Date posted
Commute time
Locations
Type of Company
Job types
Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
8 API jobs in Chelmsford + 20 miles
734 exact matches jobs are outside your preferred location
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Senior Software Engineer
Senior Software Engineer
Halian Technology Limited
W1, Central London
From £90,000 to £95,000 per annum Plus bonus and benefits
Cloud experience withAWSservices (Lambda, API Gateway, S3, etc.)
Cloud experience withAWSservices (Lambda, API Gateway, S3, etc.)
NEW
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They're after a Principal Infrastructure Engineer who’s as comfortable scripting against an API as they are deep-diving into Nutanix clusters. * Automate everything – Terraform, PowerShell, Python, REST APIs (Nutanix CLI/API experience a big plus)
They're after a Principal Infrastructure Engineer who’s as comfortable scripting against an API as they are deep-diving into Nutanix clusters. * Automate everything – Terraform, PowerShell, Python, REST APIs (Nutanix CLI/API experience a big plus)
NEWFEATURED
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Python Backend Developer - AWS
Python Backend Developer - AWS
Infoplus Technologies UK Ltd
London
From £300 to £350 per day Max GBP 350/day Inside IR35
GraphQL, API authentication, performance management, and internationalization
GraphQL, API authentication, performance management, and internationalization
NEW
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Skilled in CMS platforms, FTP/API workflows, and basic networking
Skilled in CMS platforms, FTP/API workflows, and basic networking
FEATURED
Perform Dataverse customizations, SQL queries, and CRUD operations using REST/Web API calls. * JavaScript (customizations & API calls)
Perform Dataverse customizations, SQL queries, and CRUD operations using REST/Web API calls. * JavaScript (customizations & API calls)
NEW
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ASP.NET Web API
ASP.NET Web API
NEW
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API Integration: Minimum 6 years of experience * Knowledge of secure API design or blockchain data indexing
API Integration: Minimum 6 years of experience * Knowledge of secure API design or blockchain data indexing
NEW
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Develop and optimise ETL pipelines, data workflows and API integrations
Develop and optimise ETL pipelines, data workflows and API integrations
NEW
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Senior Node.js Developer
Senior Node.js Developer
ARC IT Recruitment Ltd
SW1V, South West London, SW1W 9SJ
Up to £100,000 per annum
Build and implement new API systems integrating with ferry operators, third-party service providers, and more.
Build and implement new API systems integrating with ferry operators, third-party service providers, and more.
C#, ASP.NET MVC, Web Services/ASP.NET Web API , REST API Asp.Net Core MS SQL server /PostgreSQL Entity Framework /LINQ Knowledge of ASP.NET Core and Client-side Frameworks (jQuery, Angular) Azure DevOps, Git repository and CI/CD Docker/Kubernetes Linux/Micro-Services Architecture - Experience planning and mapping out API integrations.
C#, ASP.NET MVC, Web Services/ASP.NET Web API , REST API Asp.Net Core MS SQL server /PostgreSQL Entity Framework /LINQ Knowledge of ASP.NET Core and Client-side Frameworks (jQuery, Angular) Azure DevOps, Git repository and CI/CD Docker/Kubernetes Linux/Micro-Services Architecture - Experience planning and mapping out API integrations.
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Promote modern architectural patterns, such as modular design and state management best practices (e.g., Redux, Zustand, or Context API).
Promote modern architectural patterns, such as modular design and state management best practices (e.g., Redux, Zustand, or Context API).
PREMIUM
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Create clear, concise and verifiable technical documentation, such as technical notes, API documents and integration guides.
Create clear, concise and verifiable technical documentation, such as technical notes, API documents and integration guides.
API Integrations: Minimum 5 years of experience * Previous work on API-driven front-ends or complex UI/UX projects
API Integrations: Minimum 5 years of experience * Previous work on API-driven front-ends or complex UI/UX projects
NEW
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ServiceNow Developer
ServiceNow Developer
83zero Limited
EC1, City of London
£60000 - £70000 per annum + Perks, Healthcare Options and Bens
Strong knowledge of JavaScript, HTML, CSS, Glide API, Flow Designer
Strong knowledge of JavaScript, HTML, CSS, Glide API, Flow Designer
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Monitor and incorporate changes to QA compliance incorporating relevant design codes (ASME, API, etc.)
Monitor and incorporate changes to QA compliance incorporating relevant design codes (ASME, API, etc.)
Exposure to OpenAI API or other modern AI/ML integrations.
Exposure to OpenAI API or other modern AI/ML integrations.
NEW
Senior Laravel Full Stack PHP Developer
Senior Laravel Full Stack PHP Developer
Anonymous Recruiter
RH2, Reigate
From £60,000 to £85,000 per annum Based on experience
Experience in API integrations, database optimisation, and server-side security
Experience in API integrations, database optimisation, and server-side security
NEW
AI Solutions Engineer - London
AI Solutions Engineer - London
Transparent Technology
London, EC1A 4RN
£70000 - £140000 per annum + + bens + shares
Especially integration with the OpenAI API GPT, Gemini, LLama, Claude etc.
Especially integration with the OpenAI API GPT, Gemini, LLama, Claude etc.
NEW
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Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
Proficiency in at least one major API testing framework - Experience withAzure (APIM, Azure Functions, API Services), React/React-Native and.NET Core
NEW
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Proficiency in JavaScript, Glide API, and ServiceNow development tools.
Proficiency in JavaScript, Glide API, and ServiceNow development tools.
NEW
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AWS experience (Lambda, SNS, S3, EKS, API Gateway) * Bonus points for: DBT, Airflow, Atlan, Iceberg, CI/CD, API modelling
AWS experience (Lambda, SNS, S3, EKS, API Gateway) * Bonus points for: DBT, Airflow, Atlan, Iceberg, CI/CD, API modelling
PREMIUM
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Proven experience building real-time or batch AI/ML pipelines with strong API design
Proven experience building real-time or batch AI/ML pipelines with strong API design
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Strong expertise in API integration, data modelling, ingestion, and activation
Strong expertise in API integration, data modelling, ingestion, and activation
NEW
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Cloud-savvy - Strong background in AWS, ideally with hands-on experience in serverless technologies like Lambda, API Gateway, DynamoDB, and AppSync.
Cloud-savvy - Strong background in AWS, ideally with hands-on experience in serverless technologies like Lambda, API Gateway, DynamoDB, and AppSync.
FEATURED
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Automation Lead (Power Automate)
Automation Lead (Power Automate)
Robert Half
EC1, City of London
£55000 - £65000 per annum + Bonus & Benefits
Integrate data sources including Microsoft Graph API, Dataverse, and SQL * Hands-on experience with Graph API, Dataverse, and SQL
Integrate data sources including Microsoft Graph API, Dataverse, and SQL * Hands-on experience with Graph API, Dataverse, and SQL