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        13 Permanent API jobs in Stevenage + 20 miles

        357 exact matches jobs are outside your preferred location

        Associate Front Office Developer

        EDF Trading Limited
        London
        Competitive
        Understanding of API and backend services development in .Net
        Understanding of API and backend services development in .Net
        Creating and Maintaining Documentation: Develop high-quality product documentation, including user guides, API references, release notes, FAQs, and onboarding materials using both traditional methods as well as utilising modern AI tooling.
        Creating and Maintaining Documentation: Develop high-quality product documentation, including user guides, API references, release notes, FAQs, and onboarding materials using both traditional methods as well as utilising modern AI tooling.
        more
        Full-Stack Feature Delivery: Design and build high-quality features covering both Front-end and Back-end, including robust API integration and effective data management (database interactions).
        Full-Stack Feature Delivery: Design and build high-quality features covering both Front-end and Back-end, including robust API integration and effective data management (database interactions).
        more
        Strong understanding of cloud native architectures, SaaS solutions (Salesforce, SAP, Dynamics CRM,ServiceNow, etc..), cybersecurity posture fundamentals, API ecosystems and legacy on-premise enterprise architectures
        Strong understanding of cloud native architectures, SaaS solutions (Salesforce, SAP, Dynamics CRM,ServiceNow, etc..), cybersecurity posture fundamentals, API ecosystems and legacy on-premise enterprise architectures
        more
        You understand the patterns (e.g., webhooks, polling, message queues, event-driven architectures), the challenges of API versioning, and the principles of building a scalable, multi-tenant integrations platform. * Systems Thinking: Strong understanding of modern backend building blocks: API best practices; message queues (RabbitMQ, SNS/SQS or similar); relational data stores (PostgreSQL or similar); and cloud services (AWS or similar).
        You understand the patterns (e.g., webhooks, polling, message queues, event-driven architectures), the challenges of API versioning, and the principles of building a scalable, multi-tenant integrations platform. * Systems Thinking: Strong understanding of modern backend building blocks: API best practices; message queues (RabbitMQ, SNS/SQS or similar); relational data stores (PostgreSQL or similar); and cloud services (AWS or similar).
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        Collaborate closely on system architecture, data flows, and API structures to ensure design feasibility and coherence.
        Collaborate closely on system architecture, data flows, and API structures to ensure design feasibility and coherence.
        more
        NEW
        Reporting to our CPO, you will lead the strategy and roadmap across mobile ticketing and payments, Account-Based Ticketing, EMV, our API and integration layer, and the requirements that underpin reliability, performance and service tiers. * Define and own the strategy for Masabis core platform domains, including ABT, EMV, mobile ticketing, the fare engine and our API and integration layer. * Treat our API platform and integration layer as first-class products. * Strengthen the developer and partner experience through improved API coverage, documentation and tooling.
        Reporting to our CPO, you will lead the strategy and roadmap across mobile ticketing and payments, Account-Based Ticketing, EMV, our API and integration layer, and the requirements that underpin reliability, performance and service tiers. * Define and own the strategy for Masabis core platform domains, including ABT, EMV, mobile ticketing, the fare engine and our API and integration layer. * Treat our API platform and integration layer as first-class products. * Strengthen the developer and partner experience through improved API coverage, documentation and tooling.
        more
        This role is part of our Digital Platform Services team, who are responsible for delivering central services to the divisions in an API first way by utilising AI to pioneer of AI-first development practices. * Design and implement scalable microservices with API-first mindset API-First & Microservices Excellence * Create comprehensive API documentation and developer guides API-First & Microservices Architecture * Deep knowledge of API design principles and RESTful/GraphQL patterns * Understanding of service mesh, API gateways, and inter-service communication * API design and documentation tools (Swagger/OpenAPI, Postman)
        This role is part of our Digital Platform Services team, who are responsible for delivering central services to the divisions in an API first way by utilising AI to pioneer of AI-first development practices. * Design and implement scalable microservices with API-first mindset API-First & Microservices Excellence * Create comprehensive API documentation and developer guides API-First & Microservices Architecture * Deep knowledge of API design principles and RESTful/GraphQL patterns * Understanding of service mesh, API gateways, and inter-service communication * API design and documentation tools (Swagger/OpenAPI, Postman)
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        Work closely with IT teams to support data integration initiatives, with our customers & brokers to leverage our API capabilities to streamline processes and enable seamless data exchange across platforms.
        Work closely with IT teams to support data integration initiatives, with our customers & brokers to leverage our API capabilities to streamline processes and enable seamless data exchange across platforms.
        more
        Post-training techniques for planning, reasoning & complex workflows (e.g., reasoning models, LLMs + knowledge graphs, test time compute, CoT pipelines, tool use & API calling, etc.)
        Post-training techniques for planning, reasoning & complex workflows (e.g., reasoning models, LLMs + knowledge graphs, test time compute, CoT pipelines, tool use & API calling, etc.)
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        nCino offers exciting career opportunities for individuals who want to join the worldwide leader in cloud banking. As a PreSales Solution Architect you will use your SaaS & Salesforce expertise and work closely with banks and financial institutions to innovate financial services. You will lead the solutioning for business challenges and present and demonstrate the value of the nCino solution. Responsibilities * Be a Trusted Advisor to prospects and clients by leading presales conversations, * presentations and solutioning around nCino-specific architectural design * Be a Thought Leader and provide guidance as it relates to SaaS, cloud infrastructure and AI, especially in relation to financial services * Be a Solution Consultant and lead deep-dive discovery sessions with prospects to identify target solution architecture and advise on best practices to meet functional
        nCino offers exciting career opportunities for individuals who want to join the worldwide leader in cloud banking. As a PreSales Solution Architect you will use your SaaS & Salesforce expertise and work closely with banks and financial institutions to innovate financial services. You will lead the solutioning for business challenges and present and demonstrate the value of the nCino solution. Responsibilities * Be a Trusted Advisor to prospects and clients by leading presales conversations, * presentations and solutioning around nCino-specific architectural design * Be a Thought Leader and provide guidance as it relates to SaaS, cloud infrastructure and AI, especially in relation to financial services * Be a Solution Consultant and lead deep-dive discovery sessions with prospects to identify target solution architecture and advise on best practices to meet functional
        more
        Our engineering team is dedicated to designing and developing robust backend services and applications that support Macquaries Commodities and Global Markets operations. We work collaboratively across functions to deliver reliable, high-performance solutions, ensuring our systems remain responsive, efficient, and scalable. Our focus is on maintaining code quality, fostering innovation, and continuously improving our technology landscape. While Macquarie offers hybrid working for many of our roles, this role does require 3 days a week in the advertised location. At Macquarie, our advantage is bringing together diverse people and empowering them to shape all kinds of possibilities. We are a global financial services group operating in 31 markets and with 56 years of unbroken profitability. Youll be part of a friendly and supportive team where everyone - no matter what r
        Our engineering team is dedicated to designing and developing robust backend services and applications that support Macquaries Commodities and Global Markets operations. We work collaboratively across functions to deliver reliable, high-performance solutions, ensuring our systems remain responsive, efficient, and scalable. Our focus is on maintaining code quality, fostering innovation, and continuously improving our technology landscape. While Macquarie offers hybrid working for many of our roles, this role does require 3 days a week in the advertised location. At Macquarie, our advantage is bringing together diverse people and empowering them to shape all kinds of possibilities. We are a global financial services group operating in 31 markets and with 56 years of unbroken profitability. Youll be part of a friendly and supportive team where everyone - no matter what r
        more
        Bicycle Therapeutics is a clinical-stage pharmaceutical company developing a novel class of medicines, referred to as Bicycle molecules, for diseases that are underserved by existing therapeutics. Bicycle molecules are fully synthetic short peptides constrained with small molecule scaffolds to form two loops that stabilize their structural geometry. This constraint facilitates target binding with high affinity and selectivity, making Bicycle molecules attractive candidates for drug development. The company is evaluating zelenectide pevedotin (formerly BT8009), a Bicycle Drug Conjugate (BDC) targeting Nectin-4, a well-validated tumor antigen; BT5528, a BDC molecule targeting EphA2, a historically undruggable target; and BT7480, a Bicycle Tumor-Targeted Immune Cell Agonist (Bicycle TICA) targeting Nectin-4 and agonizing CD137, in company-sponsored clinical trials.
        Bicycle Therapeutics is a clinical-stage pharmaceutical company developing a novel class of medicines, referred to as Bicycle molecules, for diseases that are underserved by existing therapeutics. Bicycle molecules are fully synthetic short peptides constrained with small molecule scaffolds to form two loops that stabilize their structural geometry. This constraint facilitates target binding with high affinity and selectivity, making Bicycle molecules attractive candidates for drug development. The company is evaluating zelenectide pevedotin (formerly BT8009), a Bicycle Drug Conjugate (BDC) targeting Nectin-4, a well-validated tumor antigen; BT5528, a BDC molecule targeting EphA2, a historically undruggable target; and BT7480, a Bicycle Tumor-Targeted Immune Cell Agonist (Bicycle TICA) targeting Nectin-4 and agonizing CD137, in company-sponsored clinical trials.
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        Are you a Software Engineer whos energised by solving real problems, comfortable with the unknown, and committed to building more than just good enough? Mention Me is revolutionising the world of referral, AdTech, and influencer marketing. We have already delivered $2bn in revenue for 500+ brands. We are shifting gears to scale up massively, moving from a single-language legacy stack to a modern, decoupled architecture driven by data and AI. We're entering an exciting new chapter. We're evolving our tech stack, embracing modern technologies, and building what's next. This isn't a role for someone who needs a playbook. We're looking for someone who can navigate ambiguity, pivot when the landscape shifts, and make smart decisions about which tools to use. If you're energised by figuring things out, learning constantly, and shipping work that genuinely moves the needle,
        Are you a Software Engineer whos energised by solving real problems, comfortable with the unknown, and committed to building more than just good enough? Mention Me is revolutionising the world of referral, AdTech, and influencer marketing. We have already delivered $2bn in revenue for 500+ brands. We are shifting gears to scale up massively, moving from a single-language legacy stack to a modern, decoupled architecture driven by data and AI. We're entering an exciting new chapter. We're evolving our tech stack, embracing modern technologies, and building what's next. This isn't a role for someone who needs a playbook. We're looking for someone who can navigate ambiguity, pivot when the landscape shifts, and make smart decisions about which tools to use. If you're energised by figuring things out, learning constantly, and shipping work that genuinely moves the needle,
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        NEW
        Join Proton and build a better internet where privacy is the default - At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech's invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive infor
        Join Proton and build a better internet where privacy is the default - At Proton, we believe that privacy is a fundamental human right and the cornerstone of democracy. Since our inception in 2014, founded by a team of scientists from CERN, we have dedicated ourselves to providing free and open-source technology to millions worldwide, ensuring access to privacy, security, and freedom online. Our journey began with Proton Mail, the largest secure email service globally, and has since expanded to include Proton VPN, Proton Calendar, Proton Drive, and Proton Pass. These tools empower individuals and organizations to take control of their personal data, break away from Big Tech's invasive practices, and defeat censorship. Our work impacts hundreds of millions of lives, from activists on the front lines defending freedom to leaders in governments protecting sensitive infor
        more
        Since being founded in 2018, Copper has been building the standard for institutional digital asset infrastructure with a focus on custody, collateral management, and prime services. Led by Amar Kuchinad, Copper's Global CEO, the firm provides a comprehensive suite of custody, trading and settlement solutions that reduce counterparty risk and bring greater capital and operational efficiency to digital asset markets. At the heart of Copper's offering is Multi-Party Computation (MPC) technology the gold standard in secure custody. Coppers multi-award winning custody system is unique in that it can be connected to centralised exchanges, DeFi applications and even staking pools without the assets leaving the custody. Built on top of this state-of-the-art custody, ClearLoop is the first solution in the market that overcomes a growing industry challenge; counterparty risk wi
        Since being founded in 2018, Copper has been building the standard for institutional digital asset infrastructure with a focus on custody, collateral management, and prime services. Led by Amar Kuchinad, Copper's Global CEO, the firm provides a comprehensive suite of custody, trading and settlement solutions that reduce counterparty risk and bring greater capital and operational efficiency to digital asset markets. At the heart of Copper's offering is Multi-Party Computation (MPC) technology the gold standard in secure custody. Coppers multi-award winning custody system is unique in that it can be connected to centralised exchanges, DeFi applications and even staking pools without the assets leaving the custody. Built on top of this state-of-the-art custody, ClearLoop is the first solution in the market that overcomes a growing industry challenge; counterparty risk wi
        more

        Front End Software Engineer

        Person Centred Software Limited
        Guildford, Surrey
        £45,000 - £55,000 a year
        At Person Centred Software, were building technology that makes a real difference in the lives of those in care. As a Frontend-focused Software Engineer, youll have a passion for User Interfaces and be experienced at working collaboratively with UI/UX designers, as well as Product Managers, Software Engineers, and Testers. You will contribute to the design and development of innovative software solutions that improve care outcomes across the UK. If you're passionate about writing clean, scalable code and collaborating within a high-performing, agile team, this is a fantastic opportunity to grow your impact in a meaningful sector. * Write clean, efficient, and maintainable code across the full software development life cycle * Develop front-end features using Microsoft .NET Blazor, while also contributing across the full-stack
        At Person Centred Software, were building technology that makes a real difference in the lives of those in care. As a Frontend-focused Software Engineer, youll have a passion for User Interfaces and be experienced at working collaboratively with UI/UX designers, as well as Product Managers, Software Engineers, and Testers. You will contribute to the design and development of innovative software solutions that improve care outcomes across the UK. If you're passionate about writing clean, scalable code and collaborating within a high-performing, agile team, this is a fantastic opportunity to grow your impact in a meaningful sector. * Write clean, efficient, and maintainable code across the full software development life cycle * Develop front-end features using Microsoft .NET Blazor, while also contributing across the full-stack
        more
        NEW
        Description - About Made Tech Our aim at Made Tech is to use human-centred technology to improve our society. We believe putting people at the heart of designing, building and delivering public services leads to better outcomes for everyone. Are you a Software Engineer that wants to actually see the real-world impact from what you help to create? Our mission is simple! We believe we can use tech to make public services better. We also believe this can happen best when our own team represents the society that actually used the services we work on. At Made Tech, were collectively continuing to grow a culture that is happy, healthy, safe and inspiring for people of all backgrounds and experiences, so we encourage all people from underrepresented groups to apply for roles with us. Have we caught your interest? Please read on
        Description - About Made Tech Our aim at Made Tech is to use human-centred technology to improve our society. We believe putting people at the heart of designing, building and delivering public services leads to better outcomes for everyone. Are you a Software Engineer that wants to actually see the real-world impact from what you help to create? Our mission is simple! We believe we can use tech to make public services better. We also believe this can happen best when our own team represents the society that actually used the services we work on. At Made Tech, were collectively continuing to grow a culture that is happy, healthy, safe and inspiring for people of all backgrounds and experiences, so we encourage all people from underrepresented groups to apply for roles with us. Have we caught your interest? Please read on
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        NEW
        Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secure as AI transforms how software is built. Our AI-native Developer Security Platform integrates seamlessly into development and security workflows, making it easy to find, fix, and prevent vulnerabilities from code and dependencies to containers and cloud. Our mission is to empower every developer to innovate securely in the AI era boosting productivity while reducing business risk. Were not your average security company - we build Snyk on One Team, Care Deeply, Customer Centric, and Forward Thinking. Its how we stay driven, supportive, and always one step ahead as AI reshapes our world. Our opportunity - As an Associate Software Engineer on the Rules Intelligence team, you'll be at the forefront of building the future of application security.
        Snyk is the leader in secure AI software development, helping millions of developers develop fast and stay secure as AI transforms how software is built. Our AI-native Developer Security Platform integrates seamlessly into development and security workflows, making it easy to find, fix, and prevent vulnerabilities from code and dependencies to containers and cloud. Our mission is to empower every developer to innovate securely in the AI era boosting productivity while reducing business risk. Were not your average security company - we build Snyk on One Team, Care Deeply, Customer Centric, and Forward Thinking. Its how we stay driven, supportive, and always one step ahead as AI reshapes our world. Our opportunity - As an Associate Software Engineer on the Rules Intelligence team, you'll be at the forefront of building the future of application security.
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        NEW
        More Than Just A Job - The goal is simple, to make healthy eating easy. To do this we need your support, building a scalable and maintainable rails eco-system that propels one of the UK's most loved start-ups forward. As a proud B-Corp we focus on using business as a force for good. We do this by balancing out people and planet with profit. For every recipe box bought we donate the equivalent of a school meal to a less developed country (over 20 million meals donated and counting...) and we have also pledged to go Net Zero by 2030 but there are so many other initiatives that we would love to tell you about! If you would like to join one of the UKs most loved start-ups and make a positive impact on people's lives, then we would love to speak with you. What we are looking for - As a Principal Engineer, you will play a pivotal role in leading and driving technical excell
        More Than Just A Job - The goal is simple, to make healthy eating easy. To do this we need your support, building a scalable and maintainable rails eco-system that propels one of the UK's most loved start-ups forward. As a proud B-Corp we focus on using business as a force for good. We do this by balancing out people and planet with profit. For every recipe box bought we donate the equivalent of a school meal to a less developed country (over 20 million meals donated and counting...) and we have also pledged to go Net Zero by 2030 but there are so many other initiatives that we would love to tell you about! If you would like to join one of the UKs most loved start-ups and make a positive impact on people's lives, then we would love to speak with you. What we are looking for - As a Principal Engineer, you will play a pivotal role in leading and driving technical excell
        more
        NEW

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        Frequently Asked Questions

        How many permanent API jobs are there in Stevenage?
        There are 13 permanent API jobs within 20 miles of Stevenage available on CWJobs right now.

        What other similar jobs are there to permanent API jobs in Stevenage?
        As well as permanent API jobs in Stevenage, you can find permanent Qa Automation, Quality Assurance, Java Developer, amongst many others.