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        1 Permanent API job in Holloway (N19) + 20 miles

        Python Software Engineer

        SF Recruitment (Tech)
        Holloway, N19
        £55k - 65k per year + fully remote
        Python, Flask ,Azure, MySQL, API, Django, FastAPI
        Python, Flask ,Azure, MySQL, API, Django, FastAPI
        NEW

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        Software Engineer

        Oscar Associates (UK) Limited
        Camden, NW1
        £50000 - £60000 per annum
        Now they're looking for a Software Engineer to join their small but mighty technical team. This role is perfect for a software engineer who wants more than just writing code. Central London (Hybrid - ideally 2 days onsite, flexible)?? £50,000 - £60,000 + tailored bonus + benefits - The Opportunity - How often do you get the chance to join a business on the ground floor, where your code, your ideas, and your decisions directly shape the future of an entire industry? We're partnered with a high-growth PropTech firm that is redefining how property is bought, sold, managed, and experienced across the UK. They're not just another start-up tinkering on the edges of the market - they've already secured partnerships with major national brands and are scaling fast, with ambitious product launches ahead. This isn't just another dev role - it's
        Now they're looking for a Software Engineer to join their small but mighty technical team. This role is perfect for a software engineer who wants more than just writing code. Central London (Hybrid - ideally 2 days onsite, flexible)?? £50,000 - £60,000 + tailored bonus + benefits - The Opportunity - How often do you get the chance to join a business on the ground floor, where your code, your ideas, and your decisions directly shape the future of an entire industry? We're partnered with a high-growth PropTech firm that is redefining how property is bought, sold, managed, and experienced across the UK. They're not just another start-up tinkering on the edges of the market - they've already secured partnerships with major national brands and are scaling fast, with ambitious product launches ahead. This isn't just another dev role - it's
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        FEATURED

        Python Software Engineer Databricks

        Client Server
        Shoreditch, E1
        £80000 - £90000 per annum + bonus + benefits
        As a Python Software Engineer you will design and develop data centric backend services for the core platform with a focus on Python coding and building FastAPIs within an Azure environment with Databricks. Python Software Engineer / Developer (Azure Databricks FastAPI) London to £90k - Are you a data centric Python Software Engineer? Apply now to find out more about this Python Software Engineer / Developer opportunity. * You have strong Python software engineering skills - You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses on developing a complex SaaS calculation platform for rapidly growing Cybersecurity insurance markets. You'll participate in the desig
        As a Python Software Engineer you will design and develop data centric backend services for the core platform with a focus on Python coding and building FastAPIs within an Azure environment with Databricks. Python Software Engineer / Developer (Azure Databricks FastAPI) London to £90k - Are you a data centric Python Software Engineer? Apply now to find out more about this Python Software Engineer / Developer opportunity. * You have strong Python software engineering skills - You could be progressing your career in a senior, hands-on role at a fast growing, global Insurance Underwriting technology provider that focusses on developing a complex SaaS calculation platform for rapidly growing Cybersecurity insurance markets. You'll participate in the desig
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        NEWPREMIUM
        Job Title: Python Developer Our client within financial services is looking to hire a Python Developer to work as a contractor on a number of middle office and risk initiatives. This will be a multi year opportunity for someone with a strong background as a Python Developer and has worked at a financial services company previously. Job Description - Some of the projects you'll support are as follows; * Liquidity reporting system upgrades * Collateral Management platform optimisation. * Securities Lending programme and system upgrades. * Risk systems support * Developing large, business critical solutions * Supporting existing functionality and expanding upon it for new feature requests - This will be long term contracting, with the role being based in Bromley and they'll require 3 days a week onsite. The rates can pay
        Job Title: Python Developer Our client within financial services is looking to hire a Python Developer to work as a contractor on a number of middle office and risk initiatives. This will be a multi year opportunity for someone with a strong background as a Python Developer and has worked at a financial services company previously. Job Description - Some of the projects you'll support are as follows; * Liquidity reporting system upgrades * Collateral Management platform optimisation. * Securities Lending programme and system upgrades. * Risk systems support * Developing large, business critical solutions * Supporting existing functionality and expanding upon it for new feature requests - This will be long term contracting, with the role being based in Bromley and they'll require 3 days a week onsite. The rates can pay
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        Senior Full Stack Engineer - Python/React

        TURLEYWAY LIMITED
        The City, EC4N 7BE
        From £80,000 to £250,000 per annum
        Proficiency in Python back end development, and Typescript (React) * Proven track record of owning and working on end-to-end full-stack applications. This engineer will have the opportunity to work on a wide variety of technology initiatives in a distributed computing, low-latency and high-throughput application environment. TurleyWay are pairing with a globally renowned Quantitative trading firm to support them in growing their Quantitative Data Systems engineering team. The firm are well established and in a huge growth phase. Today, the firm has more than 1,500 people around the globe and an expansive engineering team. This team, Quantitative Systems is a global team that supports the design and maintenance of the companys largest computer infrastructure. You will be working on gre
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        This is a fantastic opportunity to work a remote Senior Fullstack Developer for a major pharmaceutical company on a long term contract, outside IR35. * Python * React * AI (desirable - If you do have the relevant experience for this remote, outside IR35 Senior Fullstack Developer role, please do send through your CV. * Typescript * AWS * SQL * Kubernetes (desirable)
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        Junior Full Stack Python Developer - AI/LLMs - London (Hybrid, 1 day per week) - Up to £45k - Are you a Junior Full Stack Developer with a passion for Python, AI, and cutting-edge tech? Keywords: Python, JavaScript, Node.js, React, LLMs, LangChain, Cloud (GCP/AWS), SQL, NoSQL, REST APIs, Full Stack, AI - You'll work closely with the Founder and another experienced Developer, gaining hands-on experience with AI/LLMs, while building innovative products that will disrupt the market. * Strong foundation in Python This is your chance to join a brand-new, well-funded eCommerce start-up right at the beginning of its scale-up journey. Backed by recent investment and led by a proven entrepreneur with a track r
        Junior Full Stack Python Developer - AI/LLMs - London (Hybrid, 1 day per week) - Up to £45k - Are you a Junior Full Stack Developer with a passion for Python, AI, and cutting-edge tech? Keywords: Python, JavaScript, Node.js, React, LLMs, LangChain, Cloud (GCP/AWS), SQL, NoSQL, REST APIs, Full Stack, AI - You'll work closely with the Founder and another experienced Developer, gaining hands-on experience with AI/LLMs, while building innovative products that will disrupt the market. * Strong foundation in Python This is your chance to join a brand-new, well-funded eCommerce start-up right at the beginning of its scale-up journey. Backed by recent investment and led by a proven entrepreneur with a track r
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        Python Developer (m/f/d)

        SEFE MARKETING & TRADING LIMITED
        NW1, North West London
        To define
        We are searching for a Python Developer to join SEFE in London. * Application Development: Design, develop, and maintain in-house applications for the Derivatives trading desk using Python, ensuring efficient, scalable, and reliable solutions. * Proficiency in Python (3.10+) SEFE, an international energy company, ensures the security of supply and drives the decarbonisation of its customers. SEFEs activities span the energy value chain, from origination and trading to sales, transport and storage. Through its decades-long expertise in trading and the development of its LNG business, SEFE has become one of the most important suppliers to industrial customers in Europe, with an annual sales volume of 200 TWh of gas and power. Its 50,000 customers range from small businesses to municipalities and multinational organisati
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        Software Engineer

        Searchability (UK) Ltd
        RG17, Hungerford
        £40000 - £65000 per annum
        Opportunity to join a global SaaS company * Salary up to £65k * Hybrid working from Hungerford HQ (3 days onsite) * Tech stack: C#, ASP.NET, .NET CORE, SQL, Azure * Clear career progression into the leadership team * Opportunities to work with technologies such as React and .NET MAUI - We're a global SaaS company offering a cloud-based platform. Headquartered in Hungerford, we also have offices across the UK and internationally. We pride ourselves on being a great place to work, with a modern, forward-thinking approach to workplace flexibility and employee wellbeing. WHAT YOU'LL BE DOING - You'll be responsible for managing multiple concurrent projects, ensuring timely delivery, maintaining high code quality, and following established development standards. This role involves defining objectives, completing programming tasks, and developing applications and fixes in l
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        Software Engineer

        Experis UK
        London
        £65000 - £90000 per annum + Excellent Benefits
        Instead, we want highly skilled software engineers with strong experience in at least one modern programming language and the ability to quickly adapt and learn new ones. If you're a high-calibre engineer seeking to apply your skills to projects that truly make a difference, we want to hear from you. £65,000 - £90,000 + Benefits - We are representing a specialist SME consultancy partnered with a leading AI and technology firm, delivering mission-critical solutions to the UK Defence and Intelligence community. This is a unique opportunity to work on a cutting-edge new platform that is shaping the future of national security. The role is language-agnostic - we're not looking for expertise in one specific technology stack. You will be working at the forefront of innovation on programmes of national importance, collaborating with some of
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        Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid * 5+ years of Python development experience, ideally in financial services or commodities - Key Responsibilities - o Historical index back-testing - o Daily pricing and index computation - o Weighting and rebalancing logic - o Attribution and decomposition analytics * Build robust APIs using FastAPI or Flask * Collaborate directly with business users to gather requirements and iterate quickly * Implement testing, versioning, and data validation processes * Ensure integration with internal data sources and reporting tools - Required Skills * Strong proficiency in Pandas, NumPy, and time-series data manipulation * Proven experience with FastAPI or Flask * Familiarity with large datasets and real-time data pipelines * Excellent debugging, profi
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        Job Title: Full Stack Engineer with Node.js and Python * Expertise in ReactJs, TypeScript, JavaScript, NodeJS, Python, Postgres * Mentor Engineers and Associate Engineers Duration: until 30 January 2026 - Location: Remote working - Onsite required in Croydon 2 days per month - Clearance: Active SC clearance required - Rate: £475 per day - PAYE via Umbrella only * Familiarity with Docker, Kubernetes, AWS, CI/CD * Be a technical specialist for one or more products or services * Develop features, resolve bugs, elaborate stories, write and improve documentation * Manage and take part in in-hours support (triage, incidents, bugfixes) * Lead the design of components or modules in a product or service * Work with Engineering
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        We are seeking an experienced Software Engineer to join a global technology team within a leading energy trading business. * 8+ years of software development experience. * Strong knowledge of software design principles and patterns. JavaScript React Developer - London (Hybrid) 6 month contract - Rates: Negotiable - Overview - This role is suited to a developer with strong front-end expertise, solid cloud experience, and a track record of delivering business-critical applications in fast-paced environments. The ideal candidate will have excellent problem-solving skills, a user-focused mindset, and the ability to thrive in Agile delivery teams. Key Responsibilities * Design and build modern web applications using React, TypeScript, CSS, Jest/Vitest, Webpack, and Ag Grid. * Apply modern JavaScript coding, testing, debugg
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        Python Developer - sought by leading investment bank based in Canary Wharf - Contract - Hybrid * 5+ years of Python development experience, ideally in financial services or commodities - Key Responsibilities - o Historical index back-testing - o Daily pricing and index computation - o Weighting and rebalancing logic - o Attribution and decomposition analytics * Build robust APIs using FastAPI or Flask * Collaborate directly with business users to gather requirements and iterate quickly * Implement testing, versioning, and data validation processes * Ensure integration with internal data sources and reporting tools - Required Skills * Strong proficiency in Pandas, NumPy, and time-series data manipulation * Proven experience with FastAPI or Flask * Familiarity with large datasets and real-time data pipelines * Excellent debugging, profi
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        Senior Developer (m/f/d)

        SEFE MARKETING & TRADING LIMITED
        NW1, North West London
        To define
        The Senior Developer has multiple responsibilities within the organization. It is expected that a Senior Developer will work on a portfolio of different software products during their time in the organization and will coach different individuals in their career. * Understand the technical needs/dependencies with other applications/teams and manage these with the Lead Developers and Architects to ensure the correct technical solutions are implemented - Their?time is broken down to software delivery and junior developer coaching responsibilities. * Demonstrated technical authority and leadership, with experience mentoring or coaching junior developers. SEFE, an international energy company, ensures the security of supply and drives the decarbonisation of its customers. SEFEs activities
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        Software Engineer

        Avd Appoint Ltd
        WC2, Central London
        £50000 - £70000 per annum + Benefits
        I am currently recruiting for a Software Engineer to work for a fascinating company within the space domain that are pushing the boundaries of technology based in London. To support the business with its future plans as well as enabling them to be able to deliver upon their current project demands they have the need to appoint another Software Engineer on a permanent basis. In this role as a Software Engineer, you will be responsible for coding in Rust and C/C++. * At least 2 years' commercial experience as a Software Engineer or similar unless you have completed a PhD - Initially this will be on the ground software to integrate with mission control software, but this will diversify in time to be more focused on the flight dynamics element. * Experience developing
        I am currently recruiting for a Software Engineer to work for a fascinating company within the space domain that are pushing the boundaries of technology based in London. To support the business with its future plans as well as enabling them to be able to deliver upon their current project demands they have the need to appoint another Software Engineer on a permanent basis. In this role as a Software Engineer, you will be responsible for coding in Rust and C/C++. * At least 2 years' commercial experience as a Software Engineer or similar unless you have completed a PhD - Initially this will be on the ground software to integrate with mission control software, but this will diversify in time to be more focused on the flight dynamics element. * Experience developing
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        Senior Python Developer

        Hays
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        £600.0 - £700.0 per day + Up to £700pd Umbrella
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        Senior Fullstack Javascript Developer

        83zero Limited
        Grays Inn, WC2A 1EL
        £71000 - £82000 per annum + Pension 6% , PH, LA
        Senior Full Stack JavaScript Developer Salary: £77,000 - £82,000 pa (depending on experience) plus benefits, perks and healthcare options - We are on the lookout for a talented and motivated Full Stack JavaScript Developer to join a dynamic Engineering team. * Proven experience in full stack JavaScript development, with a strong focus on Node.js and server-side development. * A track record in a lead or senior developer role, with experience of mentoring and guiding development teams. * Provide technical leadership and mentorship to a team of developers, guiding them through collaboration, innovation and facilitation to ensure best practices and high-quality code. * Collaborate with a
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        Senior/Lead Hands on Full Stack Developer - React / Python Looking for a Full Stack developer who loves working across the stack - React on the front end, Python on the back end. * Strong React & Python skills £110,000+ Equity | Full-Time | Start-up * Build responsive UIs in React * Develop APIs & services in Python (either Django/Flask/FastAPI) * Help shape our tech stack London | Hybrid (3days in the office and 2 days from home) We're a high-growth start-up building a leading healthcare! * Own features end-to-end * API & database experience * A proa
        Senior/Lead Hands on Full Stack Developer - React / Python Looking for a Full Stack developer who loves working across the stack - React on the front end, Python on the back end. * Strong React & Python skills £110,000+ Equity | Full-Time | Start-up * Build responsive UIs in React * Develop APIs & services in Python (either Django/Flask/FastAPI) * Help shape our tech stack London | Hybrid (3days in the office and 2 days from home) We're a high-growth start-up building a leading healthcare! * Own features end-to-end * API & database experience * A proa
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        Senior Software Engineer

        Platform Recruitment Limited
        EC2M, City of London
        Up to £160,000 per annum
        Title: Senior Software Engineer (Compilers) * 6 years+ as a compiler engineer Company: HPC R&D - Location: London (primarily remote) Pay: Up to £160,000 + bonus + benefits - An advanced HPC R&D firm, looking to expand the UK compiler team. Most of the team are ex-Big-Tech, ex-FAANG or ex-Chip firms. They joined because they get more flexibility and have more challenging/interesting work to do as the team is significantly smaller, with highly technical leadership. If you want to work alongside some of the brightest, most enthusiastic people in the industry, this may be worth exploring. You will be a significant hire and will own much of the development of a cutting-edge compiler development project. Significant hires have already been made in the team to support this role. Mostly LLVM based, it is important you also have experience wor
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        Backend Software Engineer Rust - Trading

        Client Server
        W1W, West London
        £120000 - £180000 per annum + bonus + benefits
        As a Backend Software Engineer you will design and develop backend services for real-time risk, pricing, trading engines and market making systems, working across the full software development lifecycle using Rust. Backend Software Engineer / Developer (Rust HFT) London / WFH to £180k - You could be progressing your career in a senior, hands-on Backend Software Engineer at a hugely profitable High Frequency Trading firm that specialise in crypto markets. Apply now to find out more about this Senior Backend Software Engineer / Developer (Rust High Frequency Trading) opportunity. Do you have expertise with backend software engineering within trading / finance environments? * You have strong backend OOP, multithreaded
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        NEWPREMIUM

        Principal Software Engineer

        Rise Technical Recruitment Limited
        London
        £100000 - £115000.00 per annum + Progression + Training + Pension
        An excellent opportunity awaits an experienced software engineer with strong Java and Python skills for a hands-on technical leadership position within an innovative ML-driven SaaS firm, in a role offering technical growth, variety and strong development opportunities. *Experienced hands-on software engineer with strong Java and Python skills - The ideal candidate is an experienced engineer with strong Java and Python expertise, looking for a hands-on leadership position. London (Office Based) £100,000 - £115,000 + Progression + Training - The company is a profitable and renowned business delivering a cutting-edge AI-driven platform that helps optimise business processes in heavy industries. In this role, you will take on a hands-on technical leadership position focused on the full st
        An excellent opportunity awaits an experienced software engineer with strong Java and Python skills for a hands-on technical leadership position within an innovative ML-driven SaaS firm, in a role offering technical growth, variety and strong development opportunities. *Experienced hands-on software engineer with strong Java and Python skills - The ideal candidate is an experienced engineer with strong Java and Python expertise, looking for a hands-on leadership position. London (Office Based) £100,000 - £115,000 + Progression + Training - The company is a profitable and renowned business delivering a cutting-edge AI-driven platform that helps optimise business processes in heavy industries. In this role, you will take on a hands-on technical leadership position focused on the full st
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