751 to 775 of 872 REST Jobs

Senior Developer

Hiring Organisation
SER Limited
Location
Guildford, Surrey, United Kingdom
Employment Type
Permanent
Salary
£55000 - £65000/annum
platform and build secure, scalable services and integrations. The Role Design, develop and enhance a SIP/VoIP platform and associated services Build REST APIs and value-add services Integrate with external systems including AI-driven voice, transcription and analytics services Troubleshoot SIP/RTP issues and improve platform reliability … ISO27001, PCI-DSS) Key Skills & Experience Strong SIP/VoIP protocol knowledge (SIP, SDP, RTP) 5+ years’ experience with Python or another OO language REST APIs, Flask/Django and secure systems development Linux (Ubuntu), Docker and Git-based workflows Wireshark for SIP/RTP troubleshooting Excellent communication skills Desirable ...

Senior Software Engineer Backend

Hiring Organisation
McGregor Boyall
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£60,000 - £110,000 per annum
Senior Software Engineer (Backend) - Identity & Authentication AWS * TypeScript * Node.js (NestJS) * REST APIs * Auth0 * Transmit Security * GitHub * CloudFormation Permanent, up to £110,000 TC ***Hybrid - 3 days office (either London or Manchester office) Leading financial services client is seeking a Senior Software Engineer and help shape their cybersecurity in a fast … across IAM, networking and compliance. Collaborate with Agile teams to deliver high-quality, secure software at scale. Key Skills: Strong Node.js/NestJS and REST API development experience. Skilled in AWS Build and evolve backend services that support login, MFA, and client authentication Proficient with IaC, CI/CD (CloudFormation ...

Senior Software Engineer Backend

Hiring Organisation
McGregor Boyall
Location
London, South East, England, United Kingdom
Employment Type
Contractor
Contract Rate
£600 - £650 per day
Senior Software Engineer (Backend) - Identity & Authentication AWS * TypeScript * Node.js (NestJS) * REST APIs * Auth0 * Transmit Security * GitHub * CloudFormation Contract - 12 months, upto £650/day inside IR35 ***Hybrid - 3 days office (either London or Manchester office) Leading financial services client is seeking a Senior Software Engineer and help shape their cybersecurity … across IAM, networking and compliance. Collaborate with Agile teams to deliver high-quality, secure software at scale. Key Skills: Strong Node.js/NestJS and REST API development experience. Skilled in AWS Build and evolve backend services that support login, MFA, and client authentication Proficient with IaC, CI/CD (CloudFormation ...

Senior Fullstack Developer

Hiring Organisation
Xact Placements Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
doing: Designing and developing enterprise-grade SaaS features across backend and frontend systems Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST) Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI Translating product and design requirements into elegant, maintainable solutions Troubleshooting and optimising performance … 5+ years’ experience building enterprise SaaS products (ideally in cybersecurity or data-heavy environments) Strong backend development with TypeScript, NestJS, Sequelize ORM, GraphQL, REST APIs Frontend expertise with ReactJS, NextJS, Typescript, Chakra UI Experience with MySQL and NoSQL databases Familiarity with messaging/event-driven systems (Kafka) Ability to work ...

Automation Test Engineer

Hiring Organisation
Fruition Group
Location
Slough, Berkshire, UK
Employment Type
Full-time
enhance an existing automation framework using SpecFlow, C#, Playwright, and SQL. Develop robust automated test suites for React-based UI and GraphQL/REST APIs. Conduct thorough manual and exploratory testing to validate business logic, financial calculations, and data workflows. Implement maintainable, scalable test automation aligned with CI/… Skills & Qualifications: 5+ years' experience in test automation with frameworks like SpecFlow and Playwright. Strong C#/.NET programming skills Experience testing GraphQL and REST APIs and building automated test suites. Solid SQL skills for data validation and workflow testing. Proficient in manual and exploratory testing methodologies. Familiarity with ...

Automation Test Engineer

Hiring Organisation
Fruition Group
Location
London, England, United Kingdom
enhance an existing automation framework using SpecFlow, C#, Playwright, and SQL. Develop robust automated test suites for React-based UI and GraphQL/REST APIs. Conduct thorough manual and exploratory testing to validate business logic, financial calculations, and data workflows. Implement maintainable, scalable test automation aligned with CI/… Skills & Qualifications: 5+ years' experience in test automation with frameworks like SpecFlow and Playwright. Strong C#/.NET programming skills Experience testing GraphQL and REST APIs and building automated test suites. Solid SQL skills for data validation and workflow testing. Proficient in manual and exploratory testing methodologies. Familiarity with ...

Python Developer

Hiring Organisation
Proactive Appointments
Location
Guildford, Surrey, England, United Kingdom
Employment Type
Full-Time
Salary
£55,000 - £65,000 per annum
Senior Python Developer to join their software development team. You will work on expanding and improving their enterprise-level SIP platform and associated REST APIs. Key responsibilities include: Designing, developing, and enhancing their SIP platform and associated services using Python Building value-added services and integrations, including AI-based voice … Experience 5+ years of Python or other object-oriented programming experience Strong understanding of OO design and software development principles Experience with HTTP/REST APIs Familiarity with Flask or Django, Jinja, Pytest, SQLAlchemy, Marshmallow Secure software and systems design (software & network level) Understanding of SIP/VoIP protocols ...

Application Developer

Hiring Organisation
Armstrong Talent Partners
Location
Glasgow, Lanarkshire, Scotland, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£50,000
estimate development effort and timelines; collaborate with product and operations teams in design, planning, forecasting and delivering on agreed milestones. Build and maintain integrations (REST, SOAP, other internal/external systems) as required by business and client needs. Work with the wider engineering and infrastructure teams to ensure delivered applications …/Graph-style APIs). Proven track record of planning, estimation, time forecasting and delivering to deadlines. Experience building and managing integrations, especially via REST and/or SOAP interfaces. Highly Advantageous Experience building or maintaining applications that leverage LLM inference, vector databases, or knowledge-graph technologies. Experience with ServiceNow ...

Python Developer

Hiring Organisation
Proactive Appointments
Location
Guildford, Surrey, United Kingdom
Employment Type
Permanent
Salary
GBP 55,000 - 65,000 Annual
Senior Python Developer to join their software development team. You will work on expanding and improving their enterprise-level SIP platform and associated REST APIs. Key responsibilities include: Designing, developing, and enhancing their SIP platform and associated services using Python Building value-added services and integrations, including AI-based voice … Experience 5+ years of Python or other object-oriented programming experience Strong understanding of OO design and software development principles Experience with HTTP/REST APIs Familiarity with Flask or Django, Jinja, Pytest, SQLAlchemy, Marshmallow Secure software and systems design (software & network level) Understanding of SIP/VoIP protocols ...

Senior Java Software Engineer

Hiring Organisation
Experis
Location
Newport, UK
Employment Type
Full-time
Build scalable event‐stream processing pipelines using Apache technologies (Kafka, Camel, Flink, etc.) Optimise services for throughput, reliability, and low latency Design and maintain REST APIs for internal and external use Collaborate with product and UI teams on data models and integration patterns Design relational data structures for high‐ingest … Strong experience building production back‐end systems Deep expertise in Java Solid understanding of distributed systems and microservice design Experience designing and implementing REST APIs Familiarity with Apache‐based data or messaging frameworks Experience with containerised deployments Strong debugging skills across multi‐service environments Clear communication and the ability ...

Senior Java Software Engineer

Hiring Organisation
Experis
Location
Bath, Somerset, UK
Employment Type
Full-time
Build scalable event‐stream processing pipelines using Apache technologies (Kafka, Camel, Flink, etc.) Optimise services for throughput, reliability, and low latency Design and maintain REST APIs for internal and external use Collaborate with product and UI teams on data models and integration patterns Design relational data structures for high‐ingest … Strong experience building production back‐end systems Deep expertise in Java Solid understanding of distributed systems and microservice design Experience designing and implementing REST APIs Familiarity with Apache‐based data or messaging frameworks Experience with containerised deployments Strong debugging skills across multi‐service environments Clear communication and the ability ...

Senior Java Software Engineer

Hiring Organisation
Experis
Location
City Of Bristol, England, United Kingdom
Build scalable event‐stream processing pipelines using Apache technologies (Kafka, Camel, Flink, etc.) Optimise services for throughput, reliability, and low latency Design and maintain REST APIs for internal and external use Collaborate with product and UI teams on data models and integration patterns Design relational data structures for high‐ingest … Strong experience building production back‐end systems Deep expertise in Java Solid understanding of distributed systems and microservice design Experience designing and implementing REST APIs Familiarity with Apache‐based data or messaging frameworks Experience with containerised deployments Strong debugging skills across multi‐service environments Clear communication and the ability ...

Remote Senior Full Stack Engineer

Hiring Organisation
Xact Placements Limited
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£70,000 - £80,000 per annum
doing: Designing and developing enterprise-grade SaaS features across backend and frontend systems Building secure, scalable, and high-performing APIs and services (NestJS, GraphQL, REST) Creating data-driven dashboards and UIs with React, Next.js, and Chakra UI Translating product and design requirements into elegant, maintainable solutions Troubleshooting and optimising performance … 5+ years’ experience building enterprise SaaS products (ideally in cybersecurity or data-heavy environments) Strong backend development with TypeScript, NestJS, Sequelize ORM, GraphQL, REST APIs Frontend expertise with ReactJS, NextJS, Typescript, Chakra UI Experience with MySQL and NoSQL databases Familiarity with messaging/event-driven systems (Kafka) Ability to work ...

Database Engineer

Hiring Organisation
Searchability
Location
London, South East, England, United Kingdom
Employment Type
Full-Time
Salary
£40,000 - £70,000 per annum
Experience with database backup, replication, recovery, and high-availability strategies Exposure to NoSQL technologies such as MongoDB Experience building or supporting ETL processes and REST API integrations Strong understanding of testing, monitoring, and alerting practices Clear communication skills and the ability to work effectively in a distributed team DESIRABLE EXPERIENCE … subject to required skills) your application to our client in conjunction with this vacancy only. KEY SKILLS PostgreSQL, Python, Database Engineering, Data Infrastructure, ETL, REST APIs, MongoDB, Cloud, GCP, Docker, Kubernetes, AI Platforms, Remote Engineering ...

Mid-Level Backend Engineer (London)

Hiring Organisation
nHabit
Location
Slough, Berkshire, UK
Employment Type
Full-time
improve how things are built. What You'll Be Doing Building and maintaining production backend services in Go and Python Designing and implementing clean REST APIs Working with PostgreSQL, writing and optimising SQL queries Developing services in a containerised, microservices environment Integrating with third-party APIs and internal services Building … production backend services Solid experience with Golang, or strong willingness to learn Go Experience using Python for APIs, scripts, or data processing Experience building REST APIs Familiarity with microservices architectures Strong experience with relational databases, especially PostgreSQL Confident SQL query writing, with basic optimisation and indexing Experience integrating with third ...

Mid-Level Backend Engineer (London)

Hiring Organisation
nHabit
Location
Greater London, England, United Kingdom
improve how things are built. What You’ll Be Doing Building and maintaining production backend services in Go and Python Designing and implementing clean REST APIs Working with PostgreSQL, writing and optimising SQL queries Developing services in a containerised, microservices environment Integrating with third-party APIs and internal services Building … production backend services Solid experience with Golang, or strong willingness to learn Go Experience using Python for APIs, scripts, or data processing Experience building REST APIs Familiarity with microservices architectures Strong experience with relational databases, especially PostgreSQL Confident SQL query writing, with basic optimisation and indexing Experience integrating with third ...

Senior Developer

Hiring Organisation
Stratospherec Ltd
Location
Horsham, West Sussex, United Kingdom
Employment Type
Permanent
Salary
£60000 - £70000/annum Excellent benefits
headquarters in Horsham, West Sussex. They are looking for candidates who can travel to the office once or twice a week and work the rest of the time. Tech skills .Net Core C# React Blazor Solid Principles Software Architecture Designs Desirable: AWS CI/CD Pipelines REST APIs ...

Oracle Fusion Cloud Sr. Technical Integration Manager

Hiring Organisation
Indotronix Avani UK Ltd
Location
South West London, London, United Kingdom
Employment Type
Contract
with OIC Excellent communication and leadership skills Strong problem-solving and analytical skills Proven hands-on expertise designing and building integrations using OIC adapters, REST/SOAP APIs, XML, XSD, XSLT, and JSON, and file-based orchestrations Experience securing integrations via OCI Vault, certificates, and OAuth2 token Top 3 essential … Integration Cloud (OIC), Oracle Service Oriented Architecture (SOA), and Oracle Service Bus (OSB) Proven hands-on expertise designing and building integrations using OIC adapters, REST/SOAP APIs, XML, XSD, XSLT, and JSON, and file-based orchestrations. Experience securing integrations via OCI Vault, certificates, and OAuth2 tokens Solid understanding ...

Senior Full Stack Engineer

Hiring Organisation
Levy Global
Location
United Kingdom
building enterprise SaaS products (background in cybersecurity, threat intelligence, or security tooling is a strong plus) Strong backend experience with TypeScript and NestJS , including REST and GraphQL APIs Experience designing and building complex, data-heavy UIs using React (Next.js and Chakra UI are a plus) Hands-on experience with relational … skills Take ownership and enjoy driving work forward Care about quality, performance, and continuous improvement Tech you’ll work with Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL Design: Figma (working from detailed designs and complex business requirements) Nice ...

Senior Full Stack Engineer

Hiring Organisation
Levy Global
Location
Belfast, UK
Employment Type
Full-time
building enterprise SaaS products (background in cybersecurity, threat intelligence, or security tooling is a strong plus) Strong backend experience with TypeScript and NestJS, including REST and GraphQL APIs Experience designing and building complex, data-heavy UIs using React (Next.js and Chakra UI are a plus) Hands-on experience with relational … skills Take ownership and enjoy driving work forward Care about quality, performance, and continuous improvement Tech you'll work with Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL Design: Figma (working from detailed designs and complex business requirements) Nice ...

Senior Full Stack Engineer

Hiring Organisation
Levy Global
Location
Southampton, UK
Employment Type
Full-time
building enterprise SaaS products (background in cybersecurity, threat intelligence, or security tooling is a strong plus) Strong backend experience with TypeScript and NestJS, including REST and GraphQL APIs Experience designing and building complex, data-heavy UIs using React (Next.js and Chakra UI are a plus) Hands-on experience with relational … skills Take ownership and enjoy driving work forward Care about quality, performance, and continuous improvement Tech you'll work with Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL Design: Figma (working from detailed designs and complex business requirements) Nice ...

Senior Full Stack Engineer

Hiring Organisation
Levy Global
Location
Cardiff, UK
Employment Type
Full-time
building enterprise SaaS products (background in cybersecurity, threat intelligence, or security tooling is a strong plus) Strong backend experience with TypeScript and NestJS, including REST and GraphQL APIs Experience designing and building complex, data-heavy UIs using React (Next.js and Chakra UI are a plus) Hands-on experience with relational … skills Take ownership and enjoy driving work forward Care about quality, performance, and continuous improvement Tech you'll work with Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL Design: Figma (working from detailed designs and complex business requirements) Nice ...

Senior Full Stack Engineer

Hiring Organisation
Levy Global
Location
Leicester, UK
Employment Type
Full-time
building enterprise SaaS products (background in cybersecurity, threat intelligence, or security tooling is a strong plus) Strong backend experience with TypeScript and NestJS, including REST and GraphQL APIs Experience designing and building complex, data-heavy UIs using React (Next.js and Chakra UI are a plus) Hands-on experience with relational … skills Take ownership and enjoy driving work forward Care about quality, performance, and continuous improvement Tech you'll work with Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL Design: Figma (working from detailed designs and complex business requirements) Nice ...

Senior Full Stack Engineer

Hiring Organisation
Levy Global
Location
Sheffield, UK
Employment Type
Full-time
building enterprise SaaS products (background in cybersecurity, threat intelligence, or security tooling is a strong plus) Strong backend experience with TypeScript and NestJS, including REST and GraphQL APIs Experience designing and building complex, data-heavy UIs using React (Next.js and Chakra UI are a plus) Hands-on experience with relational … skills Take ownership and enjoy driving work forward Care about quality, performance, and continuous improvement Tech you'll work with Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL Design: Figma (working from detailed designs and complex business requirements) Nice ...

Senior Full Stack Engineer

Hiring Organisation
Levy Global
Location
Nottingham, UK
Employment Type
Full-time
building enterprise SaaS products (background in cybersecurity, threat intelligence, or security tooling is a strong plus) Strong backend experience with TypeScript and NestJS, including REST and GraphQL APIs Experience designing and building complex, data-heavy UIs using React (Next.js and Chakra UI are a plus) Hands-on experience with relational … skills Take ownership and enjoy driving work forward Care about quality, performance, and continuous improvement Tech you'll work with Backend: TypeScript, NestJS, Sequelize, REST APIs, GraphQL, MySQL, NoSQL, Kafka Frontend: React, Next.js, TypeScript, Chakra UI, React Query, GraphQL Design: Figma (working from detailed designs and complex business requirements) Nice ...