Freelance Software Engineer jobs in Clerkenwell

Senior Software Engineer Node.js / AWS / React London (Hybrid, 3 days onsite) Are you the kind of Senior Software Engineer who enjoys taking something fast-and-scrappy and turning it into something scalable, elegant, and genuinely robust? This is a chance for a Senior Software Engineer to join a small, but ambitious tech-for-good / IoT startup based in the London City Centre thats building...

You will have a learning and development budget to support this. Python, Java, TypeScript, JavaScriptReact, Angular, ReactKubernetes (k8s) DockerAWS, AzureElasticsearch, MERN, Neo4JBenefitsExcellent company benefits including significant pension contributions, BUPA, equity and training allowance.

You will contribute to building the Salt platform and supporting systems, working with modern technologies, for example TypeScript, Python, Java, AWS, Snowflake and AI-powered tools.

You will ship features, learn fast, and collaborate with a product design-led team focused on excellent user experience.

You will help qualify components for some of the most sophisticated systems in the world, collaborating with dedicated multidisciplinary teams in a hands on environment. This role is ideal for an engineer who enjoys problem solving, testing complex technology and ensuring the highest levels of software quality.

You will play a critical role in building and evolving systems within a regulated payments / financial services environment, balancing engineering excellence and platform resilience. Key Responsibilities Engineering Leadership & Strategy - Own the software engineering strategy, aligned with business, product and regulatory objectives.

Mid-Level Software Engineer (Java / AWS) Contract | £350 per day Inside IR35 | Hybrid (1 day pw London) We’re supporting a large, well-established UK organisation on a key digital delivery programme and are looking for two mid-level Software Engineers to join an existing engineering team. This is a hands-on development role suited to engineers who enjoy writing clean, testable code, working...

Please find the Job Description:- Role: Senior Java Developer Location: Farnborough/UK (Hybrid) Hybrid mode of work Exp range:8+ years Mandatory skills: Java Springboot, Java 17/11, AWS, Pipeline, Financial domain, Spark. JD: Java Tech Lead job involves leading and mentoring a Java development team, analyzing and designing software solutions, ensuring adherence to best practices and...

Company Akkodis is a global leader in engineering, technology, and R&D, harnessing the power of connected data to drive digital transformation and innovation for a smarter, more sustainable future. As part of the Adecco Group, Akkodis employs over 50,000 engineers and digital specialists across 30 countries in North America, EMEA, and APAC. Our teams bring extensive cross-sector knowledge in...

🚀 Software Engineer – Agentic AI 🚀 ✨ Fintech start-up backed by serial entrepreneurs ✨ 💎 The kind of equity you actually realise 💎 📍 London - 4 days in office 💸 £100k - £200k base (level-dependent) 💲 $160k equity vested over four years 💗 Onsite chef, barber, catered breakfasts, gym membership Join this rapidly scaling AI-native Fintech start-up that’s already raised a significant Series A...

Join Our Network of Patent Linguists | DE > EN RWS is expanding its network of expert linguists for long-term collaboration on high-impact patent translation projects. We are currently seeking freelance translators and proofreaders to support ongoing work with some of the world’s most innovative technology brands. We are particularly interested in linguists with subject-matter expertise in...

C# DEVELOPER (CONTRACT) A leading commodities trading environment is expanding its Trading IT function and is hiring an experienced C# / .NET Developer to support the implementation of a new LNG trading system and associated tools. This is a rare opportunity to work hands-on on a modern LNG trading platform within a front-office–aligned technology team. £800–900 per day This is a senior,...

You will be responsible for procurement on a section of works, managing the tender, award & recommendation of works packages/orders. The successful candidate will have: - Proven ability of drafting formal Subcontract documents - Experience with NEC contracts - Civil Engineering Contractor background

About Us Find out exactly what skills, experience, and qualifications you will need to succeed in this role before applying below.SharkNinja is a global product design and technology company, with a diversified portfolio of 5-star rated lifestyle solutions that positively impact people’s lives in homes around the world. Powered by two trusted, global brands, Shark and Ninja, the company has a...

Role: BMS Project EngineerDay Rate: Up to £460 a day Outside IR35Location: LondonOverviewCandidates should take the time to read all the elements of this job advert carefully Please make your application promptly.Our client is an established Building Management System (BMS) company with several ongoing projects in the London area. xwzovoh They are looking to recruit a BMS Project engineer with...

You will lead the UK Sales and Customer Success teams with full responsibility for performance, culture and execution.

You will share P&L responsibility with the UK General Manager and play a central role in shaping the commercial strategy.

You will have the autonomy, tools and market leading product to build your own high-performing revenue engine and make an immediate impact.

You will lead enterprise-level new business across the asset management universe — from boutiques to global managers — positioning a highly regarded front-to-back technology suite covering: ✓ Portfolio management

You will work across development, operations, and delivery to design, build, and run secure, scalable, and robust environments for web applications and digital experiences.

Location: London (Hybrid) We do not consider applicants outside the UK or requiring Visa sponsorship. Reports To: CEO Salary: up to £60k DoE The Mission We are Roots. We are the reason that hundreds of thousands of gardens across the UK are looking greener than they did five years ago. Think Patch own online plants? Check our review count... We aren’t a fragile start-up anymore. We’re a...

Gas Engineering Supervisor - JLL Workplace Management, LondonRead the overview of this opportunity to understand what skills, including and relevant soft skills and software package proficiencies, are required.Position Overview?Gas Engineering Supervisor responsible for leading a team of gas engineers and technicians across JLL's London commercial property portfolio. xwzovoh This role combines...

You will contribute to building the Salt platform and supporting systems, working with modern technologies such as React, TypeScript, AWS, and AI-powered tools.

You will ship features, learn fast, and collaborate with a product design-led team focused on excellent user experience.