Backend Developer Jobs in Northern Ireland, United Kingdom

Backend Development team builds the core systems behind BJAK's AI Neobank app, delivering reliable APIs and financial product infrastructure at scale. The role designs and implements backend services for onboarding, payments, cards, transfers, KYC and risk flows, ensures system reliability, security and observability, and collaborates with product, frontend, mobile and AI teams to launch features quickly.

Principal Backend Engineer leading Java architecture for global financial platforms. Drives secure, scalable microservices on AWS, mentors teams, champions engineering excellence, and shapes enterprise strategy.

Senior Backend Developer at ISC leads design of scalable backend systems using Domain-Driven Design, CQRS, and Clean Architecture. Drives technical direction, mentors developers, and sets engineering standards.

We are seeking a Backend Software Developer to join a growing technology team focused on delivering innovative digital solutions that enhance operational efficiency and user experiences. The successful candidate will be responsible for designing, developing and supporting scalable, cloud-based applications, with a strong focus on backend development, APIs and Azure technologies.

Kota seeks a Senior Product Engineer (Backend) to design and build APIs and SDKs for embedded insurance and retirement benefits. The role involves system architecture, incident response, and enhancing developer experiences.

Kota seeks a Senior Product Engineer (Backend) to design and build APIs and SDKs for embedded insurance and retirement benefits. The role involves collaborating with cross-functional teams to create scalable, secure, and developer-friendly products.

Sonatus AI + Cloud Engineering team drives AI‑enabled software‑defined vehicle platforms. The Manager leads a backend pod that designs high‑throughput Go microservices, builds resilient ingestion pipelines, and orchestrates remote fleet command.

Backend Engineer

Senior Backend Engineer at Gong.io, part of the Engineering team building the Gong Revenue AI Operating System. The role focuses on designing and scaling high‑performance Java microservices that power AI‑driven revenue insights.

Product Team at Chase Bank builds secure, scalable Java applications that empower senior bank leaders and integrate AI features into collaboration tools. The Software Engineer designs and develops internal applications, APIs and data visualizations while working in an agile environment with CI/CD practices.

At DraftKings, a publicly traded (NASDAQ: DKNG) regulated gaming company headquartered in Boston, the Software Engineering Manager, Backend will lead engineering teams driving high-impact product initiatives across a dynamic, fast-paced environment. Day-to-day, you will define technical strategy, scale architecture, mentor engineering managers and senior ICs, own hiring strategy, and collaborate with Product, Design, and Business stakeholders to align engineering efforts with company goals.

Telnyx is seeking a Senior Backend Engineer to join its WebRTC squad and build, operate, and evolve the backend services behind its real-time communications and Voice SDK platform. Day-to-day work includes designing, maintaining, and scaling services for authentication, token management, push notifications, proxying, RTC DNS, and diagnostic logging, while improving reliability, observability, and architecture.

Senior Backend Engineer leads design and build of Java microservices, delivers AWS cloud solutions, builds CI/CD pipelines, writes comprehensive tests, and collaborates in agile teams.

Seasoned Java backend engineer with expertise in designing secure, scalable solutions for liquidity risk technology. Experienced in system design, development, testing, and operational stability within large corporate environments.

A mid‑level Java backend engineer who designs, develops, and troubleshoots secure, scalable software for JPMorgan’s reference data platform. The role involves full SDLC participation, agile practices, and collaboration across systems to deliver high‑quality code in a corporate environment.

As a Lead Software Engineer within JPMorgan Chase's Employee Platforms organization in Dublin, Ireland, you will be a core technical contributor on an agile team building and delivering trusted, market-leading technology products. Day-to-day, you will design, develop, and troubleshoot backend microservices for the Mobile Appstore and Mobile Kit teams, support and provision mobile development teams across the company, and drive adoption of enterprise-authorized AI-assisted engineering practices.

AI and Cloud Engineering team at Sonatus builds AI‑enabled software‑defined vehicle platforms. The Senior Lead Database Engineer designs, implements and optimises high‑performance SQL and NoSQL database solutions for time‑series, OLAP and OLTP workloads, collaborating with data engineering, analytics and product teams.

Lead Software Engineer (Backend, AWS) at JPMorgan Chase in Dublin, Ireland, within Workforce Experience Technology. You will shape the future of talent management technology by designing, developing, and supporting secure, scalable AWS infrastructure and applications for HR Talent Management.

We are seeking a Java Backend Lead Software Engineer to join JPMorgan Chase’s Corporate Sector Credit Risk team in Glasgow. In this role, you will lead the design, development, and delivery of secure, scalable technology solutions that support our credit risk operations.

Bjak AI Backend Team builds the inference and orchestration layer that powers AI interactions for billions of users. The role designs and operates high‑throughput, low‑latency services, handling monitoring, alerting, and incident response to ensure reliable AI‑powered features.