Developer Backend jobs in Belfast

ThriveIT Systems

Role: Java Backend Developer Location: Belfast Work Mode: Permanent JOB DESCRIPTION: * Technical Skills Required * Experience with Java NIO components like Channels Buffers and Selectors is expected * Expert knowledge of FIX protocol Market Connectivity and Low latency programming is a must * Very s

Ocho

€80,000 - €80,000 /year

Requirements Must have: - Degree in Computer Science, Software Engineering or related field - Experience in backend development using a high-level language such as Go or Java - Exposure to cloud platforms such as AWS, GCP or Azure - Experience working with data-intensive systems and distributed arch

Ocho

€80,000 - €80,000 /year

Backend Developer AWS | Belfast (Hybrid 3 Days) Location: Belfast Type: Full-time About the Opportunity: This is an opportunity to join a high-performing backend engineering team working on a modern cloud security platform. The environment is fast-paced and engineering-led, focused on solving comple

Ocho

€100,000 - €100,000 /year

Requirements Must have: - 10 years of professional software engineering experience, with 5 years focused on backend development. - Advanced proficiency in Go or Java with a deep understanding of distributed systems. - Hands-on experience with cloud infrastructure (ideally GCP) and containerised envi

Ocho

€100,000 - €100,000 /year

Senior Backend Engineer (Go / Java) - Exciting NEW Exclusive OchoX FDI - Remote first company Salary circa £100k+ bonus + benefits Please note candidates should reside in Northern Ireland to be eligible to apply. About the Company: Our client is a fast-growing SaaS organisation. Their AI powered tec

Location: Remote Employment Type: ContractWhat You'll Do Design and implement scalable backend systems to support real-time multiplayer featuresDevelop APIs and services that interact with game clients, databases, and third-party platformsOptimize server performance, latency, and data flow for mobil

Ocho People

Senior Backend Engineer (Go / Java) - Exciting NEW Exclusive OchoX FDI - Remote first companySalary circa £100k+ bonus + benefits Please note candidates should reside in Northern Ireland to be eligible to apply. About the CompanyOur client is a fast-growing SaaS organisation. Their AI powered techno

Ascendion

About the Role: We are hiring a Java Backend Developer to join a leading banking client in the UK. The role involves building and modernizing scalable backend systems, working on microservices architecture, and contributing to high-performance, secure financial applications. Key Responsibilities: De

Sherborne Talent Solutions

I am currently recruiting for multiple skilled Backend Developer's to join a growing and dynamic development team for my highly successful international client. These roles have come about due to continuous growth and expansion within a key area for my client, offering excellent opportunities to exp

IO Associates

Title: Senior Backend Engineer (Node, TypeScript, AWS) Salary: Up to £80,000 plus bonus Location: Fully Remote (UK) Are you a Senior Backend Developer who wants to own features end-to-end and build products used at scale? We're working with a fast-growing, product-led tech business looking for a Nod

Citi

Citi is seeking a talented server side engineer to join their Chief Technology Office in Belfast, UK. This role focuses on delivering high-quality code for internal tools that drive productivity across the organization. The ideal candidate will have strong skills in Kotlin or Java and experience wit

Initialize

Backend Python Developer (AI) - Remote - UK - excellent opportunity to join this innovative and fast-growing AI tech. organisation! Skills/experience 2+ years solid commercial Python coding experience (backend, API development). Good understanding of Docker and containerisation. An Agile mindset and

Upwind Security

DescriptionUpwind is a next-generation Cloud Security Platform that leverages runtime context to identify and prioritize critical risks, providing precise insights and efficient cloud security management. Unlike traditional tools, Upwind uses runtime data proactively for risk prioritization and post

Citibank (Switzerland) AG

Citibank (Switzerland) AG is seeking a Server Side Engineer in Belfast to join their CTO's Developer Enablement team. This role involves producing high-quality backend code and developing innovative tools for the bank's engineers. Candidates should have strong experience in Kotlin or Java, and profi

VANRATH

Senior Back-end TypeScript Engineer Remote anywhere where in Northern Ireland About your next employer: This innovative company is redefining cutting-edge digital solutions. As a small, passionate, and technology-driven organisation based in Northern Ireland, it collaborates with some of the world's

Empiric

Senior Backend Java Engineer We are looking for a hands-on Senior Backend Java Engineer with recent experience building, testing, and deploying production-grade APIs and microservices. This is a coding-first backend role. We want someone actively engineering in their current or most recent role, not

Citigroup Inc.

A global financial services firm in Belfast is seeking a server side engineer to join its Chief Technology Office. This role emphasizes driving solutions within projects like SDLC Automation and Release on Demand, enhancing productivity for 30k engineers. The ideal candidate will write quality code

Initialize

Backend Python Developer (AI) - Remote - UK - excellent opportunity to join this innovative and fast-growing AI tech. organisation! Skills/experience 2+ years solid commercial Python coding experience (backend, API development). Good understanding of Docker and containerisation. An Agile mindset and

Empiric

Java developer: Please ensure you read the below overview and requirements for this employment opportunity completely. We are looking for expert developers to join one of our most exciting and important projects. You will be joining a large team to help shape the landscape of the United Kingdom, wor

Ocho

Backend Software Engineer | Go, Java, AWS | Belfast (Hybrid) Location: Belfast (3 Days Hybrid) Type: Permanent About the Opportunity: This role sits within a high-performing backend engineering team building cloud-native systems that process large volumes of data in real time. The environment is fas