10 of 10 Senior Java Software Engineer Jobs in Belfast

Java Engineer – Cloud (GCP or AWS) | Scalable Systems | Product Environment Are you a Java engineer who thrives on building scalable, cloud-native systems? Want to make a tangible impact on modern product development in a fast-moving team? My client is looking … for a Java Engineer with strong experience in either Google Cloud Platform (GCP) or Amazon Web Services (AWS) to join their high-performing engineering team. You’ll be developing robust, distributed systems and contributing to cloud infrastructure in a product-focused environment. Key Responsibilities: Design, develop … and resilience of services. Take ownership of cloud infrastructure components using GCP or AWS services. Essential Skills and Experience: Strong commercial experience with Java (Java 11 or newer) . Hands-on experience with GCP or AWS , including services such as Cloud Run, Pub/Sub, BigQuery More ❯

Java Engineer – Cloud (GCP or AWS) | Scalable Systems | Product Environment Are you a Java engineer who thrives on building scalable, cloud-native systems? Want to make a tangible impact on modern product development in a fast-moving team? My client is looking … for a Java Engineer with strong experience in either Google Cloud Platform (GCP) or Amazon Web Services (AWS) to join their high-performing engineering team. You’ll be developing robust, distributed systems and contributing to cloud infrastructure in a product-focused environment. Key Responsibilities: Design, develop … and resilience of services. Take ownership of cloud infrastructure components using GCP or AWS services. Essential Skills and Experience: Strong commercial experience with Java (Java 11 or newer) . Hands-on experience with GCP or AWS , including services such as Cloud Run, Pub/Sub, BigQuery More ❯

Senior Java Developer - £75k | FinTech | remote | Java, React, AWS, TypeScript G.Digital have exclusively partnered with a growing FinTech who are looking for a Senior Java Engineer. 🔧 What You’ll Do: Design, develop, and maintain high-performance Java applications … applications Mentor junior developers and provide technical leadership Advocate for clean, scalable, and maintainable code ✅ What you will need: 5+ years of professional Java development experience Experience working with TypeScript to help with frontend bottlenecks Strong understanding of Spring/Spring Boot, REST APIs, and microservices architecture Solid … plus Excellent problem-solving skills and a team-first mindset 💡 Bonus Points For: Experience with Python 🚀 Package up to £75k remote working bonus Senior Java Developer - £75k | FinTech | remote | Java, React, AWS, TypeScript More ❯

Senior Software Engineer – Java - FinTech Remote First | London (UK) | Up to £120k + Benefits Are you a Java developer who thrives in a collaborative, test-driven environment? Do you believe in pair programming, continuous integration, and clean, maintainable code? If … so, we’d love to hear from you. Our FinTech client could be the ideal role for you.... Skills: Commercial Java experience - ideally in a fintech, performance environment Strength with Core Java Strong understanding of TDD Clear communication and teamwork Extreme Programming (XP) principles, with a … key. We value growth and flexibility, welcoming developers from all backgrounds. What You’ll Be Doing Building resilient and adaptable fintech platforms in Java Refactoring to improve code design Writing comprehensive tests for every commit Automating processes to improve efficiency Rotating across teams to enhance collaboration More ❯

Senior Java Engineer – Core Java, Algo, Distributed Systems Location: Belfast – 2/3 days per week needs to be possible (only considering candidates in NI) Type: Contract Industry: Investment Banking Duration: ASAP – long term (12 months to start with extensions) We’re … seeking Senior/Lead Java Engineers to join a team building high-performance systems that support trading across Equity Swaps, Delta One, and Prime Brokerage. While low-latency expertise is not essential, a deep command of Core Java and algorithmic/data structure proficiency … architecture , and contribute to distributed system designs. Lead database migrations from legacy systems (e.g., Sybase , DB2 ) to modern platforms. Required Skills: Strong Core Java expertise, with a focus on performance tuning and optimisation . Solid understanding of algorithms , data structures , and concurrent distributed environments . Proven experience with More ❯

Senior Java Engineer – Core Java, Algo, Distributed Systems Location: Belfast – 2/3 days per week needs to be possible (only considering candidates in NI) Type: Contract Industry: Investment Banking Duration: ASAP – long term (12 months to start with extensions) We’re … seeking Senior/Lead Java Engineers to join a team building high-performance systems that support trading across Equity Swaps, Delta One, and Prime Brokerage. While low-latency expertise is not essential, a deep command of Core Java and algorithmic/data structure proficiency … architecture , and contribute to distributed system designs. Lead database migrations from legacy systems (e.g., Sybase , DB2 ) to modern platforms. Required Skills: Strong Core Java expertise, with a focus on performance tuning and optimisation . Solid understanding of algorithms , data structures , and concurrent distributed environments . Proven experience with More ❯

Senior Backend Software Engineer Up to £70,000 + 15% Bonus + Stock Options Join a fast-growing tech company that's reimagining how modern marketplaces are built. We're looking for a hands-on Senior Backend Engineer to help … problems. Help shape engineering practices and mentor junior developers. Collaborate with a remote-first, high-performing team across time zones. Tech Stack: Kotlin, Java (or other JVM), Spring Boot, GCP, Kubernetes, Docker, Kafka, PostgreSQL, MongoDB, CI/CD pipelines. Experience in Go, Python, or C# also welcomed. What More ❯

Senior Backend Software Engineer Up to £70,000 + 15% Bonus + Stock Options Join a fast-growing tech company that's reimagining how modern marketplaces are built. We're looking for a hands-on Senior Backend Engineer to help … problems. Help shape engineering practices and mentor junior developers. Collaborate with a remote-first, high-performing team across time zones. Tech Stack: Kotlin, Java (or other JVM), Spring Boot, GCP, Kubernetes, Docker, Kafka, PostgreSQL, MongoDB, CI/CD pipelines. Experience in Go, Python, or C# also welcomed. What More ❯

The Software Engineer role leads and participates in solving business problems by building robust, high-performance large-scale enterprise applications. You will leverage your deep technical knowledge to design and code scalable and easily maintainable solutions as well as mentor other more junior engineers as needed. … You will promote a culture of technical excellence and continuous improvements within the team. Responsibilities Develop and engineer solutions within multiple agile software delivery teams, working to collaboratively deliver sprint goals, write code, and participate in the broader Citi technical community and team-level Agile and … Scrum processes. Engage in the full software development lifecycle (SDLC), including planning, development, testing, and deployment ensuring adherence to best practices in CI/CD pipelines Foster relationships with end users and stakeholders and influence product design evolution and delivery strategies Required Qualifications Experience as a Software More ❯

Lorien are currently engaged with a leading SaaS provider within their sector who are currently looking for a Senior Java Developer to join their team as they continue growth of their existing team. You will play a important role in designing, building, extending and support their … technical leadership, mentor colleagues and actively contribute to improvement initiatives and making the most out of modern technologies and innovative solutions. Technical Skills: Java Spring Boot Kubernetes AWS - Lambda, EC2, S3, RDS, DynamoDB) Demonstratable knowledge of DevOps culture, processes, technical practices and tools (IaC - Terraform) Experience with React More ❯