Data Api Engineer jobs in Belfast

CME Group Inc.

A leading derivatives marketplace in Northern Ireland is looking for a Data Reliability Engineer II to take responsibility for the reliability and performance of database systems. This role focuses on proactive incident management, performance tuning, and automation within a modern data ecosystem, u

Citi

Engineer the future of global finance. At Citi, our Tech team doesn't just support finance – we are helping to redefine it. Every day, $5 trillion crosses through our network. We do business in 180+ countries operating at a scale few can match. From deploying advanced AI to helping shape global mark

Helic & Co.

This is a remote position. Job Summary We are seeking a skilled and detail-oriented Data Engineer to design, build, and maintain scalable data infrastructure and pipelines. In this role, you will be responsible for ensuring reliable data flow, optimizing data systems, and enabling analytics and busi

BT Group

Job Description* **Please wait...**Data EngineerReq ID: 56884Posting Start Date: 10/04/2026Job Function: Software EngineeringDivision: NetworksJob Location: GBR Belfast - Riverside Tower, GBR-London-BTHQ One BrahamAdvertised Salary: competitive + great benefits**All Locations: London, Belfast****Wor

La Fosse

Senior Data Engineer - £80k-£90k + bonus – London (hybrid) Find out if this opportunity is a good fit by reading all of the information that follows below. Our client are a globally leading and PE-backed services company, building out a completely greenfield Databricks platform and looking for an ex

ManpowerGroup

Senior Cabling / Smart Hands Engineer (Data Centre & Corporate) - Contract Multiple UK Locations - ASAP Start - Contract until 30/09 Overview We’re looking for experienced Senior Cabling / Smart Hands Engineers to support critical infrastructure work across data centre and corporate environments. Th

Citi

A global financial institution in Belfast is seeking a Mid-level Java Developer responsible for designing and implementing microservice applications using Java and Spring Boot. The position emphasizes automation and efficiency in financial processes, with opportunities for learning in a flexible hyb

Citi

Responsibilities Design, develop, and maintain high-quality, responsive, and performant user interfaces using TypeScript, React.js, and modern frontend technologies. Implement state management solutions (e.g., Redux, Redux Toolkit) to ensure scalable and maintainable application state. Collaborate w

The Mid-level UI Frontend Developer will be an integral part of the Identity Innovation space within the Cloud Technology Service department. This intermediate-level position is responsible for the design, development, and implementation of robust and intuitive user interfaces. The primary objective

Hawksworth

Position: Celonis Process Mining Data Engineer x2 Client: Investment bank Location: Central London Day rate: £700/day inside Initial duration: 6 months Our client provide technology services for a global investment bank. Do you have Celonis Process Mining experience working on complex banking data?

BT Group

A leading telecommunications company in Belfast seeks an experienced Data Engineer to design and maintain end-to-end data pipelines using Ab Initio and build scalable workloads with Apache Spark. This role requires expertise in big data solutions and CI/CD principles. You'll have opportunities for g

Data Reliability Engineer II (dRE) Tue - Sat Role Overview As a Data Reliability Engineer II , you will play a crucial, hands-on role in our global DRE team ensuring our critical database systems are reliable, fast, and scalable. Moving away from traditional, reactive database administration, our mi

Anson McCade

A leading tech company in Belfast is seeking a talented developer to build high-performance web applications and dashboards. You will be responsible for creating user-friendly insights from complex data, focusing primarily on React development. Ideal candidates should have experience in data visuali

Black Duck

Black Duck Software, Inc. helps organizations build secure, high-quality software, minimizing risks while maximizing speed and productivity. Black Duck, a recognized pioneer in application security, provides SAST, SCA, and DAST solutions that enable teams to quickly find and fix vulnerabilities and

aPriori Technologies

DescriptionWe are looking for an experienced Data Engineer to join aPriori's growing Data Platform Team, building and evolving a modern, scalable data platform which will leverage aPriori's proprietary data to deliver powerful insights and AI capabilities. Job TypeFull‐time LocationBelfast, Northern

hackajob

Senior Consultant, Data Engineer, AI&Data, UKI Location: Belfast Other locations: Primary Location Only Salary: Competitive Date: 12 Nov 2025Job DescriptionAt EY, we're all in to shape your future with confidence. We'll help you succeed in a globally connected powerhouse of diverse teams and tak

APEX Fintech Solutions UK

Apex Fintech Solutions, is a leading innovator in the fintech sector, leveraging advance... Apex Fintech Solutions is seeking an experienced Senior Software Engineer to develop backend systems and scalable Market Data APIs that drive critical domains such as Risk Engine, End Investor platforms, Weal

Cognify Search

Senior / Lead Analytics Engineer – Contract (x3) UK Remote (UK-based) 6-month contract We're partnered with one of the fastest-growing FinTech companies in Europe, currently expanding their data team following several new product launches. As a result of this rapid growth, there's now a sign

Biller Genie

Job Title: Lead Data Platform Engineer (AI and Data Platforms)Location: Belfast, Northern IrelandWork Arrangement: Hybrid In-Office We are seeking a Lead Data Platform Engineer to design and deliver the data and AI platform capabilities that accelerate safe, effective AI adoption across Biller Genie

Helic & Co.

This is a remote position. Job Summary We are seeking a skilled and detail-oriented Data Engineer to design, build, and maintain scalable data infrastructure and pipelines. In this role, you will be responsible for ensuring reliable data flow, optimizing data systems, and enabling analytics and busi