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6 Contract API jobs in City of London + 20 miles
80 exact matches jobs are outside your preferred location
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We are looking for an experienced C# .Net Developer with experience of GenAI to join a team developing cutting edge AI solutions who will either have current and active SC clearance or have the ability to be able to obtain SC clearance. You will provide solutions across both Azure and AWS technologies and importantly have a demonstrable background in C#.Net . This will be a very much collaborative role working with a range of domain experts. You will work on projects developing GenAI capabilities and provide guidance to non-technical people. What you will bring to the team * Solid C# .Net experience * Fine-tune Large Language Models (LLMs) and other generative architectures. * Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business use cases using prompt engineering and reinforcement learning.
We are looking for an experienced C# .Net Developer with experience of GenAI to join a team developing cutting edge AI solutions who will either have current and active SC clearance or have the ability to be able to obtain SC clearance. You will provide solutions across both Azure and AWS technologies and importantly have a demonstrable background in C#.Net . This will be a very much collaborative role working with a range of domain experts. You will work on projects developing GenAI capabilities and provide guidance to non-technical people. What you will bring to the team * Solid C# .Net experience * Fine-tune Large Language Models (LLMs) and other generative architectures. * Optimise pre-trained models (OpenAI, Anthropic, or open-source LLMs) for business use cases using prompt engineering and reinforcement learning.
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Architect secure integrations with Azure services (Functions, Logic Apps, Service Bus, API Management, Event Grid), Microsoft 365, and line-of-business systems via custom connectors * Integration design using Azure Functions, Logic Apps, API Management, Service Bus, Event Grid, custom connectors, and webhooks * Azure: Functions, Logic Apps, API Management, Service Bus, Event Grid, Key Vault, Monitor, Application Insights
Architect secure integrations with Azure services (Functions, Logic Apps, Service Bus, API Management, Event Grid), Microsoft 365, and line-of-business systems via custom connectors * Integration design using Azure Functions, Logic Apps, API Management, Service Bus, Event Grid, custom connectors, and webhooks * Azure: Functions, Logic Apps, API Management, Service Bus, Event Grid, Key Vault, Monitor, Application Insights
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Skilled in API development and microservices architecture
Skilled in API development and microservices architecture
Hands-on experience with API development and microservices architecture and end-to-end integrations * Hands-on experience with API development and microservices architecture * Knowledge of API Gateways and ISTIO, ability to diagnose and intercept failures in end-to-end communication
Hands-on experience with API development and microservices architecture and end-to-end integrations * Hands-on experience with API development and microservices architecture * Knowledge of API Gateways and ISTIO, ability to diagnose and intercept failures in end-to-end communication
Deep knowledge of REST API design, scalability, fault tolerance, and performance optimization.
Deep knowledge of REST API design, scalability, fault tolerance, and performance optimization.
Recommend authentication and security methods (OAuth 2.0, JWT, API keys)
Recommend authentication and security methods (OAuth 2.0, JWT, API keys)
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Embedded Solution Architect - Tax Technology
Embedded Solution Architect - Tax Technology
Sovos Compliance / Fiscal Reps Ltd
Brighton, East Sussex
Competitive
Recommend authentication and security methods (OAuth 2.0, JWT, API keys)
Recommend authentication and security methods (OAuth 2.0, JWT, API keys)
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Build your future with Sovos. If you're seeking a career where innovation meets impact, you've come to the right place. As a global leader, Sovos is transforming tax compliance from a business requirement to a force for growth while revolutionising how businesses navigate the ever-changing regulatory landscape. At Sovos, we're dedicated to more than just solving compliance challenges we're committed to making a positive and lasting difference in everything we do. Our teams operate on the modern edge of digital technology, working not only to solve complex business challenges but also to enrich our personal, professional, and local communities. Our purpose-built systems provide the tools you need to thrive in a world where governments demand increased visibility, faster reporting and greater control over business processes. Excited about the possibilities? So are we!
Build your future with Sovos. If you're seeking a career where innovation meets impact, you've come to the right place. As a global leader, Sovos is transforming tax compliance from a business requirement to a force for growth while revolutionising how businesses navigate the ever-changing regulatory landscape. At Sovos, we're dedicated to more than just solving compliance challenges we're committed to making a positive and lasting difference in everything we do. Our teams operate on the modern edge of digital technology, working not only to solve complex business challenges but also to enrich our personal, professional, and local communities. Our purpose-built systems provide the tools you need to thrive in a world where governments demand increased visibility, faster reporting and greater control over business processes. Excited about the possibilities? So are we!
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Senior Solution Architect - Tax Technology
Senior Solution Architect - Tax Technology
Sovos Compliance / Fiscal Reps Ltd
Brighton, East Sussex
Competitive
Build your future with Sovos. If you're seeking a career where innovation meets impact, you've come to the right place. As a global leader, Sovos is transforming tax compliance from a business requirement to a force for growth while revolutionising how businesses navigate the ever-changing regulatory landscape. At Sovos, we're dedicated to more than just solving compliance challenges we're committed to making a positive and lasting difference in everything we do. Our teams operate on the modern edge of digital technology, working not only to solve complex business challenges but also to enrich our personal, professional, and local communities. Our purpose-built systems provide the tools you need to thrive in a world where governments demand increased visibility, faster reporting and greater control over business processes. Excited about the possibilities? So are we!
Build your future with Sovos. If you're seeking a career where innovation meets impact, you've come to the right place. As a global leader, Sovos is transforming tax compliance from a business requirement to a force for growth while revolutionising how businesses navigate the ever-changing regulatory landscape. At Sovos, we're dedicated to more than just solving compliance challenges we're committed to making a positive and lasting difference in everything we do. Our teams operate on the modern edge of digital technology, working not only to solve complex business challenges but also to enrich our personal, professional, and local communities. Our purpose-built systems provide the tools you need to thrive in a world where governments demand increased visibility, faster reporting and greater control over business processes. Excited about the possibilities? So are we!
Optimise page load speed, rendering performance, and API response times. * Familiarity with RESTful API design and backend performance considerations.
Optimise page load speed, rendering performance, and API response times. * Familiarity with RESTful API design and backend performance considerations.
Used to design tools (e.g. Figma) and its API and integration tools;
Used to design tools (e.g. Figma) and its API and integration tools;
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Strong analytical thinking, communication skills, and experience with API-driven or extensible products are essential. * 5+ years as a Product Owner, Technical Product Manager, or similar role in SaaS, platform, API/SDK, or developer-focused products. * Deep knowledge of API-driven development and integration models. * Understanding of versioning, CI/CD pipelines, and open-API ecosystems.
Strong analytical thinking, communication skills, and experience with API-driven or extensible products are essential. * 5+ years as a Product Owner, Technical Product Manager, or similar role in SaaS, platform, API/SDK, or developer-focused products. * Deep knowledge of API-driven development and integration models. * Understanding of versioning, CI/CD pipelines, and open-API ecosystems.
Experience in various data ingestion and transformation patterns including real time processing, CDC, and API ingestion etc.
Experience in various data ingestion and transformation patterns including real time processing, CDC, and API ingestion etc.
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Help drive decisions on API design, synchronous vs. asynchronous processing, consistency models, and service boundaries for the broader platform. * AWS Cloud Expertise: Deep architectural knowledge of the AWS ecosystem, such as Lambda, API Gateway, S3, DynamoDB, IAM, and container orchestration (EKS/ECS).
Help drive decisions on API design, synchronous vs. asynchronous processing, consistency models, and service boundaries for the broader platform. * AWS Cloud Expertise: Deep architectural knowledge of the AWS ecosystem, such as Lambda, API Gateway, S3, DynamoDB, IAM, and container orchestration (EKS/ECS).
Understanding of API architecture and design patterns, including REST and GraphQL services.
Understanding of API architecture and design patterns, including REST and GraphQL services.
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AWS API Gateway
AWS API Gateway
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Our API design concepts. * Our current technology stack is AWS Serverless products ( Lambda , SQS , EventBridge , API Gateway , S3, ECS ) running Typescript (and Node.js) on the compute layer and backed by MongoDB for the database layer.
Our API design concepts. * Our current technology stack is AWS Serverless products ( Lambda , SQS , EventBridge , API Gateway , S3, ECS ) running Typescript (and Node.js) on the compute layer and backed by MongoDB for the database layer.
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5+ year experience in the card issuing ecosystem, preferably in a modern fintech with a platform and API products
5+ year experience in the card issuing ecosystem, preferably in a modern fintech with a platform and API products
Global Website Operations & Development Manager
Global Website Operations & Development Manager
Atlas Technology Solutions UK Limited
London
Competitive
Back-End Development Support: Contribute to server-side functionality using PHP, including API integrations, data processing, and business logic implementation, with guidance from your manager. Ability to read, modify, and write PHP code for server-side logic, data processing, and API integrations.
Back-End Development Support: Contribute to server-side functionality using PHP, including API integrations, data processing, and business logic implementation, with guidance from your manager. Ability to read, modify, and write PHP code for server-side logic, data processing, and API integrations.
The opportunity - We have an exciting opportunity for a Backend Staff Engineer who wants to be at the forefront of the AI revolution to help shape the future of the Engineering strategy - taking the team to the next level. Youll help to set the direction of backend engineering, be a key person in our AI capability development by navigating everything from decision making to implementation, whilst expertly supporting engineers to balance quality, rapid delivery and value with complexity. Salary - The salary range for this role is £100K to £125K. In person and remote working balance - We embrace a flexible hybrid work model. While we don't mandate specific office days, we ask Attesters to work on-site 2 days per week. This approach allows us to collaborate in person, while ensuring enough time remotely for deep, focussed work. What youll be doing
The opportunity - We have an exciting opportunity for a Backend Staff Engineer who wants to be at the forefront of the AI revolution to help shape the future of the Engineering strategy - taking the team to the next level. Youll help to set the direction of backend engineering, be a key person in our AI capability development by navigating everything from decision making to implementation, whilst expertly supporting engineers to balance quality, rapid delivery and value with complexity. Salary - The salary range for this role is £100K to £125K. In person and remote working balance - We embrace a flexible hybrid work model. While we don't mandate specific office days, we ask Attesters to work on-site 2 days per week. This approach allows us to collaborate in person, while ensuring enough time remotely for deep, focussed work. What youll be doing
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About Airwallex - Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software, we empower over 200,000 businesses worldwide including Brex, Rippling, Navan, Qantas, SHEIN and many more with fully integrated solutions to manage everything from business accounts, payments, spend management and treasury, to embedded finance at a global scale. Proudly founded in Melbourne, we have a team of over 2,000 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 billion and backed by world-leading investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is leading the charge in building the global payments and financial platform of the future
About Airwallex - Airwallex is the only unified payments and financial platform for global businesses. Powered by our unique combination of proprietary infrastructure and software, we empower over 200,000 businesses worldwide including Brex, Rippling, Navan, Qantas, SHEIN and many more with fully integrated solutions to manage everything from business accounts, payments, spend management and treasury, to embedded finance at a global scale. Proudly founded in Melbourne, we have a team of over 2,000 of the brightest and most innovative people in tech across 26 offices around the globe. Valued at US$8 billion and backed by world-leading investors including T. Rowe Price, Visa, Mastercard, Robinhood Ventures, Sequoia, Salesforce Ventures, DST Global, and Lone Pine Capital, Airwallex is leading the charge in building the global payments and financial platform of the future
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Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But we're more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 10 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks , we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA , and we have an insatiable hunger to 'wow'! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
Any company can tell you about how they are a multi award winning, market leading business and yes, we are both of those things in the world of IoT connectivity! But we're more than that. Our mission? To make IoT management a breeze for any device, anywhere. With over 10 million IoT subscriptions active in 165 countries and direct partnerships with 50 mobile networks , we connect you to more than 750 networks worldwide, delivering unmatched value across the IoT connectivity chain. Innovation is in our DNA , and we have an insatiable hunger to 'wow'! While we may not always get it right, our drive to collaborate, innovate, and achieve top-notch customer satisfaction never wavers. We offer industry expertise, stellar service support, and the most flexible, resilient, and secure connectivity solutions on the market.
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At Goodnotes, we believe that every individual holds untapped potential waiting to be unleashed. By reimagining the way we interact with information, we're merging human creativity with the breakthrough capabilities of AI. Our renewed vision and mission drive us to create the best medium for human and AI collaboration, empowering users to explore new dimensions of productivity, creativity, and learning. Join us on this journey as we transform digital note-taking into an inspiring and innovative experience. Our Values: Dream big * Be visionary, strategic, and open to innovation - Build great things * Work in service of our users, always improving and pushing higher - Operate like an owner * Take responsibility with bold decision-making and bias for action - Win like a sports team * Be trusting and collaborative while empowering others - Learn and grow fast
At Goodnotes, we believe that every individual holds untapped potential waiting to be unleashed. By reimagining the way we interact with information, we're merging human creativity with the breakthrough capabilities of AI. Our renewed vision and mission drive us to create the best medium for human and AI collaboration, empowering users to explore new dimensions of productivity, creativity, and learning. Join us on this journey as we transform digital note-taking into an inspiring and innovative experience. Our Values: Dream big * Be visionary, strategic, and open to innovation - Build great things * Work in service of our users, always improving and pushing higher - Operate like an owner * Take responsibility with bold decision-making and bias for action - Win like a sports team * Be trusting and collaborative while empowering others - Learn and grow fast
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London / Hybrid Full-time - Jones Knowles Ritchie (JKR) is a branding business, founded in 1990 and proudly independent ever since. We started out in the world of packaging, but now were worldwidefrom three founders, to more than 300 of us across the UK and US. Together, we build and deliver brands across the entire consumer experience. But even more important than what we do, is why we do it. Were here to inspire brands and people to be their true selves. To be brave. Be tenacious. And above all, be yourself. Because we believe thats the only way to truly be distinctive, everywhere. Were looking for a Creative Technologist to help shape the future of digital brand experience at JKR. This is a role for someone who sits comfortably between creativity, design, and technology - someone who experiments fearlessly, prototypes quickly, and brings emerging tools into the cre
London / Hybrid Full-time - Jones Knowles Ritchie (JKR) is a branding business, founded in 1990 and proudly independent ever since. We started out in the world of packaging, but now were worldwidefrom three founders, to more than 300 of us across the UK and US. Together, we build and deliver brands across the entire consumer experience. But even more important than what we do, is why we do it. Were here to inspire brands and people to be their true selves. To be brave. Be tenacious. And above all, be yourself. Because we believe thats the only way to truly be distinctive, everywhere. Were looking for a Creative Technologist to help shape the future of digital brand experience at JKR. This is a role for someone who sits comfortably between creativity, design, and technology - someone who experiments fearlessly, prototypes quickly, and brings emerging tools into the cre
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Are you searching for an opportunity to play a key role in driving the dramatic growth of a highly successful software company? At Poppulo, we're working on what's next in communications and workplace technology. As a pioneer in this industry, we understand that meaningfully reaching every employee is hard. And so is managing office space in a hybrid world. And so is improving the customer and guest experience. We exist to make each of these things easier. We exist to bring harmony to our customers. And we do that at enterprise scale. Our omnichannel employee communications, customer communications, and workplace experience platform is trusted by over 6,000 organizations today, reaching more than 35M employees and delivering content to 500,000+ digital signs. We know there's no such thing as a "perfect" candidate - we're all a work in progress and are growing new skil
Are you searching for an opportunity to play a key role in driving the dramatic growth of a highly successful software company? At Poppulo, we're working on what's next in communications and workplace technology. As a pioneer in this industry, we understand that meaningfully reaching every employee is hard. And so is managing office space in a hybrid world. And so is improving the customer and guest experience. We exist to make each of these things easier. We exist to bring harmony to our customers. And we do that at enterprise scale. Our omnichannel employee communications, customer communications, and workplace experience platform is trusted by over 6,000 organizations today, reaching more than 35M employees and delivering content to 500,000+ digital signs. We know there's no such thing as a "perfect" candidate - we're all a work in progress and are growing new skil