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11 Contract API jobs in County Antrim + 20 miles
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Use Postman for API testing and PowerShell to support automation.
Use Postman for API testing and PowerShell to support automation.
PREMIUM
System Architect (Belfast) – Financial Services Technology
System Architect (Belfast) – Financial Services Technology
VantagePoint
Belfast, County Antrim
Competitive
API and system integration expertise (REST, GraphQL, messaging middleware, data integration).
API and system integration expertise (REST, GraphQL, messaging middleware, data integration).
We are seeking innovative Frontend/API Developers proficient in React, TypeScript, GraphQL, to build user-friendly interfaces and efficient APIs for engagement with our AWS Data Lake. * Develop intuitive, scalable front-end applications using React and Typescript, integrated with API frameworks * Design and build efficient API solutions using GraphQL, ensuring seamless access to data lake resources * Optimize API performance for efficient real-time querying * Strong knowledge of GraphQL API development and query optimization
We are seeking innovative Frontend/API Developers proficient in React, TypeScript, GraphQL, to build user-friendly interfaces and efficient APIs for engagement with our AWS Data Lake. * Develop intuitive, scalable front-end applications using React and Typescript, integrated with API frameworks * Design and build efficient API solutions using GraphQL, ensuring seamless access to data lake resources * Optimize API performance for efficient real-time querying * Strong knowledge of GraphQL API development and query optimization
Top Skills: BrazeSmsTwilioWhatsappWhatsapp Business Api Join Kainos and Shape the Future
Top Skills: BrazeSmsTwilioWhatsappWhatsapp Business Api Join Kainos and Shape the Future
In this role, you will design, develop and maintain self-service tools and applications that enhance productivity and reduce operational costs. You will work across the full stackboth front-end and back-endto architect microservices (GKE) in Google Cloud Platform (GCP), driving our infrastructure towards greater automation and reliability. We are a global team across US, UK, India and Singapore made up of a diverse range of people from varied backgrounds who each bring unique network experiences and skill sets. The relatively new Network Reliability/Automation team are responsible for building a suite of custom automation tools and developing our self-healing capabilities while working closely with other members of the Network Services team in project delivery to ensure one of the largest Exchange network infrastructures in the world is highly available, resilient, ..
In this role, you will design, develop and maintain self-service tools and applications that enhance productivity and reduce operational costs. You will work across the full stackboth front-end and back-endto architect microservices (GKE) in Google Cloud Platform (GCP), driving our infrastructure towards greater automation and reliability. We are a global team across US, UK, India and Singapore made up of a diverse range of people from varied backgrounds who each bring unique network experiences and skill sets. The relatively new Network Reliability/Automation team are responsible for building a suite of custom automation tools and developing our self-healing capabilities while working closely with other members of the Network Services team in project delivery to ensure one of the largest Exchange network infrastructures in the world is highly available, resilient, ..
NEW
CME Technology and Support Services is relentlessly focused on developing the worlds most advanced electronic trading, post trade processing and risk management systems. We are the worlds leading and most diverse derivatives marketplace, providing risk management solutions that help drive the global economy. Our customers include leading investment and commercial banks, hedge funds, proprietary trading firms, pension funds, sovereign wealth funds, asset managers, corporations, and individual traders. The selected candidate will join the Data Services Domain within Technology in Belfast as a Senior Software Engineer. You will be part of the Market Data Core APIs and Processing team. This role will be instrumental in designing, developing, and maintaining the systems and tools used for the accurate calculation and dissemination of CME Group's proprietary market data ...
CME Technology and Support Services is relentlessly focused on developing the worlds most advanced electronic trading, post trade processing and risk management systems. We are the worlds leading and most diverse derivatives marketplace, providing risk management solutions that help drive the global economy. Our customers include leading investment and commercial banks, hedge funds, proprietary trading firms, pension funds, sovereign wealth funds, asset managers, corporations, and individual traders. The selected candidate will join the Data Services Domain within Technology in Belfast as a Senior Software Engineer. You will be part of the Market Data Core APIs and Processing team. This role will be instrumental in designing, developing, and maintaining the systems and tools used for the accurate calculation and dissemination of CME Group's proprietary market data ...
Role Overview This is a Senior QA Engineer role that sits within the Brokerage & Pricing team within the TP ICAP Technology division. The QA engineer will join an Agile team alongside other software engineers, working on the next generation of strategic back office applications, ensuring solutions provide maximum value to users. The teams focus on Brokerage & Pricing technology is to optimise the management of brokerage data and calculations used to drive all broking activity in our £1billion+ revenue Global Broking organisation, and carrying out commercial analysis on that data to understand revenues and drive client commercial agreements. The QA engineer will ensure comprehensive QA strategies are in place. They will develop and maintain automated testing frameworks, collaborate with various departments to understand system requirements, and design effective test ..
Role Overview This is a Senior QA Engineer role that sits within the Brokerage & Pricing team within the TP ICAP Technology division. The QA engineer will join an Agile team alongside other software engineers, working on the next generation of strategic back office applications, ensuring solutions provide maximum value to users. The teams focus on Brokerage & Pricing technology is to optimise the management of brokerage data and calculations used to drive all broking activity in our £1billion+ revenue Global Broking organisation, and carrying out commercial analysis on that data to understand revenues and drive client commercial agreements. The QA engineer will ensure comprehensive QA strategies are in place. They will develop and maintain automated testing frameworks, collaborate with various departments to understand system requirements, and design effective test ..
Sr Software Engineer - BETS CME Technology and Support Services is relentlessly focused on developing the worlds most advanced electronic trading, post trade processing and risk management systems. We are the worlds leading and most diverse derivatives market place providing risk management solutions that help drive the global economy. Our customers include leading investment and commercial banks, hedge funds, proprietary trading firms, pension funds, sovereign wealth funds, asset managers, corporations, and individual traders. The selected candidate will join the CME Engineering and Execution team in Belfast, as a Senior Software Engineer on the BrokerTec Back End Trading Services Team. The Belfast team is a high performing group of individuals that deliver on a broad range of functions including systems/business analysis, software development and quality assurance .
Sr Software Engineer - BETS CME Technology and Support Services is relentlessly focused on developing the worlds most advanced electronic trading, post trade processing and risk management systems. We are the worlds leading and most diverse derivatives market place providing risk management solutions that help drive the global economy. Our customers include leading investment and commercial banks, hedge funds, proprietary trading firms, pension funds, sovereign wealth funds, asset managers, corporations, and individual traders. The selected candidate will join the CME Engineering and Execution team in Belfast, as a Senior Software Engineer on the BrokerTec Back End Trading Services Team. The Belfast team is a high performing group of individuals that deliver on a broad range of functions including systems/business analysis, software development and quality assurance .
Software Engineer (Belfast) – Financial Services Technology
Software Engineer (Belfast) – Financial Services Technology
VantagePoint
Belfast, County Antrim
Competitive
Software Engineer Financial Services Technology - Are you an ambitious software engineer eager to work with cutting-edge technologies in financial services? Do you thrive in collaborative teams where learning, innovation, and delivery go hand in hand? If so, this role could be the perfect next step for you. About the Role - Our client, a leading global financial services institution, is building a new platform using the latest technologies and modern architecture. As a Software Engineer , you will join a newly formed team working closely with AWS experts and senior engineers. Youll contribute to the design, development, and testing of software, while gaining exposure to cloud-native practices and engineering excellence. This is a fantastic opportunity to grow your skills while helping shape the next generation of the organisations technology landscape. Key Responsibil
Software Engineer Financial Services Technology - Are you an ambitious software engineer eager to work with cutting-edge technologies in financial services? Do you thrive in collaborative teams where learning, innovation, and delivery go hand in hand? If so, this role could be the perfect next step for you. About the Role - Our client, a leading global financial services institution, is building a new platform using the latest technologies and modern architecture. As a Software Engineer , you will join a newly formed team working closely with AWS experts and senior engineers. Youll contribute to the design, development, and testing of software, while gaining exposure to cloud-native practices and engineering excellence. This is a fantastic opportunity to grow your skills while helping shape the next generation of the organisations technology landscape. Key Responsibil
As a Salesforce Solutions Architect, you will lead design and delivery of scalable Salesforce solutions, ensuring alignment with customer needs. Responsibilities include overseeing integrations, defining best practices, and providing technical guidance to teams. As a Lead Solutions Architect, you'll design Salesforce solutions, oversee integrations, define best practices, and lead cross-functional collaboration. Top Skills: Data Privacy RegulationsIntegration SystemsSalesforceArtificial Intelligence Marketing Tech Software ConsultingThe Salesforce B2B Solution Architect leads technical teams to develop enterprise Salesforce solutions, manages client engagements, and ensures project success. Top Skills: CSSExperience CloudHTMLLightning FrameworkOmsRest ApisSalesforceSalesforce B2B CommerceSalesforce Data ToolsSoap Apis Join Kainos and Shape the Future
As a Salesforce Solutions Architect, you will lead design and delivery of scalable Salesforce solutions, ensuring alignment with customer needs. Responsibilities include overseeing integrations, defining best practices, and providing technical guidance to teams. As a Lead Solutions Architect, you'll design Salesforce solutions, oversee integrations, define best practices, and lead cross-functional collaboration. Top Skills: Data Privacy RegulationsIntegration SystemsSalesforceArtificial Intelligence Marketing Tech Software ConsultingThe Salesforce B2B Solution Architect leads technical teams to develop enterprise Salesforce solutions, manages client engagements, and ensures project success. Top Skills: CSSExperience CloudHTMLLightning FrameworkOmsRest ApisSalesforceSalesforce B2B CommerceSalesforce Data ToolsSoap Apis Join Kainos and Shape the Future
Principal Software Engineer (Belfast) – Financial Services Technology
Principal Software Engineer (Belfast) – Financial Services Technology
VantagePoint
Belfast, County Antrim
Competitive
Proficiency in API design and development (REST, GraphQL).
Proficiency in API design and development (REST, GraphQL).
100 exact matches jobs are outside your preferred location
Senior Application Support Engineer
Senior Application Support Engineer
Hannon Transport Ltd
Craigavon, County Armagh
£45,000 - £55,000 a year
Develop Python services and utilities (ETL jobs, API clients, data quality checks, automation tools), packaged and containerised where suitable.
Develop Python services and utilities (ETL jobs, API clients, data quality checks, automation tools), packaged and containerised where suitable.
NEW
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UI Engineer / Front End Developer / Engineer – Angular – Remote
UI Engineer / Front End Developer / Engineer – Angular – Remote
MYO Talent
UK
From £450 to £550 per day Inside IR35
One of our leading clients is looking to recruit a UI Engineer / Developer / Front End Developer / Software Engineer. Location remote - Duration 6 months - Experience in a UI Engineer / Software Engineer / Front End Developer / Angular Developer role - Angular experience essential - Building and maintaining responsive and accessible interfaces at scale - Familiarity with state management libraries (e.g., Redux, Zustand) and component-based architectures - Solid understanding of web performance optimisation, testing (unit, integration, and end-to-end), and cross-browser compatibility - Collaborate with UX designers and product teams to translate design wireframes and prototypes into working front-end components - Ensure a consistent look and feel across all digital products through the implementation and maintenance of a shared design system.
One of our leading clients is looking to recruit a UI Engineer / Developer / Front End Developer / Software Engineer. Location remote - Duration 6 months - Experience in a UI Engineer / Software Engineer / Front End Developer / Angular Developer role - Angular experience essential - Building and maintaining responsive and accessible interfaces at scale - Familiarity with state management libraries (e.g., Redux, Zustand) and component-based architectures - Solid understanding of web performance optimisation, testing (unit, integration, and end-to-end), and cross-browser compatibility - Collaborate with UX designers and product teams to translate design wireframes and prototypes into working front-end components - Ensure a consistent look and feel across all digital products through the implementation and maintenance of a shared design system.
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Knowledge of API integration for interaction on the React app
Knowledge of API integration for interaction on the React app
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Create and manage REST/SOAP API integrations with third-party systems.
Create and manage REST/SOAP API integrations with third-party systems.
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Test Automation: Build and maintain robust, scalable test automation frameworks for API, integration, and end-to-end tests within the MLOps pipeline. * Experience with automation tools (e.g., Selenium, Playwright, Cypress) and API testing tools (e.g., Postman, REST Assured).
Test Automation: Build and maintain robust, scalable test automation frameworks for API, integration, and end-to-end tests within the MLOps pipeline. * Experience with automation tools (e.g., Selenium, Playwright, Cypress) and API testing tools (e.g., Postman, REST Assured).
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Cybersecurity Incident Response Specialist - CONTRACT OPPORTUNITY * Remote with occasional trips to London (not expensed). * £750.00 per day. * 6 months. * ASAP start, ASAP interviews. * Right to work in the UK mandatory. The Cybersecurity Incident Response Specialist will be responsible for investigating, analysing and providing specialist expertise for the resolution of security incidents / attacks aimed at the client. Support the long-term strategic goals of Cyber Operations pillar support Senior Analysts and Analysts in managing incidents and liaise with SOC engineers to ensure appropriate security measures, technologies and processes are in place to avoid reoccurrence of incidents. * Demonstrate an ability to understand in detail how an incident has occurred without relying on alerts (e.g., reviewing logs and threat intelligence data).
Cybersecurity Incident Response Specialist - CONTRACT OPPORTUNITY * Remote with occasional trips to London (not expensed). * £750.00 per day. * 6 months. * ASAP start, ASAP interviews. * Right to work in the UK mandatory. The Cybersecurity Incident Response Specialist will be responsible for investigating, analysing and providing specialist expertise for the resolution of security incidents / attacks aimed at the client. Support the long-term strategic goals of Cyber Operations pillar support Senior Analysts and Analysts in managing incidents and liaise with SOC engineers to ensure appropriate security measures, technologies and processes are in place to avoid reoccurrence of incidents. * Demonstrate an ability to understand in detail how an incident has occurred without relying on alerts (e.g., reviewing logs and threat intelligence data).
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About the role - We are looking for an experienced Search Relevance Engineer to help shape and optimise the search experience for millions of users. This role sits at the intersection of engineering and data science, focusing on search relevancy, ranking models, and query understanding. You will work closely with Product, Engineering, DevOps, and Data teams to design and deliver strategic projects that directly impact customer experience. What youll be doing * Fine-tuning keyword search (including BM25), query expansion, and retrieval methods (ANN dense retrieval, sparse retrieval, semantic search). * Applying techniques such as entity/name density recognition, query understanding, query rescorers, and learning-to-rank models. * Experimenting with embeddings and vector search to improve personalisation and semantic relevance.
About the role - We are looking for an experienced Search Relevance Engineer to help shape and optimise the search experience for millions of users. This role sits at the intersection of engineering and data science, focusing on search relevancy, ranking models, and query understanding. You will work closely with Product, Engineering, DevOps, and Data teams to design and deliver strategic projects that directly impact customer experience. What youll be doing * Fine-tuning keyword search (including BM25), query expansion, and retrieval methods (ANN dense retrieval, sparse retrieval, semantic search). * Applying techniques such as entity/name density recognition, query understanding, query rescorers, and learning-to-rank models. * Experimenting with embeddings and vector search to improve personalisation and semantic relevance.
SC Cleared Blue Prism Developer - 6 months - circa £500 a day INSIDE IR35 - Remote - We are looking for an SC Cleared BluePrism Developer to work within the Central Government sector - Looking for an experienced Automation developer. 1. Must have SC clearance - 2. Must have BluePrism Development experience - 3. Ideally have experience in PowerAutomate/APIs development - 4. Must be able to delivery independently, reporting to an automation lead but these automations will be theirs to own - Please forward your profile for consideration - Damia Group Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept our Data Protection Policy which can be found on our website. Please note that no terminology in this advert is intended to discriminate on the grounds of a person's
SC Cleared Blue Prism Developer - 6 months - circa £500 a day INSIDE IR35 - Remote - We are looking for an SC Cleared BluePrism Developer to work within the Central Government sector - Looking for an experienced Automation developer. 1. Must have SC clearance - 2. Must have BluePrism Development experience - 3. Ideally have experience in PowerAutomate/APIs development - 4. Must be able to delivery independently, reporting to an automation lead but these automations will be theirs to own - Please forward your profile for consideration - Damia Group Limited acts as an employment agency for permanent recruitment and employment business for the supply of temporary workers. By applying for this job you accept our Data Protection Policy which can be found on our website. Please note that no terminology in this advert is intended to discriminate on the grounds of a person's
Day Rate: £500 - £700 - Duration: 6 months - IR35: Outside Scope - Overview - Are you a talented Software Developer eager to take on exciting project-based work with leading organisations? We are seeking skilled developers for multiple contract opportunities across various sectors, including tech, finance, and healthcare. * Engage in diverse and challenging projects, delivering immediate value to clients while enhancing your technical skills. * Collaborate with innovative teams to design and implement robust software solutions that meet business needs. * Experience the flexibility of contract work, allowing you to choose projects that align with your expertise and career goals. These contract roles are ideal for developers looking to make an impact quickly and explore different industries while enjoying the freedom of flexible assignments. Key Skills
Day Rate: £500 - £700 - Duration: 6 months - IR35: Outside Scope - Overview - Are you a talented Software Developer eager to take on exciting project-based work with leading organisations? We are seeking skilled developers for multiple contract opportunities across various sectors, including tech, finance, and healthcare. * Engage in diverse and challenging projects, delivering immediate value to clients while enhancing your technical skills. * Collaborate with innovative teams to design and implement robust software solutions that meet business needs. * Experience the flexibility of contract work, allowing you to choose projects that align with your expertise and career goals. These contract roles are ideal for developers looking to make an impact quickly and explore different industries while enjoying the freedom of flexible assignments. Key Skills
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Job Title: Software Engineer - Job Type: Contract - Location: Remote - Key Responsibilities - Gather and analyze integration requirements and translate them into SnapLogic solutions. Design, develop, and maintain SnapLogic pipelines for diverse integration needs. Deploy, test, and optimize integration workflows for efficiency and reliability. Manage error handling, logging, and monitoring of pipelines. Ensure best practices are followed in development and deployment processes. Work closely with stakeholders, cross-functional teams, and business users to deliver solutions on time. Provide ongoing support, troubleshooting, and enhancements for existing integrations. Required Qualifications - Proven experience as a SnapLogic Developer/Engineer. Strong expertise in SnapLogic pipeline design, integration patterns, and deployment.
Job Title: Software Engineer - Job Type: Contract - Location: Remote - Key Responsibilities - Gather and analyze integration requirements and translate them into SnapLogic solutions. Design, develop, and maintain SnapLogic pipelines for diverse integration needs. Deploy, test, and optimize integration workflows for efficiency and reliability. Manage error handling, logging, and monitoring of pipelines. Ensure best practices are followed in development and deployment processes. Work closely with stakeholders, cross-functional teams, and business users to deliver solutions on time. Provide ongoing support, troubleshooting, and enhancements for existing integrations. Required Qualifications - Proven experience as a SnapLogic Developer/Engineer. Strong expertise in SnapLogic pipeline design, integration patterns, and deployment.
Backend API development + frontend (React/JavaScript) for annotation tools.
Backend API development + frontend (React/JavaScript) for annotation tools.
PREMIUM
Experience with real-time model inference and API development (e.g., FastAPI, Flask).
Experience with real-time model inference and API development (e.g., FastAPI, Flask).
NEW
See yourself at Dataminr - As a Senior Product Manager, Cybersecurity, you'll lead the development of cutting-edge, AI-powered cybersecurity products at Dataminr. In this role you'll be on the front lines, defining and delivering revolutionary, AI-powered products that solve the most critical security challenges. You'll work with world-class engineers and data scientists to turn groundbreaking ideas into market-defining solutions. This role is for a builder who thrives on fast-paced, high-impact worksomeone who is just as comfortable shaping product strategy as they are digging into the latest LLMs for threat detection. This remote position is open to candidates who are located in the UK or Ireland. AI Innovation at Dataminr - Working at Dataminr youll have the opportunity to tackle the most exciting trends in AI on a daily basis to power a revolutionary product that
See yourself at Dataminr - As a Senior Product Manager, Cybersecurity, you'll lead the development of cutting-edge, AI-powered cybersecurity products at Dataminr. In this role you'll be on the front lines, defining and delivering revolutionary, AI-powered products that solve the most critical security challenges. You'll work with world-class engineers and data scientists to turn groundbreaking ideas into market-defining solutions. This role is for a builder who thrives on fast-paced, high-impact worksomeone who is just as comfortable shaping product strategy as they are digging into the latest LLMs for threat detection. This remote position is open to candidates who are located in the UK or Ireland. AI Innovation at Dataminr - Working at Dataminr youll have the opportunity to tackle the most exciting trends in AI on a daily basis to power a revolutionary product that
Commercial experience of integrating Power Platform with third party API services and performing data migrations using appropriate integration tools (Kingswaysoft SSIS etc)
Commercial experience of integrating Power Platform with third party API services and performing data migrations using appropriate integration tools (Kingswaysoft SSIS etc)