvement across architecture, infrastructure, and AI integration. Hybrid ...

Java Agile Developer | CI/CD, TDD, FinTech Platform

Location
Belfast City District, Northern Ireland, United Kingdom
Citi is seeking an engineering professional to lead the delivery of Swap Processing components in a Strategic Swaps Platform. You will contribute to a collaborative, Agile environment, focusing on automated testing and scalable software design. ...

Java & Serverless API Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
responsibly. Team Context At Aflac Northern Ireland, our engineering teams build services that support policyholder experiences and core business capability. This team focuses on Java Spring Boot and AWS Lambda serverless solutions. As technology changes, the team continues to explore practical uses of AI, event-driven design and intelligent automation. … will bring curiosity, engineering discipline and a willingness to learn. Role Context We are looking for a Java Engineer who is interested in serverless architecture, modern platforms and AI-enabled products. You will work as part of an Agile team building APIs, microservices and customer-focused features. You will work ...

Software Java Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
dialogue with a member of our HR Team and ask compensation related questions, including pay details for this role.Job Description:We are seeking a Java Engineer to join Compliance & Supervision Technology in TD Securities. The role builds technology solutions that meet regulatory obligations, strengthen supervisory controls, and manage conduct … auditability, traceability, entitlement controls, evidencing capabilities, and monitoring into system designs.Support internal audits, regulatory reviews, remediation programs, and control assessments.Required Skills:Strong hands-on Java development experience, JDK 17+ preferred.Rest/GraphQL APIs using Spring Boot or any similar.Strong SQL experience with any RDBMS.Working experience with messaging technologies like Kafka ...

Full Stack Developer (Java / Python / Go)

Location
Belfast, Northern Ireland, United Kingdom
Full Stack Developer (Java/Python/Go) Belfast Contract Our client is seeking a Full Stack Developer (Java/Python/Go) to join a leading global Tier 1 financial institution undergoing a major transformation of its technology landscape. You will support with evolving an application and data hosting … Google Cloud. In this role, you will design, build, and operate resilient, scalable, and secure applications and services. Role : Full Stack Developer (Java/Python/Go) Contract duration : 12 months initially (with scope to extend) Location : Belfast – 3 days onsite, 2 days working from home Key Responsibilities: Design, develop ...

Senior Kotlin Engineer - AWS Cloud & Microservices (Remote)

Location
Belfast City District, Northern Ireland, United Kingdom
Version 1 in Belfast is seeking an experienced software developer to contribute to government projects using Kotlin and Java on AWS. You will work in a Scrum team in a modern Agile environment, building maintainable solutions for our customers. The role involves Frontend (TypeScript/Node.js) and Backend (Kotlin/ ...

QA Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
will have: Extensive experience in QA automation within Agile environments Strong hands-on experience with Playwright, Selenium, Cypress or WebDriverIO Strong programming experience in Java, JavaScript or TypeScript Experience designing and maintaining scalable automation frameworks Strong API, functional and end-to-end testing experience Experience integrating automated testing into ...

Product Engineer - Cloud Security (Multiple Levels) (Hybrid)

Location
Belfast City District, Northern Ireland, United Kingdom
approaches.* Demonstrated interest in continuously improving cloud security controls through learning, experimentation, and collaboration.* Proficiency in one or more modern programming languages (e.g., Python, Java, JavaScript), with the ability to write, review, and maintain production‐quality code. **Supervisory Responsibilities*** This job does not have supervisory duties. **Posting Closing date: Monday ...

Senior Software Engineer (Java Or Python) - VP

Location
Belfast City District, Northern Ireland, United Kingdom
## Senior Software Engineer (Java Or Python) - VPApplylocations: Belfast United Kingdomtime type: Full timeposted on: Posted Todayjob requisition id: 26969354**Senior Software Engineer (Java Or Python)**Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every … reporting control issues with transparency.**Key Skills and Experience required****Additional Job Description*** Experience in full‐stack application development with strong expertise in **Java or Python*** Deep experience with backend frameworks such as **Spring Boot/Spring Core** and **Flask/FastAPI*** Solid frontend experience with **modern JavaScript frameworks** (React ...

Senior Software Engineer (Java Or Python) - VP

Location
Belfast City District, Northern Ireland, United Kingdom
Senior Software Engineer (Java Or Python) Engineer the future of global finance. At Citi, our Tech team doesn’t just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From … business practices, and escalating, managing and reporting control issues with transparency Additional Job Description Experience in full‐stack application development with strong expertise in Java or Python Deep experience with backend frameworks such as Spring Boot/Spring Core and Flask/FastAPI Solid frontend experience with modern JavaScript frameworks ...

Data Engineer DV Cleared

Hiring Organisation
Datatech
Location
Belfast, United Kingdom
Employment Type
Permanent
workloads at scale - Integrate multiple sources into modern cloud platforms - Collaborate across engineering and delivery on mission-critical programmes **The environment** Python, SQL, Spark, Java or Scala · AWS, Azure or GCP · modern distributed and cloud-native architectures **What we need** - Active DV clearance - essential - Production-scale pipeline experience - Strong engineering ...

Senior Developer - Equity Derivatives Tech (VP)

Location
Belfast City District, Northern Ireland, United Kingdom
multi-threading and parallel task programming. Proven experience in ensuring robust testing quality practice and maintaining clean CI/CD pipelines. Experience working in Java/Kotlin, Kafka, ELK. Experience leveraging safely AI coding agents such as Devin, Copilot, Claude Code. Preferred Qualifications: Understanding of trade booking and life cycle ...

Senior Low-Latency Java Engineer for Global Trading

Location
Belfast City District, Northern Ireland, United Kingdom
Citi's Equities Technology organization is seeking a Senior Software Engineer to join the Equities Electronic-Execution (Electronic Trading) team. The role involves the design, development and delivery of Citi's next-generation low-latency ...

Data Ops Engineer: Trade Surveillance Pipelines

Location
Belfast City District, Northern Ireland, United Kingdom
data. You will ensure data completeness, quality, and timely delivery while collaborating with engineers, analysts and compliance teams. The role requires strong Python/Java, SQL and AWS experience, familiarity with Airflow, dbt and Spark, and a practical understanding of CI/CD and Agile delivery in a fast-paced ...

DV-Cleared Data Engineer: Live-Systems Cloud Pipelines

Location
Belfast City District, Northern Ireland, United Kingdom
data platforms and production-grade pipelines in secure cloud environments for critical national-scale systems. You will work with Python, SQL, APIs, Spark or Java/Scala in AWS, Azure or GCP, delivering scalable ingestion, processing and serving layers while collaborating with engineering and delivery teams on mission-critical #J ...

Python Developer

Location
Belfast City District, Northern Ireland, United Kingdom
office, Credit Risk Business. The candidate will be a core member of the technology team responsible implementing projects based on Python,FastAPI, MCP, LLM, Java and using latest technologies. Excellent opportunity to immerse in and learn within the Wholesale Credit Risk Division and gain exposure to business and technology initiatives ...

Staff Software Engineer

Location
Belfast City District, Northern Ireland, United Kingdom
matter more than familiarity with any specific tool. However for context, here's the Managed Content team's current tech stack: Backend/API: Java, Frontend/BFFE: React, Node js, TypeScript, Express Platform, CI/CD: AWS, Terraform, EKS, Docker, GitHub Actions Observability and support tooling:Datadog, Logz.io, PagerDuty ...