14 of 14 API Design Jobs in Northern Ireland

Consultant, Senior Consultant, Automation Test Engineer, Government and Public Sector

Location
Belfast City District, Northern Ireland, United Kingdom
real world. You’ll be trusted to make technical decisions, explore and implement new tools, and influence how our teams engineer quality from design through to production. You might find yourself: Designing, developing and maintaining production-quality software, test infrastructure and reusable engineering tools for APIs, microservices and front … applications. Applying software engineering principles such as modular design, clean code, design patterns, code review and appropriate automated testing. Designing scalable automation frameworks and libraries that improve testability, developer feedback and delivery speed. Embedding automated quality checks in CI/CD pipelines using tools such as Azure DevOps ...

Manager, Automation Test Engineer, Engineering, Government and Public Sector

Location
Belfast City District, Northern Ireland, United Kingdom
across our Government and Public Sector. If you already hold active UK SC clearance or are eligible (5+ years UK residency) and want to design, build, and test solutions that make an impact across the nation, we’d love to meet you. Connect to your career at Deloitte Deloitte … real world. You’ll be trusted to make technical decisions, explore and implement new tools, and influence how our teams engineer quality from design through to production. You might find yourself: Designing, developing and maintaining production-quality software, test infrastructure and reusable engineering tools for APIs, microservices and front ...

Director Data & Analytics API Experience - Data Services

Hiring Organisation
CME- Group
Location
Belfast, UK
Employment Type
Full-time
Director Data & Analytics API Experience - Data ServicesBackground: CME Group runs some of the world's largest and most important trading venues, including derivatives exchanges, FX/FI platforms. The trading participants include leading investment banks, hedge funds, proprietary trading firms, investment managers, and retail traders, as well as additional … stakeholders such as independent software vendors (ISVs) and data redistributors. To support our unique data and analytics products, we are now building a unified API-first distribution framework, simplifying consumption and value extraction. The Role: We are seeking a key stakeholder for the CMEG External Data-Analytics (DA) APIs ...

Senior Software Engineer, Reference Data Platform (Python/Oracle) - AVP

Location
Belfast City District, Northern Ireland, United Kingdom
Senior Programmer Analyst (C12/AVP) to join our Master Reference Data (MRD) technology organization. In this role, you will be responsible for the design, development, testing and implementation of the Operating Model & Aritifical Intelligence (OMAI) Fusion application - a critical enterprise platform responsible for centralizing, mastering and distributing high … performance data processing pipelines, optimize complex database architectures and deliver resilient software solutions that support mission-critical enterprise operations. Key Responsibilities Application & Pipeline Development: Design, code, test and implement robust backend services, ETL data pipelines and batch/real-time processing components for the Fusion platform using Python. Database ...

Senior Software Engineer (Belfast, UK)

Location
Belfast City District, Northern Ireland, United Kingdom
5+ years Java; Java 17+/21, Spring Boot or equivalent Stream/event-driven services at volume (Redis Streams, Kafka or similar) REST API design and ownership, contract-first Containerised services on Azure or another major cloud; Docker, CI/CD Strong SQL Desired Criteria: ClickHouse … OLAP store from the application side PostgreSQL with JSONB; in-process caching with invalidation Security telemetry: Windows event logs, Active Directory, M365/Graph API, NetFlow Insider threat/UEBA/SIEM product experience Porting or re-platforming an existing system against a live reference implementation Comfortable reading C# ...

Full Stack Developer

Location
Belfast City District, Northern Ireland, United Kingdom
Node.js REST APIs. Write TypeScript across the stack, working within a strict typing culture that leans on the compiler to catch mistakes early. Design and implement REST endpoints following the team’s established API conventions. Work with real-time features as part of the platform’s live-update … hooks and renderingbehaviour, not just general familiarity with acomponentframework. Experience building REST APIs on Node.js. Nice tohave: exposure to schema-first or contract-first API design — Express withOpenAPIor equivalent. Nice tohave: comfort with runtime type validation at trust boundaries — Zod, Yup, or similar. Nice tohave: experience writing unit ...

Mid-Level Data Engineer (Python/ AWS)

Location
Belfast, Northern Ireland, United Kingdom
cloud-based data platform. This is a hands-on role focused on designing, building, and improving data pipelines and services, while also contributing to API design and occasional frontend work where needed. You’ll work across the stack, primarily in Python and AWS, helping to deliver reliable, well … data through APIs, and supporting a platform that removes bottlenecks and enables better use of data across the organisation. What You’ll Be Doing Design, build, and maintain ETL/ELT pipelines in production environments Develop ingestion and egress patterns to support reliable data access and integration Work with ...

Software Engineer

Location
Derry/Londonderry, Northern Ireland, United Kingdom
sales colleagues to understand what we are building and why. What you’ll do Ship features end-to-end using AI agents, from design through to production. Take ownership of components and projects without needing constant direction. Contribute to code reviews and architectural discussions. Maintain and improve the engineering … more senior responsibilities as you develop and the team expands. What we need from you Strong technical fundamentals. Comfortable across front-end, back-end API design, and database work. Can understand and create production quality experiences with technical and customer minded care. Ability to work independently. ...

Software Engineer

Location
Derry and Strabane District, Northern Ireland, United Kingdom
sales colleagues to understand what we are building and why. What you will do Ship features end-to-end using AI agents, from design through to production. Take ownership of components and projects without needing constant direction. Contribute to code reviews and architectural discussions. Maintain and improve the engineering … more senior responsibilities as you develop and the team expands. What we need from you Strong technical fundamentals. Comfortable across front-end, back-end API design, and database work. Can understand and create production quality experiences with technical and customer minded care. Ability to work independently. ...

Innovation Software Developer

Hiring Organisation
EOS IT Solutions
Location
Armagh, Co. Armagh, UK
Employment Type
Full-time
edge-to-cloud data flows using MQTT, CoAP, and related technologies. Build robust solutions capable of handling real-time and high-volume sensor streams. Design Modern APIs and ServicesDevelop secure, scalable REST and gRPC services using FastAPI, Flask, and Node.js. Implement authentication, authorization, observability, testing, and performance monitoring. Ensure … reliability, maintainability, and best-practice API design. Deliver Digital Twin ExperiencesIntegrate real-time operational data with advanced 3D and 4D visualizations. Work with OpenUSD, NVIDIA Omniverse, and Unreal Engine technologies. Create interactive digital environments that represent assets and processes over time. Integrate AI and Machine LearningEmbed AI/ ...

Backend Software Engineer – Python/Flask (TimeKeeper)

Location
Belfast City District, Northern Ireland, United Kingdom
Group in Belfast is seeking a backend-focused Full Stack Software Engineer to strengthen the TimeKeeper platform. The role centres on Python-led development, API design and data layer work across web and mobile apps. You'll join a collaborative team, learn new tools quickly, and help build ...

Senior Software Engineer, Full Stack, Java

Location
Belfast City District, Northern Ireland, United Kingdom
Stack Location: Belfast The Role We are seeking a Senior Full Stack Software Engineer (Java) to join TRG Screen’s engineering team. You will design, develop, and evolve backend services and frontend applications across our enterprise product suite — a hands‐on role that blends new feature development with improving … driven engineering organisation; this role is expected to use AI tooling by default across the full development lifecycle. Responsibilities Development & Delivery Design, develop, and maintain backend systems and frontend applications, including modernisation of complex, established codebases. Participate in the full SDLC — requirements analysis, design, implementation, testing, deployment ...

Senior Software Engineer, Full Stack (C# (.NET)

Location
Belfast City District, Northern Ireland, United Kingdom
Team: Activity Monitor The Role We are seeking a Senior Full Stack Software Engineer (.NET) to join TRG Screen’s engineering team. You will design, develop, and evolve backend services and frontend applications across our enterprise product suite - a hands-on role that blends new feature development with improving … driven engineering organisation; this role is expected to use AI tooling by default across the full development lifecycle. Responsibilities Development & Delivery Design, develop, and maintain backend services and frontend applications for TRG Screen products, including modernisation and maintenance of legacy code. Participate in the full SDLC - requirements analysis, design ...

Senior Java Developer (6 month contract)

Location
Belfast City District, Northern Ireland, United Kingdom
/post-trade transparency, and venue/instrument data flowsTranslate regulatory requirements into robust, auditable technical solutionsParticipate in Agile ceremonies and contribute to design, development, testing, and documentationWrite unit, integration, and functional tests; support automated test pipelinesDeploy services in AWS and contribute to CI/CD pipeline developmentRequirements5+ years … Java development experience, with strong proficiency in Spring BootSolid understanding of microservices architecture and RESTful API designExperience deploying to and developing in AWS or other public cloud environmentsFamiliarity with Agile development practices and tools (e.g., Jira, Git, Jenkins)Strong communication skills and ability to work closely with non-technical ...