Lead Software Engineer Python Java Jobs in London, UK

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Principal Mechanical Engineer

An established, global MEP design consultancy is seeking a Principal Mechanical Engineer to join its London team. With a strong international presence and a reputation for delivering technically complex projects, the business specialises in mission-critical and data centre developments across global markets. ...

Principal Mechanical Engineer

An established, global MEP design consultancy is seeking a Principal Mechanical Engineer to join its London team. With a strong international presence and a reputation for delivering technically complex projects, the business specialises in mission-critical and data centre developments across global markets. ...

Senior Electrical Engineer

Job Title: Senior Electrical Engineer Salary: up to £65,000 DOE Location: London, UK Job Type: Permanent An exciting opportunity has arisen for a Senior Electrical Engineer to join a well-established Building Se ...

Principal Civil/Structural Engineer

We are hiring a Principal Civil/Structural Engineer for an independent civil and structural engineering consultancy based in Surbiton. Our client are renowned for delivering innovative, sustainable, and cost-effective design solutions across the power and energy sectors. We’re looking for a talented Princi ...

Full Stack Engineer

Role: Full Stack Engineer Salary: £ DOE plus extensive benefits Contract type: Permanent Employment type: Full time Working hours: Core hours 09:30 - 16:00; flexible around these. About the Company We are the largest online pharmacy in the UK, serving ove ...

QA Resource

As a QA Engineer you will be expected to work at one of our clients and perform high‑quality functional and non‑functional testing on complex systems. You must be familiar with Agile practices and tools and able to work in a fast‑paced CI/CD environment. You will be proactive and always look for ways to im ...

Senior QA Automation Engineer

At NiCE, we don’t limit our challenges. We challenge our limits. Always. We’re ambitious. We’re game changers. And we play to win. We set the highest standards and execute beyond them. And if you’re like us, we can offer you the ultimate career opportunity that will light a fire within you.So, what’ ...

Senior QA Automation Engineer

At NiCE, we don’t limit our challenges. We challenge our limits. Always. We’re ambitious. We’re game changers. And we play to win. We set the highest standards and execute beyond them. And if you’re like us, we can offer you the ultimate career opportunity that will light a fire within you.So, what’ ...

GenAI Engineer / ML Engineer

This is a fantastic opportunity for a GenAI Engineer / ML Engineer to support a technology 1st business with the next phase of their Generative AI platform. Location: Remote This is a 6 months contract engagement, outside IR35, remote working + scope to extend. Responsi ...

Solace Middleware Engineer

Solace Middleware Engineer London based £550-700/day umbrella Hybrid I'm currently supporting a leading Bank in their search for an experienced Solace Middleware Engineer to support their Front Office eTrading systems. This role would involve ...

Senior JavaScript Engineer

This Senior JavaScript Engineer role is with a startup who are one of fastest growing in their field. They’ve just gone through a round of funding and need to up their productivity so are looking for an extra pair of hands to join their team in Mayfair.Good amount of tech on site including Python, Reac ...

Senior JavaScript Engineer

This Senior JavaScript Engineer role is with a startup who are one of fastest growing in their field. They’ve just gone through a round of funding and need to up their productivity so are looking for an extra pair of hands to join their team in Mayfair.Good amount of tech on site including Python, Reac ...

Internal Model Actuary (ERM Team) – 29705

Overview Key Duties (Including but not limited to): Design, develop, support, test and document internal models for credit, interest rate, inflation and equity release mortgages Support the internal model operations team, investigating internal model queries, and proposing ...

Internal Model Actuary (ERM Team) – 29705

OverviewKey Duties (Including but not limited to):Design, develop, support, test and document internal models for credit, interest rate, inflation and equity release mortgagesSupport the internal model operations team, investigating internal model queries, and proposing s ...

Senior Pricing Analyst – 29570

OverviewKey Duties (Including but not limited to):Pricing Strategy Development: Assist in the creation and implementation of pricing models and strategies for travel insurance productsData Analysis: Analyse large datasets to identify trends, customer behaviour, and pricin ...

Senior Pricing Analyst – 29570

OverviewKey Duties (Including but not limited to):Pricing Strategy Development: Assist in the creation and implementation of pricing models and strategies for travel insurance productsData Analysis: Analyse large datasets to identify trends, customer behaviour, and pricin ...

Internal Model Actuary (ERM Team) – 29705

OverviewKey Duties (Including but not limited to):Design, develop, support, test and document internal models for credit, interest rate, inflation and equity release mortgagesSupport the internal model operations team, investigating internal model queries, and proposing s ...

Technical Solutions Engineer II

Overview Diligent is the AI leader in governance, risk and compliance (GRC) SaaS solutions, helping more than 1 million users and 700,000 board members to clarify risk and elevate governance. The Diligent One Platform gives practitioners, the C-Suite and the board a consolidated view of their enti ...

Site Reliability Engineer

SRE is part of a global organization that leverages the latest technology to communicate with our colleagues across the globe.We organize ourselves into distributed teams -- SRE teams are anchored to iManage offices across the globe.Tuesdays and Thursdays are dedicated to in-office colla ...

Site Reliability Engineer

SRE is part of a global organization that leverages the latest technology to communicate with our colleagues across the globe.We organize ourselves into distributed teams -- SRE teams are anchored to iManage offices across the globe.Tuesdays and Thursdays are dedicated to in-office colla ...

Software Engineering Manager, WebView System Health

Software Engineering Manager, WebView System Health _corporate_fare_ Google _place_ London, UK **Advanced** Experience owning outcomes and decision making, solving ambiguous problems and influencing stakeholders; deep expertise in domain. **Minimum qualifications:** + ...

Frontend Developer

Ship the first version of the companies web application, starting from designs. Build a landing page that converts visitors into users. Implement the trading interface for minting, redeeming, and managing Leveraged Tokens. Set up Redux state management, routing with React Route ...

Full Stack Engineer in London Cogna

Full Stack Engineer London, United Kingdom Posted 11 months ago Tech Stack FastAPI Go React Redux TypeScript Python Qualifications At least 8 years of relevant work experience. ...

Senior Electrical Engineer (E&P)

Overview Around the world, SYSTRA’s specialists plan, design, integrate, test, commission, project manage and deliver mass transit and mobility solutions used by more than 50 million people daily. For over 60 years the Group has supported cities and regions by creating, improving and modernising t ...

Principal Platform Engineer

About WatchTowr WatchTowr is the Preemptive Exposure Management capability trusted by Fortune 500 companies and critical infrastructure providers. By combining proactive threat intelligence, real attacker telemetry, and automated red teaming, WatchTowr continuously identifies and validates real e ...

Senior Software Engineer (Go) Energy Trading & Renewable Storage Up to £95k Hybrid

Work at the intersection of trading, battery storage and renewable energy. In this role you’ll be solving some of the biggest challenges for energy storage, modelling the performance of ‘grid-scale’ battery behaviour to allow Energy Traders to make decisions on when to discharge or harvest from the gri ...

Contract Forward Deployed Engineer

Location: UK RemoteDepartment: EngineeringEmployment Type: Contract (B2B)Contract Length: 6 monthsAbout YLD:Our goal is to help our clients keep moving forward. We work w ...

Contract Forward Deployed Engineer

Location: UK RemoteDepartment: EngineeringEmployment Type: Contract (B2B)Contract Length: 6 monthsAbout YLD:Our goal is to help our clients keep moving forward. We work w ...

Project Engineer

Senior Technology Engineer (Innovation & Drones) Location: Stratford, London (Hybrid – minimum 2 days per week onsite) Duration: 6 months (Strong potential to convert to permanent) Rate: £450 – £470 per day (Inside IR35) Clearance: BPSS Application Deadline: Thursd ...

Backend Engineer Marketing Technology

Join Proton and build a better internet where privacy is the default. Proton was founded in 2014 by scientists from CERN on a simple truth: privacy is a fundamental human right . Since then, we’ve built the world’s largest encrypted email service (Proton Mail) and expanded into Proton VPN, P ...

Staff AI Platform Engineer

As a Staff Applied AI Engineer , you’ll play a pivotal role in shaping how AI is adopted and applied across our organization. You’ll be responsible for driving AI-first initiatives that improve developer productivity, streamline workflows, and unlock new product capabilities. This is a highly cross‑ ...

Senior Dev/ML Ops Engineer

Here at Humanoid, we believe in a future where robots amplify human potential. That’s why we’ve set out on a mission to build the world’s most capable, commercially-scalable, and safe humanoid robots. We’re bringing that mission to life with HMND‑01 Alpha - our rapidly developed humanoid platform now runni ...

Senior Dev/ML Ops Engineer

Here at Humanoid, we believe in a future where robots amplify human potential. That’s why we’ve set out on a mission to build the world’s most capable, commercially-scalable, and safe humanoid robots. We’re bringing that mission to life with HMND‑01 Alpha - our rapidly developed humanoid platform now runni ...

Kubernetes & Cloud Security Engineer | Global Macro Trading Specialist

(Up to c. £225k Comp Package | On-Site Working) Role Overview We’re representing a leading investment management firm seeking a Kubernetes & Cloud Security Engineer to embed security directly into its platform engineering and software del ...

Machine Learning Engineer

About the roleJoin us as a Machine Learning Engineer to deliver bespoke, impactful AI solutions for our diverse clients.You will be instrumental in bringing machine learning out of the lab and into the real world, contributing to scalable software architecture and defining best pra ...

MS Cloud Infrastructure Engineer

About GTT GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications – anywhere in the world. We serve thousands of organizations, bringing together the right people, partners and tec ...

MS Cloud Infrastructure Engineer

About GTT GTT is a leading networking and security as a service provider for multinational organizations, simply and securely connecting people and machines to data and applications – anywhere in the world. We serve thousands of organizations, bringing together the right people, partners and tec ...

Machine Learning Engineer

About the roleJoin us as a Machine Learning Engineer to deliver bespoke, impactful AI solutions for our diverse clients.You will be instrumental in bringing machine learning out of the lab and into the real world, contributing to scalable software architecture and defining best pra ...

Data Engineer

Data Engineer – London / Hybrid Up to £53,000 + Bonus + Excellent Benefits A leading technology consultancy is expanding its Data & AI practice and looking to hire multiple Data Engineers to support a growing portfolio of enterprise transformation programmes across the UK. </p ...

Data Engineer

Data Engineer – London / Hybrid Up to £53,000 + Bonus + Excellent Benefits A leading technology consultancy is expanding its Data & AI practice and looking to hire multiple Data Engineers to support a growing portfolio of enterprise transformation programmes across t ...

Principal Engineer

Principal Engineer - Series A Scale Up - Up to £270,000 Ready to apply Before you do, make sure to read all the details pertaining to this job in the description below.I'm currently looking for a Principal Engineer to join a high-growth, YC-backed AI ...

ML Engineer II: Build Scalable AI for Travel Solutions

A leading business travel company is seeking a Machine Learning Engineer II to join their Product AI Engineering team. This role involves designing, building, and optimizing intelligent systems using cutting-edge AI techniques. Candidates should have over 6 years of experience with a bachelor's or equivalent. Fa ...

Production ML Engineer: Scale Personalization Impact & Equity

A forward-thinking tech startup in Greater London seeks an experienced Machine Learning Engineer to develop robust ML systems for retail. Your key responsibilities will include designing production-grade infrastructure and collaborating with researchers on model implementation. Applicants should have 3–5+ years ...

ML Engineer II — AI for Travel Tech (Manchester)

A leading global business travel company seeks a Machine Learning Engineer II in Manchester. The role involves designing, building, and optimizing AI systems for business impacts. Candidates should have robust experience in AI techniques, statistical modeling, and strong coding skills in Python. The company offe ...

Remote DevOps Engineer | Blockchain Infra & Security

A blockchain technology company is seeking a Mid-Senior DevOps Engineer to build and maintain secure blockchain networks and infrastructure. Responsibilities include managing Linux servers, automating processes, and creating comprehensive documentation. The ideal candidate has experience with Docker and Kubernet ...

Senior Backend Engineer: AI APIs & Scalable Infra

A leading technology company in Greater London is seeking a Senior Backend Engineer to work on advanced AI systems. The role involves building scalable APIs and improving inference infrastructure while collaborating with AI researchers. The ideal candidate will have strong skills in Python and Go, along with kno ...

Senior ML Engineer – GenAI & Real Time ML for Impact

A leading food delivery company is seeking an experienced Senior Machine Learning Engineer to join their London team. In this hybrid role, you'll shape decision-making systems affecting customer experience. Key responsibilities include leading ML model development, ensuring reliability through robust monitoring, ...

Trading Systems Engineer: Build Resilient Market Tech

A diversified trading firm is seeking a Trading Systems Engineer to join their Cumberland team. The role involves maintaining the health of trading systems, liaising with trading partners, and providing technical support. Ideal candidates will have a Bachelor’s degree in a related field, 2+ years of experience i ...

AI Engineer (Internal Audit) – Hybrid, London

A leading market infrastructure provider seeks an Associate AI Engineer to design, develop, and maintain AI services. The role involves collaborating across various functions to deliver innovative AI solutions for internal audit processes. Candidates should have expertise in Generative AI, Machine Learning, and ...

Analytics Data Engineer — Remote, Cloud Pipelines

A data solutions company in Greater London is seeking a Data Engineer. This role is mainly remote but requires flexibility to travel to client sites. Responsibilities include designing ETL processes, collaborating with teams, and ensuring data quality. Candidates should have strong skills in SQL, Python, and dat ...

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