19 of 19 Contract Developer Jobs in the City of London

Develop backend systems using Python, FastAPI, and related frameworks Manage data with SQL Alchemy, working across PostgreSQL, CosmosDB, and Redis Build scalable cloud solutions using Azure PaaS services (App Services, Function Apps, API Management, etc.) Design and implement RESTful APIs More ❯

PHP Architect/Lead Developer Location: 100% Remote Contract: 6-month contract (potential extension) Start Date: ASAP About the Role We're seeking an experienced PHP Architect/Lead Developer to join our agile, forward-thinking technology team. Our in-house platforms power everything from industry-leading e-learning solutions to highly integrated office logistics, all hosted on AWS. In … and craft raw SQL queries for performance. Translate complex business requirements into scalable, maintainable technical solutions. Build and maintain client and management reporting tools. Contribute to the evolution of developer tools, CI/CD pipelines, and AWS-based architectures. Mentor and provide technical guidance to less experienced developers. Support a global user base and ensure high-quality, well-documented code. … to shape the future of our platforms? Send your CV and a short cover letter highlighting relevant experience to (url removed) with the subject line "PHP Architect/Lead Developer - Contract". Randstad Technologies is acting as an Employment Business in relation to this vacancy. More ❯

OpenLink Endur Developer for leading financial services client in London. Contract and hybrid working. Key Responsibilities Develop, maintain, and enhance custom modules and extensions within Endur and .NET. Build and support interfaces and integrations between Endur and internal systems. Provide technical and functional support to traders, risk managers, and operations teams. Work with business analysts to deliver high-quality technical More ❯

Senior C# Developer - Commodities Trading - Outside IR35 Exciting opportunity for an experienced senior developer to build on their experience in Commodities or similar trading development role in this successful Commodities Trading company. £750 - 800 per day Outside IR35 The Senior C# Developer will have significant prior experience as a Senior Software Engineer/Senior Developer working as C# Developer in More ❯

SC Cleared Salesforce Developer 6 Months Predominantly remote (Maximum of 1-2 days per month on site) £650 per day (Inside IR35) My client, a government body, are looking for an SC Cleared Salesforce Developer to join their fast-paced team on an initial 6-month contract. ***Please note - Due to the nature of the client, the selected candidate MUST … HAVE Active SC Clearance and be a sole British National*** As part of our continuous growth, we are seeking a Salesforce Developer to join our Salesforce Delivery team in London, focusing on clients in the Public Sector Domain. The Salesforce Developer builds on and extends the capabilities of the Salesforce platform. You will use the full arsenal of tools and … control of CI/CD deployment pipeline Jira/Confluence or equivalent workflow/online documentation Ideally qualified with the following certifications: Salesforce Certified Platform Administrator Salesforce Certified Platform Developer Salesforce Certified Platform App Builder Salesforce Accredited Professional: Public Sector Solutions What experience you'll bring: Strong Salesforce Industry development experience preferred. Public Sector Solutions preferred & Omnistudio must Experience in More ❯

My Financial Services client is seeking to recruit a C# .NET Developer on an initial 6 month contract based in London. It is hybrid and will require 3x days onsite per week. Essential: Strong background in C# programming and .Net technologies Strong Windows background Strong experience with relational databases and SQL Proven experience in continuous improvement of areas of focus More ❯

developing great software in Python and an interest in adopting cutting-edge technology. In order to be suitable for this Lead Software Engineer role you must be an accomplished developer with a passion for technology and desire to mentor a team. You will hold proven experience delivering SaaS projects in Python and will be keenly interested in AI and ML. … Experience with AWS and data engineering would be advantageous to your application. In this role of significant responsibility, you will be both a Lead Developer and guide 2 in-house developers and an offshore team. You will act as a technical authority on software written in Python, lead architectural discussions, code, ensure technical quality and deliver complex software projects. You More ❯

Tableau Developer Hybrid Working - London - 1-2 days a week on site. Financial Services Lorien's leading banking client is looking for a Tableau Developer to join the expanding team on a long-term project. This role is based in London. This role will be Via Umbrella. Working in a Hybrid Model of 1-2 days a week on site. More ❯

transaction online gaming websites. You will be required to produce robust, clear and polished code to tight time-scales. This is an excellent opportunity for a highly-motivated Java developer to be involved in the delivery of new customer products and/or customer roadmaps. The candidate will be a key member of an agile development team comprising a Product More ❯

Salesforce Developer/Solution Architect Location: London/Sheffeild, UK Contract Type: 6- months contract Day Rate: £500 to £545/a day Umbrella About the Role We are looking for a Salesforce Developer/Solution Architect to design, develop, and deliver innovative solutions across our Salesforce platform. You will work closely with Product, Change, IT teams, and external vendors More ❯

/Power Platform developer 6 months Remote Inside IR35 - Umbrella only Job purpose To lead the design, development, and deployment of enterprise-grade solutions using Microsoft Power Platform. This role demands deep technical expertise, agile delivery experience, and a strong focus on secure, scalable architecture Skills required Expert PowerPlatform developer (PowerApps, PowerAutomate, PowerPages, Dataverse, PowerBI) Experience in full development life More ❯

skilled interim and temporary professionals, fostering workplaces where everyone can contribute and succeed. On behalf of our client, Royal London. We are looking for a Dynamics 365 & Power Platform Developer for a 6 Months Contract based in London (Hybrid 2-3 days per week in the office) Job description - the role Purpose of the role: As Dynamics 365 & Power Platform … Developer you will focus on building, implementing, testing, and maintaining CRM solutions. You'll play a key part in expanding our client use of the Power Platform, including Power Apps, Power Automate, and Power BI. This role blends technical development with elements of business analysis. What you'll do: Design, develop, and maintain CRM solutions using Dynamics 365 (Customer and More ❯

Job Title: API Developer Location: London - 2 days per week in the office Salary/Rate: Up to £450 Per Day (Inside IR35) Start Date: 17/11/2025 Job Type: Contract (6 months) Role Overview: We have an exciting opportunity for a skilled API Developer to join an established technology team on a six-month contract. The successful More ❯

Axway API Developer (SC Cleared) ?? 6 months contract Inside IR35 ?? £500 to £650 a day ??Remote Working (UK based) A top-tier defense organization is looking for an experienced Axway API Developer/Administrator to join their team on a 6-month contract. You will contribute to a large government gateway project, and active SC clearance is required. The main More ❯

SPM ServiceNow Developer Our client, a leading global supplier for IT services, requires an experienced SPM ServiceNow Developer. This is a fully remote role. This is a 6+ month temporary contract to start ASAP Day rate: Competitive Market rate In this role, the ServiceNow Developer will be responsible for developing and maintaining the ServiceNow platform primarily within the SPM module More ❯

Job Title: WebMethods Developer Location: Remote Duration: 6 Months IR35 Status: Inside IR35 - Umbrella Only Clearance : SC Clearance or SC eligibility will be considered Job Description: We are seeking a skilled WebMethods Developer for a 6-month contract position to support the development, configuration, and optimization of integration solutions in a remote working environment. The successful candidate will work with More ❯

Power App/Power Automate Developer Remote 8 months Active SC security clearance required Skills/experience required Designing, developing, and maintaining business applications and automation solutions using Microsoft Power Platform tools, Power Apps, Power Automate, Power BI, and Dataverse. Build custom apps using Power Apps (Canvas & Model-driven). Automate workflows with Power Automate. Create dashboards and reports using More ❯

My Financial Services client is seeking to recruit an Oracle Data Warehouse/Oracle Developer on an initial 6 month contract based in London. It is hybrid and will require 3x days onsite per week. You will be responsible for the design, optimize, and maintain Oracle-based data warehouse solutions to ensure high performance, scalability, and alignment with business intelligence More ❯

PPA Modeller/Developer Key Responsibilities Develop and model physical power products within Endur, with strong experience in Power Purchase Agreement (PPA) setups. Configure and manage power curves in Endur, including shaping, interpolation, and integration with market data. Apply a solid understanding of power market fundamentals - generation, load forecasting, and settlement processes. Work across technical and functional teams to translate More ❯