Top Software Engineer Jobs in Belfast

Develop and enhance features for EnrollWise, contribute to a scalable software architecture, review code, collaborate on design and technical feasibility, and maintain software quality.

Design, implement, and maintain scalable server-side microservices for audio/video communication using Java and TypeScript. Lead CI/CD (Jenkins), collaborate with product and engineering teams, troubleshoot production issues, perform RCA/post-mortems, mentor developers, and drive architecture and reliability for WebRTC-based media backend services.

Design, develop, and maintain scalable web applications using .NET backend and Angular/React frontend. Collaborate on requirements, implement RESTful APIs, optimize performance, debug, maintain documentation, support end-users, and work within CI/CD and DevOps workflows.

Design, develop, customize and integrate Microsoft Dynamics 365 CRM/CE solutions. Build entities, forms, workflows, plugins, reports and dashboards using CRM SDK, C#, JavaScript, ASP.NET and SQL. Troubleshoot issues, estimate implementation approaches, collaborate with stakeholders, document solutions, and mentor junior developers. Banking domain experience preferred.

Build and maintain a mission-critical .NET enterprise platform and event-driven microservices. Implement Kafka-based integrations and CDC pipelines, write and tune SQL Server/T-SQL, containerize and deploy with Docker/Kubernetes, use Azure and CI/CD pipelines, diagnose production issues end-to-end, participate in Agile ceremonies, and collaborate with product, QA, DevOps and partners while supporting on-call rotations.

Build and maintain a mission-critical .NET enterprise platform and event-driven microservices. Develop features, integrations using Kafka, tune SQL Server, containerize with Docker/Kubernetes, deploy via GitHub Actions, work with Azure, participate in Agile ceremonies, perform on-call triage and collaborate across product, QA, DevOps and partner teams.

Build and maintain backend-first features and integrations for Triptease's marketing channels. Work across the full stack (primarily backend), design scalable distributed systems, implement CI/CD on cloud platforms, collaborate closely with product teams, pair program, write tests (TDD), and contribute to squad strategy and product quality.

Design and develop scalable, secure frontend web applications for connected embedded systems. Lead frontend architecture, collaborate with backend/embedded teams, implement device provisioning, telemetry visualization, and remote management UIs. Optimize performance, accessibility, and maintainability; mentor engineers, participate in reviews, and drive frontend best practices.

The Senior Staff Software Engineer will lead the architecture of the agentic platform, define shared service designs, partner with teams for reusable capabilities, provide technical leadership, and implement cost-management and evaluation pipelines.

As a Staff Software Engineer, you will develop backend services for the agentic platform, integrating AI capabilities and ensuring system reliability, security, and developer usability.

We are seeking a software engineer to build and validate resilient distributed systems, enhance CI pipelines, and improve testing strategies for cloud applications.

The Backend Software Engineer will develop and maintain backend systems for data processing related to coffee farming, utilizing Python and PostgreSQL. Responsibilities include feature development, problem-solving, and adapting systems to regulatory changes while ensuring system resilience.

Build, operate, and evolve the Midnight Indexer in Rust: ingest and process blockchain data, design schemas for PostgreSQL/SQLite, implement a high-performance GraphQL API with real-time subscriptions, ensure reliability through testing and observability, and collaborate across node, ledger, wallet, and security teams.

Develop and maintain full-stack web applications using C#, .NET (including .NET 8), Blazor and Angular 15. Build APIs, integrate databases (MySQL, SQL Server, MongoDB), write tests, perform code reviews, optimize queries, document systems, and collaborate in Agile teams to deliver high-quality solutions.

Lead deployment, configuration, and optimisation of i2 intelligence platforms. Design solutions, integrate systems, tune performance, gather requirements, deliver client-facing implementations, and provide training and knowledge transfer.

Design, build, and maintain components of the LNIP intelligence core platform, including a semantic search API and internal data curation tool. Implement secure coding standards, unit testing, code reviews, and use agentic development tools responsibly to accelerate development while ensuring quality.

Lead architecture and design of complex embedded software systems for SoC-based products. Drive technical strategy, performance optimization, hardware-software integration, and CI/CD practices. Provide technical leadership across teams, mentor engineers, influence cross-functional decisions, and collaborate with business units to align solutions with market needs.

Develop and maintain core components for a low-latency trading engine at Kraken, focusing on messaging solutions and system optimization.

Embed with product engineering squads to own production reliability for Grafana Cloud databases (Mimir, Loki, Tempo, Pyroscope). Design and implement SLOs, automation, and fault-tolerant patterns; lead incident response and post-incident reviews; improve observability, alerting, and scalability for high-SLA multi-tenant environments; mentor engineers and influence product design for operability.

Lead re-architecture and modernization of a legacy C++ execution kernel, diagnose and resolve memory/concurrency/performance issues in production, drive technical direction, mentor peers, and collaborate across teams to evolve the platform toward a more open, service-oriented design.

As a Senior Software Engineer, you'll develop high-quality software solutions, mentor junior members, apply best practices in design and build, and contribute to technical decisions in a collaborative environment.

Drive technical direction and deliver complex multi-month software projects. Translate ambiguous product needs into technical plans, lead design reviews, mentor engineers, collaborate with cross-functional teams and vendors, ensure quality and operational readiness, produce design docs, and support roadmap and backlog feasibility for digital products.

Design, develop, and maintain secure, scalable backend services and mobile SDKs for payment device integrations. Lead architecture, improve CI/CD and testing, mentor engineers, ensure security and compliance (PCI/OWASP), investigate performance issues, participate in on-call rotation after onboarding, and collaborate cross-functionally to deliver reliable payment solutions.

Design and implement high-performance backend services (Elixir/Phoenix), operate and evolve the managed cloud platform on Kubernetes/AWS, build declarative infrastructure with IaC and GitOps, improve observability and reliability, and collaborate remotely with periodic in-person meetings to support document processing workflows at scale.

Develop and maintain NedGraphics cloud products (OptiNedLink), build serverless AWS backends, design secure REST APIs and event-driven workflows, implement automated testing, optimize performance and scalability, enforce security best practices, integrate third-party APIs and ERP/PLM systems, and produce developer documentation and API specifications.