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3 Work From Home API jobs in Chelmsford + 20 miles
201 exact matches jobs are outside your preferred location
The Website Team focuses on managing the Website with the CMS (Sanity) with the goal to create high-fidelity UI implementation, good SEO placement, accessibility, Core Web Vitals, API integrations, and a robust internal component system built on our internal design system.
The Website Team focuses on managing the Website with the CMS (Sanity) with the goal to create high-fidelity UI implementation, good SEO placement, accessibility, Core Web Vitals, API integrations, and a robust internal component system built on our internal design system.
Deep understanding and hands-on experience with real-time API protocols, particularly REST and WebSockets.
Deep understanding and hands-on experience with real-time API protocols, particularly REST and WebSockets.
Job title: Machine Learning Engineer - Tech Lead - Location: London, Bristol, Edinburgh - Salary: £72,000 - £85,250 - Reporting to: Head of Data Science & Products - Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination. We help energy companies overcome today's challenges while accelerating the shift to a clean, electrified future. Our platform orchestrates millions of real-time decisions across homes, devices, markets and grids. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable, affordable and adaptive to everyday life. With teams across Europe, North America, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan, we power leading companies including OVO, AGL and ENGIE, as well as innovators like Volvo and Volkswagen.
Job title: Machine Learning Engineer - Tech Lead - Location: London, Bristol, Edinburgh - Salary: £72,000 - £85,250 - Reporting to: Head of Data Science & Products - Kaluza is the Energy Intelligence Platform, turning energy complexity into seamless coordination. We help energy companies overcome today's challenges while accelerating the shift to a clean, electrified future. Our platform orchestrates millions of real-time decisions across homes, devices, markets and grids. By combining predictive algorithms with human-centred design, Kaluza makes clean energy dependable, affordable and adaptive to everyday life. With teams across Europe, North America, Asia and Australia, and a joint venture with Mitsubishi Corporation in Japan, we power leading companies including OVO, AGL and ENGIE, as well as innovators like Volvo and Volkswagen.
Delivering security automation (scripting, API integration and via the Power Platform) * Experience of using and configuring API integrations
Delivering security automation (scripting, API integration and via the Power Platform) * Experience of using and configuring API integrations
Python, API frameworks (Flask, FastAPI), package managers (poetry, uv)
Python, API frameworks (Flask, FastAPI), package managers (poetry, uv)
The ideal candidate has prior experience solving complex forms of scaled abuse, building sophisticated protections across multiple parts of OpenAIs product suite (ChatGPT, API, Sora).
The ideal candidate has prior experience solving complex forms of scaled abuse, building sophisticated protections across multiple parts of OpenAIs product suite (ChatGPT, API, Sora).
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 and new ways of working.
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 and new ways of working.
Understanding of API and backend services development in .Net
Understanding of API and backend services development in .Net
Have experience with accessing API's and handling their responses;
Have experience with accessing API's and handling their responses;
Identity verification and authentication flows (e.g. account security, MFA, API-based identity) * Experience across multiple product areas within a platform or API-based company
Identity verification and authentication flows (e.g. account security, MFA, API-based identity) * Experience across multiple product areas within a platform or API-based company
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.
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).
Must have experience with .NET and C#, SDLC (Software Development Life Cycle), Database (SQL, Azure Data Store) and API/REST
Must have experience with .NET and C#, SDLC (Software Development Life Cycle), Database (SQL, Azure Data Store) and API/REST
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
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).
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.
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.
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)
The Developer Platform team supports 75B+ API calls and a growing marketplace with 300+ partner applications.
The Developer Platform team supports 75B+ API calls and a growing marketplace with 300+ partner applications.
Lead Transformation: Transition from monolithic applications to an API-first, modular platform strategy.
Lead Transformation: Transition from monolithic applications to an API-first, modular platform strategy.
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
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.)
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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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
As a Lead/Senior Solution Engineer (f/m/d)* at Parloa, you play a central role in helping customers understand the real value of our conversational AI platform. Youll guide prospects and customers through their technical journey with us - shaping solutions, validating feasibility, and ensuring each engagement is grounded in business impact. Working in close partnership with Sales, youll run discovery, design architectures, lead technical evaluations, and support a seamless path from first conversation to successful project. * Be responsible for the full spectrum of the technical sales process, from identifying customer pain to proving solutions. * Work closely with assigned sellers, co-owning accounts, and sales campaigns in the assigned territory. * Develop territory plans, participate in sales calls, lead technical deep dives, and conduct Proof of Value / Proof of .
As a Lead/Senior Solution Engineer (f/m/d)* at Parloa, you play a central role in helping customers understand the real value of our conversational AI platform. Youll guide prospects and customers through their technical journey with us - shaping solutions, validating feasibility, and ensuring each engagement is grounded in business impact. Working in close partnership with Sales, youll run discovery, design architectures, lead technical evaluations, and support a seamless path from first conversation to successful project. * Be responsible for the full spectrum of the technical sales process, from identifying customer pain to proving solutions. * Work closely with assigned sellers, co-owning accounts, and sales campaigns in the assigned territory. * Develop territory plans, participate in sales calls, lead technical deep dives, and conduct Proof of Value / Proof of .
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