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57 Permanent API jobs in Marylebone (W1) + 20 miles
142 exact matches jobs are outside your preferred location
Proficient in API design, development & production operation
Proficient in API design, development & production operation
Exposure to API testing (e.g. RestAssured, Postman)
Exposure to API testing (e.g. RestAssured, Postman)
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Experience with API design standards & integration patterns
Experience with API design standards & integration patterns
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Integration & API Testing - proficiency with REST/OData service testing using tools like Postman or SoapUI
Integration & API Testing - proficiency with REST/OData service testing using tools like Postman or SoapUI
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Contribute to backend/API testing and support security testing initiatives. * Strong knowledge of API testing and backend validation.
Contribute to backend/API testing and support security testing initiatives. * Strong knowledge of API testing and backend validation.
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Experience with API design and development for both internal and external use cases
Experience with API design and development for both internal and external use cases
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The ideal candidate will have a robust background in AWS, Node.js, and React, along with expertise in NoSQL databases, RESTful API design and development, product development, and deployment of applications on both iOS and Android platforms.
The ideal candidate will have a robust background in AWS, Node.js, and React, along with expertise in NoSQL databases, RESTful API design and development, product development, and deployment of applications on both iOS and Android platforms.
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Senior Software Engineer / Software Developer
Senior Software Engineer / Software Developer
AWD Online
MK44, Bedford
From £60,000 to £70,000 per annum + Benefits
We have a fantastic new job opportunity for a Senior Software Engineer / Software Developer who has proven software application development experience across the stack C#, ASP, .NET, Blazor, API Development, Microservices, Containers and Deployment Pipelines. * Strong software development skills across the stack using C#, ASP .NET, Blazor, API development, microservices, containers, and deployment pipelines
We have a fantastic new job opportunity for a Senior Software Engineer / Software Developer who has proven software application development experience across the stack C#, ASP, .NET, Blazor, API Development, Microservices, Containers and Deployment Pipelines. * Strong software development skills across the stack using C#, ASP .NET, Blazor, API development, microservices, containers, and deployment pipelines
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We are seeking a proactive and customer-focused Service Desk Analyst to join our Service Management team. In this role, you will deliver prompt and professional solutions for customer requests and be the first point of contact for our internal and external users, providing essential technical support. You will receive, triage, and resolve a wide range of IT-related incidents and service requests, ensuring a smooth and efficient user experience. Your ability to communicate effectively, diagnose issues, and escalate appropriately will be crucial to your success. Provide first-line support to users, attempting to resolve issues at Level 1. Diagnose and troubleshoot hardware, software, and network issues. Escalate complex incidents to Level 2 and 3 support teams, providing detailed information. Track and monitor incidents, ensuring timely resolution and communication with
We are seeking a proactive and customer-focused Service Desk Analyst to join our Service Management team. In this role, you will deliver prompt and professional solutions for customer requests and be the first point of contact for our internal and external users, providing essential technical support. You will receive, triage, and resolve a wide range of IT-related incidents and service requests, ensuring a smooth and efficient user experience. Your ability to communicate effectively, diagnose issues, and escalate appropriately will be crucial to your success. Provide first-line support to users, attempting to resolve issues at Level 1. Diagnose and troubleshoot hardware, software, and network issues. Escalate complex incidents to Level 2 and 3 support teams, providing detailed information. Track and monitor incidents, ensuring timely resolution and communication with
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Senior Software Engineer
Senior Software Engineer
Verifile Ltd
Bedford, Bedfordshire, MK44 3JZ
From £60,000 to £70,000 per annum Plus excellent benefits
Strong software development skills across the stack using C#, ASP .NET, Blazor, API development, microservices, containers, and deployment pipelines.
Strong software development skills across the stack using C#, ASP .NET, Blazor, API development, microservices, containers, and deployment pipelines.
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Familiarity with REST API testing using tools like Postman.
Familiarity with REST API testing using tools like Postman.
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Additionally, our apps and API are trusted by tens of thousands of drivers and fleets including Blue Badge innovators Motability Operations.
Additionally, our apps and API are trusted by tens of thousands of drivers and fleets including Blue Badge innovators Motability Operations.
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Upvests Investment API is easy to integrate so that fintechs and enterprises alike can save resources and fully focus on their core business.? Were building the first European Investment API to enable any financial institution offering a wide range of efficient and transparent investment products, such as stocks and ETFs in nominal, portfolio, and fractional form. * Continuous learning: The complex yet fascinating field of investments, building an API product on a state-of-the-art tech stack, and working with the most relevant fintechs and financial institutions provide for an incredibly rewarding learning experience.
Upvests Investment API is easy to integrate so that fintechs and enterprises alike can save resources and fully focus on their core business.? Were building the first European Investment API to enable any financial institution offering a wide range of efficient and transparent investment products, such as stocks and ETFs in nominal, portfolio, and fractional form. * Continuous learning: The complex yet fascinating field of investments, building an API product on a state-of-the-art tech stack, and working with the most relevant fintechs and financial institutions provide for an incredibly rewarding learning experience.
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Leverage knowledge of data analysis, API documentation and payment processing manage, coach, and develop a team of hybrid L1 and L2 associates
Leverage knowledge of data analysis, API documentation and payment processing manage, coach, and develop a team of hybrid L1 and L2 associates
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Power BI & Fabric Developer (Project Controls/Primavera P6 Data) at BaseOne, London, £Competitive Day Rate
Power BI & Fabric Developer (Project Controls/Primavera P6 Data) at BaseOne, London, £Competitive Day Rate
Baseone
London
Competitive
Contract / FTC / Perm | Remote (UK) with occasional client site visits | Competitive - About BaseOne - At BaseOne, we design and deliver human-centric data solutions for some of the worlds most complex projects from major infrastructure to energy and banking. Our team blends deep domain expertise in project controls with modern tools like Power BI, Microsoft Fabric, and AI-driven analytics , helping clients make better decisions with confidence. Were now looking for a Power BI & Fabric Developer with hands-on experience in Primavera P6 project controls data to join our delivery team. This is a chance to work on high-impact projects across the UK and internationally, building reporting solutions that simplify complexity for decision makers. The Role - Youll be part of a multidisciplinary team working directly with project controls, PMO, and client stakeholders.
Contract / FTC / Perm | Remote (UK) with occasional client site visits | Competitive - About BaseOne - At BaseOne, we design and deliver human-centric data solutions for some of the worlds most complex projects from major infrastructure to energy and banking. Our team blends deep domain expertise in project controls with modern tools like Power BI, Microsoft Fabric, and AI-driven analytics , helping clients make better decisions with confidence. Were now looking for a Power BI & Fabric Developer with hands-on experience in Primavera P6 project controls data to join our delivery team. This is a chance to work on high-impact projects across the UK and internationally, building reporting solutions that simplify complexity for decision makers. The Role - Youll be part of a multidisciplinary team working directly with project controls, PMO, and client stakeholders.
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Get to know The Pokémon Company International - The Pokémon Company International, a subsidiary of The Pokémon Company in Japan, manages the property outside of Asia and is responsible for brand management, licensing, marketing, the Pokémon Trading Card Game, the animated TV series, home entertainment, and the official Pokémon website. Pokémon was launched in Japan in 1996 and today is one of the most popular children's entertainment properties in the world. Get to know the role * Job Title: Manager, Software Development - This role is ideal for a technically adept leader with a strong understanding of modern cloud-native architectures, agile delivery, and platform engineering. Youll be responsible for ensuring the platform is scalable, resilient, and delivers a world-class shopping experience to Pokémon fans globally. * People Manager: Yes - What youll do
Get to know The Pokémon Company International - The Pokémon Company International, a subsidiary of The Pokémon Company in Japan, manages the property outside of Asia and is responsible for brand management, licensing, marketing, the Pokémon Trading Card Game, the animated TV series, home entertainment, and the official Pokémon website. Pokémon was launched in Japan in 1996 and today is one of the most popular children's entertainment properties in the world. Get to know the role * Job Title: Manager, Software Development - This role is ideal for a technically adept leader with a strong understanding of modern cloud-native architectures, agile delivery, and platform engineering. Youll be responsible for ensuring the platform is scalable, resilient, and delivers a world-class shopping experience to Pokémon fans globally. * People Manager: Yes - What youll do
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About AppyWay - AppyWay helps cities reduce carbon emissions by making it easier to manage and find parking. The company started with a simple parking app called AppyParking because street parking data wasnt easy to access or understand. This led them to create the largest database of standardized parking data in the UK. Our Traffic Suite platform empowers local authorities with best-in-class kerbside data, APIs, and tools to manage traffic orders, parking, and street space more efficiently. Now, AppyWays platform is used by cities across Europe and even in New York City. It provides parking maps, real-time availability, and cashless payment options to help drivers and delivery fleets find parking more efficiently. Theyve raised over £20 million from investors like Hyundai and Mastercard to continue growing.
About AppyWay - AppyWay helps cities reduce carbon emissions by making it easier to manage and find parking. The company started with a simple parking app called AppyParking because street parking data wasnt easy to access or understand. This led them to create the largest database of standardized parking data in the UK. Our Traffic Suite platform empowers local authorities with best-in-class kerbside data, APIs, and tools to manage traffic orders, parking, and street space more efficiently. Now, AppyWays platform is used by cities across Europe and even in New York City. It provides parking maps, real-time availability, and cashless payment options to help drivers and delivery fleets find parking more efficiently. Theyve raised over £20 million from investors like Hyundai and Mastercard to continue growing.
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London - Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. We are looking for a proactive, thorough Senior Software Engineer to help build our Defi platform. You will play a critical role in building financial and crypto-native products, services and APIs. As a Senior Back-End Engineer you should lead by example - driving the technical discussions, influencing the approach and making a positive impact on the team's development by advocating the best engineering practices. Build on our DeFi wallet platform, expanding support for multiple networks - Develop and integrate APIs from new and existing services, to our various product applications. Be a part of a dedicated engineering team committed to applying the highest
London - Offering the largest production blockchain platform in the world, we share the passion to code, create, and ultimately build an open, accessible and fair financial future, one piece of software at a time. We are looking for a proactive, thorough Senior Software Engineer to help build our Defi platform. You will play a critical role in building financial and crypto-native products, services and APIs. As a Senior Back-End Engineer you should lead by example - driving the technical discussions, influencing the approach and making a positive impact on the team's development by advocating the best engineering practices. Build on our DeFi wallet platform, expanding support for multiple networks - Develop and integrate APIs from new and existing services, to our various product applications. Be a part of a dedicated engineering team committed to applying the highest
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Live shows make us feel good. They're a time to hang with our friends, discover new artists or lose ourselves on a dancefloor. We're on a mission to bring all of this to more fans, more often and that's where you come in. We are looking for a Technical Support Engineer to join our Product Team and help provide solutions and support to keep DICE products running smoothly. At DICE, you'll be part of the company that's redefining live entertainment. It's a place where you can be yourself, influence the culture, and create work that you're proud of. About the role - As a Technical Support Engineer, you'll be working closely with the Product, Design and Engineering team to support the core business, which includes the Fan Support, Client Success, Field Ops and Account Management teams. This is a fantastic opportunity for an inquisitive individual who is eager to learn and
Live shows make us feel good. They're a time to hang with our friends, discover new artists or lose ourselves on a dancefloor. We're on a mission to bring all of this to more fans, more often and that's where you come in. We are looking for a Technical Support Engineer to join our Product Team and help provide solutions and support to keep DICE products running smoothly. At DICE, you'll be part of the company that's redefining live entertainment. It's a place where you can be yourself, influence the culture, and create work that you're proud of. About the role - As a Technical Support Engineer, you'll be working closely with the Product, Design and Engineering team to support the core business, which includes the Fan Support, Client Success, Field Ops and Account Management teams. This is a fantastic opportunity for an inquisitive individual who is eager to learn and
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27 June 2025 - Job Description - Reporting of the Role - This role reports to Lead Python Developer - Overview of job - We're looking for a multi-skilled, adaptable developer with a passion for high quality code to join our established development team. 3 best things about the job * Getting to work on some outstanding products that get used by over 30 million people. * Work in a team that this is a fun, creative and satisfying place for developers to work. * Work in a team where we believe in code reviews, paired programming, continuous integration, hack time and investing in developers to make them better. * Contributed to delivering phenomenal solutions for delivering the latest innovations to our digital products. * Proven a collaborative approach to delivering solutions. * Shown passion to learn new things and to share knowledge with others.
27 June 2025 - Job Description - Reporting of the Role - This role reports to Lead Python Developer - Overview of job - We're looking for a multi-skilled, adaptable developer with a passion for high quality code to join our established development team. 3 best things about the job * Getting to work on some outstanding products that get used by over 30 million people. * Work in a team that this is a fun, creative and satisfying place for developers to work. * Work in a team where we believe in code reviews, paired programming, continuous integration, hack time and investing in developers to make them better. * Contributed to delivering phenomenal solutions for delivering the latest innovations to our digital products. * Proven a collaborative approach to delivering solutions. * Shown passion to learn new things and to share knowledge with others.
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Location: London or UK Remote - Reporting to: Technical Lead, Hometree Services - About Hometree - Join Hometree Group and be at the forefront of transforming the residential energy landscape. Founded in 2015, Hometree began in the home cover market. Today were spearheading the shift to decentralised, digitised home energy systems using heat pumps, solar panels, batteries, EV chargers and smart controls. This approach isnt just about sustainability; it empowers homeowners to manage energy more efficiently and cost-effectively, setting new standards in energy consumption. * Financial Services: Here, you'll contribute to offering flexible financing options that make it feasible for homeowners to embrace renewable energy technologies and make essential upgrades. * Energy Services: Be part of our extensive network of local installation businesses that equip homeowners wit
Location: London or UK Remote - Reporting to: Technical Lead, Hometree Services - About Hometree - Join Hometree Group and be at the forefront of transforming the residential energy landscape. Founded in 2015, Hometree began in the home cover market. Today were spearheading the shift to decentralised, digitised home energy systems using heat pumps, solar panels, batteries, EV chargers and smart controls. This approach isnt just about sustainability; it empowers homeowners to manage energy more efficiently and cost-effectively, setting new standards in energy consumption. * Financial Services: Here, you'll contribute to offering flexible financing options that make it feasible for homeowners to embrace renewable energy technologies and make essential upgrades. * Energy Services: Be part of our extensive network of local installation businesses that equip homeowners wit
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8x8, Inc. (NASDAQ: EGHT) believes that CX limits were meant to be shattered. We connect people and organizations through seamless communication on the industry's most integrated platform for Customer Experiencecombining Contact Center, Unified Communications, and CPaaS APIs. The 8x8 Platform for CX integrates AI at every level to enable personalized customer journeys, drive operational excellence and insights, and facilitate team collaboration. We help customer experience and IT leaders become the heartbeat of their organizations, empowering them to unlock the potential of every interaction. With one platform, one ecosystem, and one data model, you can turn every team into a customer-facing team and unify your CX to conquer the complexity. As an organization, we are looking for Team8s who are AI-proficient, open to innovation, and skilled in leveraging AI for efficien
8x8, Inc. (NASDAQ: EGHT) believes that CX limits were meant to be shattered. We connect people and organizations through seamless communication on the industry's most integrated platform for Customer Experiencecombining Contact Center, Unified Communications, and CPaaS APIs. The 8x8 Platform for CX integrates AI at every level to enable personalized customer journeys, drive operational excellence and insights, and facilitate team collaboration. We help customer experience and IT leaders become the heartbeat of their organizations, empowering them to unlock the potential of every interaction. With one platform, one ecosystem, and one data model, you can turn every team into a customer-facing team and unify your CX to conquer the complexity. As an organization, we are looking for Team8s who are AI-proficient, open to innovation, and skilled in leveraging AI for efficien
Company Description - MUFG Investor Services is a trusted partner to many of the worlds largest public and private funds, providing asset servicing and operational solutions built for alternatives. With over $1 trillion in client assets under administration, we offer fund administration, banking, payments, fund financing, foreign exchange overlay, corporate and regulatory services, custody, business consulting, and more. Operating from 17 locations worldwide, we help clients mitigate risk, enhance efficiency, and navigate the operational complexities of todays investment management landscape. As a division of Mitsubishi UFJ Financial Group (MUFG), one of the worlds largest financial institutions with approximately $3 trillion in assets, we combine deep expertise with the strength and stability of a leading financial institution. To learn more, visit us at #LI-Hybrid
Company Description - MUFG Investor Services is a trusted partner to many of the worlds largest public and private funds, providing asset servicing and operational solutions built for alternatives. With over $1 trillion in client assets under administration, we offer fund administration, banking, payments, fund financing, foreign exchange overlay, corporate and regulatory services, custody, business consulting, and more. Operating from 17 locations worldwide, we help clients mitigate risk, enhance efficiency, and navigate the operational complexities of todays investment management landscape. As a division of Mitsubishi UFJ Financial Group (MUFG), one of the worlds largest financial institutions with approximately $3 trillion in assets, we combine deep expertise with the strength and stability of a leading financial institution. To learn more, visit us at #LI-Hybrid
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
At least 2 years as an SA or at least 4 years in a similar customer-facing role, for example as a technical consultant, solution engineer or implementation engineer at an API-first (REST, GraphQL) SaaS company.
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Automate API testing using tools such as Postman, RestAssured, or equivalent . * RestAssured (BDD), Postman (for API testing).
Automate API testing using tools such as Postman, RestAssured, or equivalent . * RestAssured (BDD), Postman (for API testing).
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Related Jobs
Locations
- Shadwell
- The City, City (EC2)
- The City, City (EC3)
- Millwall
- Shoreditch
- The City, City (EC4)
- Charing Cross
- Gilwell Park
- Holloway
- Kempston
- City of London
- Central London
- East London
- West End
- North West London
- Bedford
- Reading
- Windsor
- Milton Keynes
- South West London
- London
- Berkshire
- Bedfordshire
- Buckinghamshire
- Surrey
- Cambridgeshire
- Hertfordshire
- Oxfordshire
- East Sussex
- Hampshire
- South East
- East Anglia