Date posted
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Salaries
Locations
Locations
Salaries
Date posted
Type of Company
Job types
Locations
9 Permanent API jobs in Haywards Heath + 20 miles
771 exact matches jobs are outside your preferred location
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Senior .Net Integration Developer
Senior .Net Integration Developer
Rise Technical
Maidenhead, Berkshire
£50000.00 - £70000.00 per annum + + Training + Holiday
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
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Senior .Net Integration Developer
Senior .Net Integration Developer
Rise Technical Recruitment Limited
Maidenhead (SL6)
£50000.00 - £70000.00 per annum + + Training + Holiday
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
You will use your expertise in C#/.NET and modern APIs (REST, WebAPI, JSON, OAuth2) to build fault-tolerant, event-driven integrations, support customers and partners with API usage, and deliver clear, high-quality documentation while maintaining security, GDPR compliance, and operational reliability. Taking integration leadership, you will design and maintain well-documented financial and third-party integrations built on modern API standards. * Support customers and partners with integration setup and API usage
PREMIUM
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Drive adoption of cloud-native, API-first, and DevOps practices to accelerate delivery and improve resilience.
Drive adoption of cloud-native, API-first, and DevOps practices to accelerate delivery and improve resilience.
Extensive experience in API development both REST and SOAP. Experience with IntelliJ, Eclipse editor api.
Extensive experience in API development both REST and SOAP. Experience with IntelliJ, Eclipse editor api.
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Founding Full Stack Engineer (Python/TypeScript) – London - £180K
Founding Full Stack Engineer (Python/TypeScript) – London - £180K
Halian Technology Limited
London
Up to £185,000 per annum High founding member equity and Shares
API integrations, ETL, schema validation
API integrations, ETL, schema validation
Founding Full Stack Engineer (Python/TypeScript) – London - £180K
Founding Full Stack Engineer (Python/TypeScript) – London - £180K
Halian Technology Limited
London
Up to £185,000 per annum High founding member equity
API integrations, ETL, schema validation
API integrations, ETL, schema validation
RESTful API design and implementation expertise
RESTful API design and implementation expertise
Analyse technical capabilities, integrations, and API readiness.
Analyse technical capabilities, integrations, and API readiness.
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MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
MUST HAVES: Proficient in Flutter / React Native / MAUI, Mobile App Payment Services, strong API consumption, and App security best practices.
FEATURED
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Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
Operating in a rapidly evolving logistics sector, they will leverage cutting-edge Azure PaaS technologies (App Services, Functions, API Management, etc.) to drive efficiency, reliability, and innovation across high-impact national projects. * Experience with microservices architecture and API Management.
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Software Engineer (C# .Net & Visual Studio)
Software Engineer (C# .Net & Visual Studio)
TECHNOLOGY RESOURCING LIMITED
Bellfields, Guildford (GU1), GU1
From £40,000 to £51,000 per annum Annual bonus (currently £4.5–6K)
A Breadth of Exciting Projects: From AI-powered analytics and Bluetooth tracking to route optimization and custom API development, youll be solving real-world problems with modern tech.
A Breadth of Exciting Projects: From AI-powered analytics and Bluetooth tracking to route optimization and custom API development, youll be solving real-world problems with modern tech.
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Develop API integrations (Appsflyer, Firebase, sGTM)
Develop API integrations (Appsflyer, Firebase, sGTM)
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Strong knowledge of API integration.
Strong knowledge of API integration.
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API and SDK automation, metadata ingestion and catalogue enrichment
API and SDK automation, metadata ingestion and catalogue enrichment
Strong knowledge of API integration.
Strong knowledge of API integration.
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Cloud Solution Architect
Cloud Solution Architect
International Business Solutions Consulting Limited
Soho, Central London (W1), W1D
£500 per day
The ideal candidate will have strong experience in delivering large-scale, fault-tolerant systems; setting SLOs/SLIs, Terraform and modern CI/CD tools (Azure DevOps, GitHub Actions, Harness, Jenkins, Spinnaker), Containers & orchestration (Kubernetes) and service mesh (eg, Istio), API design & security (REST/OpenAPI, mTLS, authN/Z), Scripting in Bash, PowerShell, or Python, Cloud Expertise (Depth in One, Ready to Cross-Train), Azure: ARM/Bicep, AKS, Application Gateway, API Management, Azure Storage, GCP: GKE, Cloud Load Balancing, Cloud Armor, Istio, Stackdriver, Jenkins, Apigee. The ideal candidate will desirably have strong experience in Harness, HashiCorp Vault, Dynatrace, Docker/buildah, NodeJS for API tooling, Relevant Azure or GCP certifications.
The ideal candidate will have strong experience in delivering large-scale, fault-tolerant systems; setting SLOs/SLIs, Terraform and modern CI/CD tools (Azure DevOps, GitHub Actions, Harness, Jenkins, Spinnaker), Containers & orchestration (Kubernetes) and service mesh (eg, Istio), API design & security (REST/OpenAPI, mTLS, authN/Z), Scripting in Bash, PowerShell, or Python, Cloud Expertise (Depth in One, Ready to Cross-Train), Azure: ARM/Bicep, AKS, Application Gateway, API Management, Azure Storage, GCP: GKE, Cloud Load Balancing, Cloud Armor, Istio, Stackdriver, Jenkins, Apigee. The ideal candidate will desirably have strong experience in Harness, HashiCorp Vault, Dynatrace, Docker/buildah, NodeJS for API tooling, Relevant Azure or GCP certifications.
NEW
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APIs: REST API
APIs: REST API
FEATURED
Azure Cosmos DB (SQL/Mongo API), NoSQL modelling
Azure Cosmos DB (SQL/Mongo API), NoSQL modelling
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Experience with RESTful APIs, OAuth/JWT, and API security
Experience with RESTful APIs, OAuth/JWT, and API security
FEATURED
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API integrations
API integrations
FEATURED
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As a Technology Architect, you will leverage your expertise in Google Cloud Platform (GCP) and Apigee to design and implement robust API solutions. With a strong focus on cloud infrastructure, API security, and performance optimization, you will ensure seamless integration across enterprise systems. * Design and implement scalable API solutions using Google Cloud Platform and Apigee to meet business requirements. * Collaborate with cross-functional teams to integrate Apigee API Hub and Apigee Hybrid into existing systems. * Provide technical guidance on Apigee OPDK and Apigee X for optimised API management and performance. * Develop and maintain Apigee Developer Portal and Apigee Edge for streamlined API access and lifecycle management. * Implement security protocols
As a Technology Architect, you will leverage your expertise in Google Cloud Platform (GCP) and Apigee to design and implement robust API solutions. With a strong focus on cloud infrastructure, API security, and performance optimization, you will ensure seamless integration across enterprise systems. * Design and implement scalable API solutions using Google Cloud Platform and Apigee to meet business requirements. * Collaborate with cross-functional teams to integrate Apigee API Hub and Apigee Hybrid into existing systems. * Provide technical guidance on Apigee OPDK and Apigee X for optimised API management and performance. * Develop and maintain Apigee Developer Portal and Apigee Edge for streamlined API access and lifecycle management. * Implement security protocols
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Strong grasp of databases (SQL/NoSQL) and API integrations
Strong grasp of databases (SQL/NoSQL) and API integrations
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Martech Product Owner (iGaming)
Martech Product Owner (iGaming)
Technically Gifted Ltd
City of London (EC1V)
From £70,000 to £80,000 per annum
Ensure scalable, resilient API integration between MarTech tools, the Bonus Engine, product systems, and data warehouses - Define and manage the Bonus Engine roadmap, evolving API capabilities and reward mechanics to support campaign efficiency and player engagement.
Ensure scalable, resilient API integration between MarTech tools, the Bonus Engine, product systems, and data warehouses - Define and manage the Bonus Engine roadmap, evolving API capabilities and reward mechanics to support campaign efficiency and player engagement.
Act as the champion for TMF ODA and Open API principles across Energy Services Platform. Strong experience designing and implementing solutions using TM Forum Open APIs and a deep understanding of the ODA and Open API frameworks - Proficiency in RESTful API design, JSON, OpenAPI/Swagger specifications, microservices architecture, and cloud-native deployment models (Docker, Kubernetes, public/hybrid cloud platforms)
Act as the champion for TMF ODA and Open API principles across Energy Services Platform. Strong experience designing and implementing solutions using TM Forum Open APIs and a deep understanding of the ODA and Open API frameworks - Proficiency in RESTful API design, JSON, OpenAPI/Swagger specifications, microservices architecture, and cloud-native deployment models (Docker, Kubernetes, public/hybrid cloud platforms)
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Senior/Lead Full Stack Developer (React / Python) AI Start up!
Senior/Lead Full Stack Developer (React / Python) AI Start up!
Robert Half
City of London (EC1)
Negotiable
API & database experience
API & database experience