13 developer jobs found in London

Internal Title: Senior Full Stack Developer Location: London, UK (Hybrid - typically 1-2 days per month in office) Contract: Permanent, Full-time OR Outside IR35 Contract, 6 months with view to extend Day Rate (contract): £500-550 per day Package (perm): £70,000 - £80,000 + 10% Bonus + 10% Shares + Benefits (see more below) About Appvia Appvia is a specialist cloud, platform, and solutions engineering consultancy, helping organisations modernise software systems, improve developer productivity, and adopt cloud-native practices that enable long-term, sustainable delivery. Our software engineering capability focuses on modern application development, domain-driven design, and improving delivery outcomes through better architecture, testing, and developer experience. We work across complex, high-impact environments in both the public and private sector, delivering solutions where quality, scalability, and reliability are critical. About The Role We're hiring...

Freelance: Full Stack Developer (Insurance Experience Required) Start Date: 20/07/26 Duration: 6 months (extension highly likely) IR35 Status: Outside Location: London (Fully Remote) Capacity: 40 hours per week About the Role We're looking for an experienced Full Stack Developer with Insurance domain expertise to support the development and scaling of a high growth digital platform within the insurance sector. You will work across both Front End and Back End layers, collaborating closely with product, design, and engineering teams to deliver robust, scalable, and high performance solutions. A key focus of the role will be building modern user interfaces (Vue.js) while contributing to Back End services, APIs, and architecture that support complex insurance workflows and data models. Key Responsibilities Design, develop, and maintain full stack applications across Front End and Back End layers. Build modern, responsive Front End applications using Vue.js. Develop and maintain...

Contract Outside IR35 Senior Data Engineer/Python/C# Developer - Energy Trading - London Up to £600 per day *Only candidates with Power/Gas/LNG/Oil/Ags/Metals commercial experience will be considered* Global Energy Trading company is embarking on a new Digitalisation Program, to transform how data is managed and utilised within the Energy business. The ambition is to deliver next generation of big data infrastructure, develop a range of data-driven, highly automated data pipelines to facilitate and enhance the trading business, as well as optimisation of physical assets. Working together with the Data Team, you will be developing the next generation of Data Infrastructure. Working with data pipelines, data management, and data analysis to help automate and optimise business. The role will require versatility as the individual will be required to work on Python and/or C# related projects in addition. The role Develop, construct, test and maintain data pipelines...

Join an industry-leading standards agency driving digital transformation with cutting-edge .NET technologies. Salary: £500 - 550 per day .NET Developer – Contract - £500-550/day (Outside IR35) We're working with an industry leading standards agency that are looking for a proficient .NET Developer to join them for an initial 6-month contract with over 18 months worth of work forecasted. This person will be tasked with working alongside an existing engineering team as part of an ongoing digital transformation. This role will fall outside IR35 and will be 100% remote with occasional travel optional for team meetings in their London office. Tech Stack: .NET C# SQL Web Forms Azure (Repos, Pipelines, Blob) Web API MVC MSTest Telerik Take the next step in your .NET development career with this exciting contract opportunity at a forward-thinking standards agency. Reference: 121250 INDTEDA

Full job description Join an industry-leading standards agency driving digital transformation with cutting-edge .NET technologies. Salary:  £500 - 550 per day .NET Developer – Contract - £500-550/day (Outside IR35) We're working with an industry leading standards agency that are looking for a proficient .NET Developer to join them for an initial 6-month contract with over 18 months worth of work forecasted. This person will be tasked with working alongside an existing engineering team as part of an ongoing digital transformation. This role will fall outside IR35 and will be 100% remote with occasional travel optional for team meetings in their London office. Tech Stack: .NET C# SQL Web Forms Azure (Repos, Pipelines, Blob) Web API MVC MSTest Telerik Take the next step in your .NET development career with this exciting contract opportunity at a forward-thinking standards agency....

PowerApps Developer (Contract) - SC Cleared/NPPV3 London (Hybrid - 3 days per week onsite) Initial 3 months - Strong Extension Potential Up to £520 per day (Outside IR35) We are currently seeking a highly capable PowerApps Developer to join a high-profile programme delivering secure, scalable digital solutions within a regulated public sector environment. This role sits within a fast-paced delivery team focused on modernising core services through the Microsoft Power Platform. This is an excellent opportunity for a contractor who thrives in secure environments and has experience building robust applications that meet stringent compliance and security standards. Key Requirements Strong hands-on experience with the Microsoft Power Platform, including: PowerApps (Canvas and Model-driven apps) Power Automate (workflow automation) Dataverse and data modelling Proven experience delivering enterprise-grade Power Platform solutions end-to-end Ability to integrate Power...

BI Developer A Lloyd's Insurer are looking for a skilled BI Developer to join the team to focused on a range of data projects including building reports in Power BI and some ETL/Data Pipeline work. Key Responsibilities Design, develop, and maintain interactive Power BI dashboards and reports. Build semantic models, data models, and DAX measures to support business reporting requirements. Develop and optimise ETL/ELT processes using Microsoft Fabric Data Factory and Dataflows Gen2. Create and maintain data pipelines, lakehouses, and warehouses within Microsoft Fabric. Required Skills & Experience Strong experience developing Power BI reports, dashboards, and semantic models. Advanced knowledge of DAX, Power Query, and data modelling techniques. Strong SQL development and database design skills. Experience building and maintaining ETL/ELT pipelines. Understanding of data warehousing concepts and dimensional modelling. Experience working within Azure and...

SnapLogic Integration Developer Hybrid - Remote first/circa 1 day per week onsite in Surrey Initial 6-month contract Circa £550 per day Outside IR35 We are looking for a Senior SnapLogic Integration Developer to join a global retail business on an initial 6-month contract. This role will focus on migrating Legacy integration workflows and selected MuleSoft interfaces into SnapLogic, while also helping to standardise the SnapLogic environment, build reusable integration patterns, and deliver robust end-to-end pipelines. We're looking for someone with strong commercial SnapLogic experience, a background in integration/Middleware migration, and solid technical skills across APIs, JSON, XML, SQL. Any exposure to AWS services (particularly S3/EventBridge/Transfer Family) would beneficial, but not essential. This is a hands-on role suited to someone who can work independently, translate Legacy logic into modern SnapLogic solutions, and engage confidently with...

Up to £600 per day Outside IR35 6 months contract with potential extensions Hybrid working in London – 2 days per week Be-IT is working with a leading insurance business on a new product modernization initiative. We’re seeking a Senior Business Systems Analyst to play a key role in shaping and delivering a software Target Operating Model (TOM). This is a hybrid role combining business analysis, systems analysis, solution design and delivery transformation. Key Responsibilities Define and document the software Target Operating Model (TOM) Translate high-level business concepts into clear, actionable solutions Collaborate with Product, Engineering and Configuration teams Support system integration and delivery across complex environments About You Proven experience as a Senior Systems Analyst in complex delivery environments You are not expected to be a developer but have good technical mindset and understanding Experience designing...

Dell Boomi Integration Consultant | £500- £550p/day Outside IR35 | 12 months initially | London/Birmingham Our client is looking for an experienced Dell Boomi Integration Consultant to support a large-scale enterprise integration programme. The role will focus on designing, developing and delivering integration solutions using Dell Boomi AtomSphere, connecting multiple enterprise platforms across cloud and on-premise environments. This is a hands-on technical position requiring strong Boomi development experience, API integration knowledge and the ability to support complex integration landscapes. Key Responsibilities: Design and develop scalable integration solutions using Dell Boomi AtomSphere, including process development, data mapping and profile configuration Create and manage secure Managed File Transfer (MFT) workflows to support high-volume and sensitive data transfers Publish, secure and govern REST/SOAP APIs through Boomi API Management,...

Dell Boomi Integration Consultant | £500-£550p/day Outside IR35 | 12 months initially | London/Birmingham Our client is looking for an experienced Dell Boomi Integration Consultant to support a large-scale enterprise integration programme. The role will focus on designing, developing and delivering integration solutions using Dell Boomi AtomSphere, connecting multiple enterprise platforms across cloud and on-premise environments. This is a hands-on technical position requiring strong Boomi development experience, API integration knowledge and the ability to support complex integration landscapes. Key Responsibilities: Design and develop scalable integration solutions using Dell Boomi AtomSphere, including process development, data mapping and profile configuration Create and manage secure Managed File Transfer (MFT) workflows to support high-volume and sensitive data transfers Publish, secure and govern REST/SOAP APIs through Boomi API Management, including gateway...

This role is delivered within secure environments. Candidates must be eligible for UK SC and DV clearance and hold UK citizenship. Opening: Join the Mission At ByDesign Secure, we believe that world-class security shouldn't be an afterthought—it should be the foundation. We are an independent, outputs-based consultancy dedicated to solving the most complex data assurance challenges in the UK public sector. Currently, we working on a landmark transformation of a cross-government secure IT system. This is an exciting opportunity to help architect a private cloud environment from the ground up and modernize the end-user services that power national decision-making. We don't believe in ʺbilling by the hourʺ or rigid hierarchies; we are a lean, expert team focused on delivering high-impact technical outcomes. If you are a self-starter who thrives on autonomy and wants to see your engineering or architectural decisions shape the future of sovereign security, we want to talk to you....

Senior Business Analyst – 6-month duration – London – Hybrid (2x a week) - £540 p/d (Outside IR35) – French Speaking Our leading international transportation organisation is looking for an experienced Senior Business Analyst to support their IT projects, working closely with business stakeholders and technical teams to analyse needs, define requirements, and support the delivery of effective solutions aligned with business objectives. The Senior Business Analyst will be responsible for gathering, analysing, and documenting business requirements, translating them into clear functional specifications, and acting as the key link between business users, IT teams, architects, developers, and external partners. The role will also involve analysing and improving business processes, supporting solution design, and contributing throughout the project lifecycle from requirements definition through to implementation. The right candidate will have extensive experience in...