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14 freelance software developer jobs found

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United Kingdom freelance software developer £400 - £500
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Contract Spy
Mar 16, 2026
Duration not stated
Delphi Developer at Test Yantra Software Solutions Private Limited, London, £500 per day
£500 per day
Contract Spy London, UK
Role Overview We are looking for a Senior Delphi Developer with deep expertise in Delphi 10.4 or later , strong understanding of software development life cycle (SDLC) , and hands-on experience in Oracle PL/SQL and RDBMS . The ideal candidate will be responsible for designing, developing, and maintaining enterprise-grade business applications, while also contributing to build automation and deployment processes using tools such as TeamCity and Octopus . This role requires excellent debugging skills, experience in developing custom controls, and collaboration with cross-functional teams to deliver robust and scalable software solutions. Experience: 10–14 years Key Responsibilities Design, develop, and maintain business applications using Delphi 10.4 or newer versions . Participate in the full Software Development Life Cycle (SDLC) — from requirements gathering to deployment and support. Configure and maintain automated build and deployment pipelines using...
Contract Spy
Mar 05, 2026
Duration not stated
D365 Developer at Test Yantra Software Solutions Private Limited, London, £380-£400 per day
£380 - £400 per day
Contract Spy London, UK
About the Role The Dynamics 365 Developer reports into the Complex Case Management Team DevOps Lead. The role will have a close working connection with IT teams, Partners/3rd parties, Operational Teams and Service Management. Responsibilities · Agile Practices: Integrate and support with agile based product development ceremonies such as sprint planning, standups, retrospectives and backlog grooming. · Solution Design and Development: Lead the design and development of custom solutions within Dynamics 365 and Power Platform, ensuring they meet business needs and align with best practices. · System Integration: Integrate Dynamics 365 with other systems and applications, ensuring seamless data flow and process automation. · Customization and Configuration: Customise and configure Dynamics 365 and Power Platform applications to meet specific business requirements. · Technical Leadership: Provide technical guidance and mentorship to junior developers and other team...
Contract Spy
Mar 05, 2026
Duration not stated
Fullstack Java Developer + React at Test Yantra Software Solutions Private Limited, Glasgow, £450-£500 per day
£450 - £500 per day
Contract Spy Glasgow, UK
Key Responsibilities: Maintain and enhance legacy UIs developed with extJS . Develop new UI features using React.js for modernised components. Write and maintain scalable backend code using Java (Spring preferred). Work with Oracle SQL for queries, stored procedures, and data analysis. Collaborate closely with technical leads, QA, and stakeholders to deliver reliable solutions. Ensure code quality, performance, and compliance with enterprise standards. Required Skills: Strong hands-on experience with Java development. Practical knowledge of extJS (legacy UI support). Proficient in React.js for newer screen development. Solid SQL expertise with Oracle (writing complex queries, debugging, data extraction). Experience working in a fast-paced, fully onsite delivery team. Excellent communication and problem-solving skills. Job Type: Freelance Pay: £450.00-£500.00 per day Experience: Java: 7 years (required) React: 5 years (required) Oracle: 6...
Contract Spy
Mar 05, 2026
Duration not stated
UI/UX Developer with GDS at Test Yantra Software Solutions Private Limited, London, £360-£400 per day
£360 - £400 per day
Contract Spy London, UK
Essential Skills & Experience: · Proven experience in UI/UX design for self-service platforms or similar digital products. · Proficiency in design tools such as Figma, Adobe XD, or Sketch. Strong knowledge of responsive design principles and web/mobile best practices. · Experience conducting user research and usability testing to drive design improvements. · Familiarity with accessibility standards (e.g., WCAG 2.1) and inclusive design principles. · Ability to work in an Agile environment, delivering iterative design solutions in collaboration with cross-functional teams. · Excellent communication skills to articulate design decisions and gather stakeholder feedback effectively Familiarity with GDS Service Standards and the Digital Service Assessment process Work with clients to design and develop digital services that are user-friendly, accessible, and compliant with GDS standards. Lead the development of service blueprints, user journeys, and wireframes. Advise...
Contract Spy
Mar 02, 2026
Duration not stated
Delphi Developer at Test Yantra Software Solutions Private Limited, London, £500 per day
£500 per day
Contract Spy London, UK
Role Overview We are looking for a Senior Delphi Developer with deep expertise in Delphi 10.4 or later , strong understanding of software development life cycle (SDLC) , and hands-on experience in Oracle PL/SQL and RDBMS . The ideal candidate will be responsible for designing, developing, and maintaining enterprise-grade business applications, while also contributing to build automation and deployment processes using tools such as TeamCity and Octopus . This role requires excellent debugging skills, experience in developing custom controls, and collaboration with cross-functional teams to deliver robust and scalable software solutions. Experience: 10–14 years Key Responsibilities Design, develop, and maintain business applications using Delphi 10.4 or newer versions . Participate in the full Software Development Life Cycle (SDLC) — from requirements gathering to deployment and support. Configure and maintain automated build and deployment pipelines using...
Contract Spy
Feb 26, 2026
Duration not stated
UI/UX Developer with GDS at Test Yantra Software Solutions Private Limited, London, £360-£400 per day
£360 - £400 per day
Contract Spy London, UK
Essential Skills & Experience: · Proven experience in UI/UX design for self-service platforms or similar digital products. · Proficiency in design tools such as Figma, Adobe XD, or Sketch. Strong knowledge of responsive design principles and web/mobile best practices. · Experience conducting user research and usability testing to drive design improvements. · Familiarity with accessibility standards (e.g., WCAG 2.1) and inclusive design principles. · Ability to work in an Agile environment, delivering iterative design solutions in collaboration with cross-functional teams. · Excellent communication skills to articulate design decisions and gather stakeholder feedback effectively Familiarity with GDS Service Standards and the Digital Service Assessment process Work with clients to design and develop digital services that are user-friendly, accessible, and compliant with GDS standards. Lead the development of service blueprints, user journeys, and wireframes. Advise...
Contract Spy
Feb 26, 2026
Duration not stated
Fullstack Java Developer + React at Test Yantra Software Solutions Private Limited, Glasgow, £450-£500 per day
£450 - £500 per day
Contract Spy Glasgow, UK
Key Responsibilities: Maintain and enhance legacy UIs developed with extJS . Develop new UI features using React.js for modernised components. Write and maintain scalable backend code using Java (Spring preferred). Work with Oracle SQL for queries, stored procedures, and data analysis. Collaborate closely with technical leads, QA, and stakeholders to deliver reliable solutions. Ensure code quality, performance, and compliance with enterprise standards. Required Skills: Strong hands-on experience with Java development. Practical knowledge of extJS (legacy UI support). Proficient in React.js for newer screen development. Solid SQL expertise with Oracle (writing complex queries, debugging, data extraction). Experience working in a fast-paced, fully onsite delivery team. Excellent communication and problem-solving skills. Job Type: Freelance Pay: £450.00-£500.00 per day Experience: Java: 7 years (required) React: 5 years (required) Oracle: 6...
Contract Spy
Mar 20, 2026
Duration not stated
Full Stack Python & React at Test Yantra Software Solutions Private Limited, Sheffield, £500 per day
£500 per day
Contract Spy Sheffield, UK
Role Overview We are seeking a skilled Full-Stack Software Engineer with exclusive expertise in React for frontend development and Python for backend development. The role focuses on building scalable, secure, and high performance web applications while working closely with product, design, and platform teams. Key Responsibilities Frontend (React) Design and develop responsive, modular, and accessible user interfaces using React Build reusable React components, shared libraries, and frontend design systems Manage complex client side state and optimize frontend performance Integrate frontend applications with REST APIs Ensure high standards of UX, accessibility, and cross browser compatibility Backend (Python) Design and implement scalable backend services using Python Develop RESTful APIs using Python frameworks such as Django / FastAPI / Flask Handle authentication, authorization, and secure data...
Contract Spy
Mar 16, 2026
Duration not stated
Full Stack Python & React Engineer at Test Yantra Software Solutions, Sheffield, £500 per day
£500 per day
Contract Spy Sheffield, UK
Role Overview We are seeking a skilled Full-Stack Software Engineer with exclusive expertise in React for frontend development and Python for backend development. The role focuses on building scalable, secure, and high performance web applications while working closely with product, design, and platform teams. Key Responsibilities Frontend (React) Design and develop responsive, modular, and accessible user interfaces using React Build reusable React components, shared libraries, and frontend design systems Manage complex client side state and optimize frontend performance Integrate frontend applications with REST APIs Ensure high standards of UX, accessibility, and cross browser compatibility Backend (Python) Design and implement scalable backend services using Python Develop RESTful APIs using Python frameworks such as Django / FastAPI / Flask Handle authentication, authorization, and secure data...
Contract Spy
Mar 16, 2026
Duration not stated
Golang - Software Engineer at Test Yantra Software Solutions Private Limited, Sheffield, £400-£500 per day
£400 - £500 per day
Contract Spy Sheffield, UK
Key Accountabilities Responsibilities will include: · Design, develop and maintain highly available, secure, and performant backend REST API services along with frontend client using Python , Golang, Docker and Cloud-Native services . · Implement and manage database schema changes using Liquibase , ensuring alignment with compliance and audit standards. · Collaborate closely with Architecture and DevOps teams to enhance, maintain and mature Product capabilities/features. · Perform root cause analysis and implement solutions for incidents and performance bottlenecks. Qualifications and experience The ideal candidate for this role will have the below experience and qualifications: · Bachelor’s or Master’s degree in Computer Science or equivalent industry experience. · Comes from Software Engineering background with infrastructure experience. · 5+ years of development experience...
Contract Spy
Mar 13, 2026
Duration not stated
Full Stack Python & React at Test Yantra Software Solutions Private Limited, Sheffield, £500 a day
£500 per day
Contract Spy Sheffield, UK
Role Overview We are seeking a skilled Full-Stack Software Engineer with exclusive expertise in React for frontend development and Python for backend development. The role focuses on building scalable, secure, and high performance web applications while working closely with product, design, and platform teams. Key Responsibilities Frontend (React) Design and develop responsive, modular, and accessible user interfaces using React Build reusable React components, shared libraries, and frontend design systems Manage complex client side state and optimize frontend performance Integrate frontend applications with REST APIs Ensure high standards of UX, accessibility, and cross browser compatibility Backend (Python) Design and implement scalable backend services using Python Develop RESTful APIs using Python frameworks such as Django / FastAPI / Flask Handle authentication, authorization, and secure data flows Work...
Contract Spy
Mar 02, 2026
Duration not stated
Golang - Software Engineer at Test Yantra Software Solutions Private Limited, Sheffield, £400-£500 per day
£400 - £500 per day
Contract Spy Sheffield, UK
Key Accountabilities Responsibilities will include: · Design, develop and maintain highly available, secure, and performant backend REST API services along with frontend client using Python , Golang, Docker and Cloud-Native services . · Implement and manage database schema changes using Liquibase , ensuring alignment with compliance and audit standards. · Collaborate closely with Architecture and DevOps teams to enhance, maintain and mature Product capabilities/features. · Perform root cause analysis and implement solutions for incidents and performance bottlenecks. Qualifications and experience The ideal candidate for this role will have the below experience and qualifications: · Bachelor’s or Master’s degree in Computer Science or equivalent industry experience. · Comes from Software Engineering background with infrastructure experience. · 5+ years of development experience...
Contract Spy
Mar 02, 2026
Duration not stated
Kakfa Architect at Test Yantra Software Solutions Private Limited, Sheffield, £500-£580 per day
£500 - £580 per day
Contract Spy Sheffield, UK
Knowledge & Experience / Qualifications · Knowledge of Kafka data pipelines and messaging solutions to support critical business operations and enable real-time data processing. · Monitoring Kafka performance, enhancing decision making and operational efficiency · Collaborating with development teams to integrate Kafka applications and services. · Maintain an architectural library for Kafka deployment models and patterns · Helping developers to maintain Kafka connectors such as JDBC, MongoDB and S3 connectors, along with topics schemas, to streamline data ingestion from databases, NoSQL data stores and cloud storage, enabling faster data insight. Job Type: Freelance Pay: £500.00-£580.00 per day
Contract Spy
Mar 02, 2026
Duration not stated
Senior Solidity Engineer at Test Yantra Software Solutions Private Limited, London, £400 per day
£400 per day
Contract Spy London, UK
Must have skills: Demonstrable experience with Solidity. Strong understanding of blockchain security practices and potential vulnerabilities. Proficiency in Hardhat and Foundry. Experience with Solidity security testing tools like Slither, Mythril, Echidna Practical experience with scripting languages like Javascript or Typescript. Ability to craft unit, integration, fork, and invariant tests, ensuring code longevity. Demonstrable aptitude for best development practices, data structures, algorithms, and methodologies. Bachelor's degree in Computer Science, Engineering, or a related STEM discipline. Excellent debugging and troubleshooting skills. Strong written and verbal communication skills. Self-motivated with the ability to work in a fast-paced, evolving environment. Proficient communication skills in English. Development background in sectors such as banking, finance, or trading, paired with a comprehensive grasp of financial instruments and systems. Bonus...
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