Lead Software Engineer Python Java Jobs in UK

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Graduate Software Engineer

Job Description As the world’s largest retail electronic payments network, Visa customers trust us with ensuring that they can pay with security and confidence everywhere they want to be. Software Engineers at Visa look after the systems that form the core of the largest global payments n ...

Senior Software Engineer

Job Summary Join Barclays as a Senior Software Engineer, where you will design and build scalable C# (.NET/.NET Core) and Python-based calculation engines to drive efficiency and enable dynamic client billing. You will develop robust data models in SQL Server, implement complex business logic, an ...

Senior Software Engineer

Salary: Up to £85,000 (depending on experience) Role Location: Central London – Hybrid (1–2 days per week in office) The company Signify are partnered with a fast‑growing fintech redefining how underserved communities access financial products. Backed by leading VC ...

Senior Software Engineer

Senior Full Stack Developer | £70,000 – £80,000 | West Drayton (4 days onsite) We’re hiring a Senior Full Stack Developer to join a collaborative, technically diverse team building cutting‑edge ground software used by leading commercial airlines and military organisations. This is ...

Senior Software Engineer

Software Engineer - Engineering - Here East, Queen Elizabeth Olympic Park, London, United Kingdom Job Title Job Title Senior Software Engineer Job Description The studio behind: Football Manager. Founded in 1994, Sports Interactive became a wholly owned subsidiary ...

Senior Software Engineer

A new opportunity has arisen for a Senior Software Engineer to join a talented Software Team which forms a key part of a Global Centre of Excellence for Mobile Applications. Domestically and internationally, this team develops applications that are deployed across a range of devices and are designed ...

Senior Software Engineer

What if the systems you built were used every day by millions of readers around the world? A long‑established, AI‑driven technology business is hiring a Senior Software Engineer to work on products used daily by leading global media and publishing organisations. Founded over a decade ago, the ...

Senior Software Engineer

About Zeta Global Zeta Global (NYSE: ZETA) is the AI‑Powered Marketing Cloud that leverages advanced artificial intelligence and trillions of consumer signals to make it easier for marketers to acquire, grow, and retain customers more efficiently. Through the Zeta Marketing Platform (ZMP), our vi ...

Senior Software Engineer

Location: Edinburgh (relocation assistance available) Job Type: Full-Time Hybrid (3 x days onsite) About Malted Malted builds next-generation specialised intelligence for financial institutions. Our products combine advanced language technology with deep domain understanding to he ...

Senior Software Engineer

Senior Software Engineer Manchester (Hybrid) | Up to £80,000 + bonus + equity | Permanent This is not a role for someone who wants to sit behind a ticket queue and wait to be told what to build next. We are working with a fast-growing technology consultancy based in central ...

Senior Software Engineer

Join DWP as a Senior Software Engineer in the PTP‑MOSS team, maintaining and improving vital legacy systems that enable services for millions across the UK. Our DWP Digital teams use fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in ...

Senior Software Engineer

Job Description Senior Software Engineer Function: Technology Location: London, Peterborough Curious about what's next? So are we. Join Compare the Market and help to make financial decision making a breeze for millions. At Compare the M ...

Senior Software Engineer

Join DWP as a Senior Software Engineer in the PTP‑MOSS team, maintaining and improving vital legacy systems that enable services for millions across the UK. Our DWP Digital teams use fresh ideas and leading-edge tech to build and maintain digital solutions that will be used by nearly every person in ...

Senior Software Engineer

Our Mission At Carbon Re, we’re on a mission to cut gigatonnes of carbon emissions from the world’s biggest emitting industries, like cement, steel, and glass, by applying cutting‑edge AI where it matters most. We’re a small and growing team of scientists, engineers, and strategic thinkers who care deeply ...

Senior Software Engineer

A Senior Software Developer is required to join a delivery-focused Service Team working for a global name, maintaining and evolving live software systems that support client solutions. This is a hands-on, client-facing role, ideal for someone with 5+ years’ commercial experience who enjoys working on producti ...

Senior Software Engineer

Overview London (Hybrid) The Role We are looking for a hands‑on Lead Developer to take technical ownership of software delivery across our Distribution / Broker Connectivity platform. This role sits within an Agile delivery team and focuses on building, integrating, ...

Senior Software Engineer

Belfast {Hybrid – 2 days a week in office) Kura is delighted to be recruiting a Senior Software Engineer for an innovative software lab pioneering sustainable farming and animal welfare. This is a unique opportunity to join a high-impact team, building software that underpins critic ...

Senior Software Engineer

Position Summary Light & Wonder is the global leader in cross-platform games and entertainment. The company brings together 5,000 employees from six continents to connect content between land-based and digital channels with unmatched technology and distribution. Guided by a culture that values da ...

Senior+ Software Engineer

About the role: As a Senior Software Engineer at Syntasso, you’ll play a key role in designing, building, and evolving Kratix and Syntasso Kratix Enterprise. You’ll collaborate closely with a small, expert engineering team. Your work will span product contribution, customer collaboration, ...

Senior Software Engineer

We’re not just building better tech. We’re rewriting how data moves and what the world can do with it. With Confluent, data doesn’t sit still. Our platform puts information in motion, streaming in near real-time so companies can react faster, build smarter, and deliver experiences as dynamic as the world a ...

Senior Software Engineer

Overview The Merchantware and Semi‑Integrated platform is developed and maintained by our Belfast team. The platform handles millions of daily card transactions for customers ranging from small merchants to 70,000‑seat stadiums. Throughput and resilience are critical as the platform is ru ...

Senior Software Engineer

Senior Software Engineer This is an opportunity to build the foundational systems of a frontier AI company. You’ll work across our voice layer, agent orchestration, and deep healthcare integrations. You’ll design and ship systems that must be fast , reliable , observable ...

Senior Software Engineer

About Us At UnlikelyAI, we are building the future of AI: one that is reliable, accurate, and transparent. Our neurosymbolic technology harnesses the power of LLMs and generative AI, and combines it with Universal Language – our proprietary symbolic technology that bridges the gap between probabi ...

Senior Software Engineer

VoCoVo specialises in innovative communication solutions tailored for businesses, particularly within the retail sector. Our flagship products are designed to create a connected store experience, facilitating seamless communication among retail staff to enhance efficiency and elevate customer service. We e ...

Graduate Software Engineer

Graduate Software Engineer – Build Technology That Moves in the Real World Want to write code that doesn’t just sit on a screen—but powers real robots in real environments? At Dexory, our engineers build the systems behind autonomous robots that navigate warehouses, scan inventory, and ge ...

Software Engineer III

We have an exciting and rewarding opportunity for you to take your software engineering career to the next level. As a Software Engineer III at JPMorganChase within the Cloud Foundational Services in Infrastructure Platform, you serve as a seasoned member of an agile team to design and deliver trus ...

Graduate Software Engineer

About Sprint Reply Sprint Reply is the Reply Group company specialised in Intelligent Process Automation. Our mission is to create automation platforms capable of solving concrete business problems, supporting our customers in the transformation towards the Intelligent Enterprise and the adoption ...

NSL Software Engineer

Location(s):UK, Europe & Africa : UK : Manchester BAE Systems Digital Intelligence is home to 4,500 digital, cyber and intelligence experts. We work collaboratively across 10 countries to collect, connect and understand complex data, so that governments, nation states, armed forces and comm ...

Software Engineer, Agents

About Decagon Decagon is the leading conversational AI platform empowering every brand to deliver concierge customer experiences. Our technology enables industry-defining enterprises like Avis Budget Group, Block’s Cash App and Square, Chime, Oura Health, and Hunter Douglas to deploy AI a ...

System Software Engineer

Summary Imagine what you can do here. At Apple, new ideas have a way of becoming extraordinary products very quickly. Bring passion and dedication to your job, and there’s no telling what we can accomplish together. Do you love crafting elegant solutions to highly complex challenges? Can you intri ...

Staff Software Engineer

Staff Software Engineer – THE AI Scale-Up of 2026 | Future Unicorn Up to £160,000 plus excellent stock options London – 2 days a week Next.js | React | Typescript | Node | Python Are you a product‑focused Staff Software Engineer who enjoys autonomy and wants to build ...

Research Software Engineer

This posting is for a full-time (35 hours per week) role, initially funded for up to 24 months. The University of Glasgow has been a world‑leading institution for more than 575 years, ranked 12th in the Times Higher Education (THE) World Impact Rankings 2025. Our people are at the forefront of inno ...

Principal Software Engineer

Job Overview Level: 6 Salary band: £130,000 - £170,000 depending on experience Bonus: 15% performance‑based, discretionary Location: Hybrid – 3 days per week on site in London (Angel) At Automata, we’re on a mission to transform how scientists work by making automa ...

Financial Software Engineer

Galatea is looking for a Financial Software Engineer to join our growing team! We are at the center of the digital revolution in finance and are looking for engineers who want to be part of helping to build and improve key systems used by our Capital Market clients. As a Associate at Galatea you wi ...

Integration Software Engineer

Cambridge, UK | Full-time | Permanent | Hybrid Salary: £65,000 - £80,000 DOE The salary range for this role is broad, as we are able to consider varying levels of experience. Any offer made will carefully take into account level of experience (including relevant industry experience), transf ...

Research Software Engineer

Organisation/Company DURHAM UNIVERSITY Research Field Architecture Engineering Physics Researcher Profile Recognised Researcher (R2) First Stage Researcher (R1) Application Deadline 4 Jun 2026 - 00:00 (UTC) Country United Kingdom Type of Contract Other Job Status Full-time Is the job funded through the EU ...

Principal Software Engineer

Principal Software Engineer – Go | Distributed Systems £160,000-£200,000 + 15% bonus + Equity Go/Python/Rust - Kubernetes, AWS, Distributed Systems Hybrid (Central London, 3 days a week in office) Broad/Complex Technical Environment Well-funded Series B deep-tech compan ...

Research Software Engineer

Organisation/Company DURHAM UNIVERSITY Research Field Architecture Engineering Physics Researcher Profile Recognised Researcher (R2) First Stage Researcher (R1) Application Deadline 4 Jun 2026 - 00:00 (UTC) Country United Kingdom Type of Contract Other Job Status Full-time Is the job funded through the EU ...

Senior Software Engineer

About Meridial Meridial is a Focused Research Organisation (FRO) with a mission to bring connectomics into the living brain. We are building a platform for longitudinal, synapse-resolution mapping of functional neural circuitry in preclinical models. Our aim is to deploy this platform for transla ...

Senior Software Engineer

**Job Description Summary** This role of Senior Software Engineer is within the LSEG RISK Intelligence Technology group. The group is responsible for the development of the technology platforms supporting key products including Connected Risk, World Check, and products in the Risk Managed Services space. Resp ...

Senior Software Engineer

Micro Nav is a leading company in the aviation simulation and training industry, known for delivering innovative solutions to enhance aviation safety and efficiency. Headquartered in Bournemouth, we are committed to driving excellence through cutting‑edge technology and exceptional customer service. Joi ...

Senior Software Engineer

About Meridial Meridial is a Focused Research Organisation (FRO) with a mission to bring connectomics into the living brain. We are building a platform for longitudinal, synapse‑resolution mapping of functional neural circuitry in preclinical models. Our aim is to deploy this platform for translati ...

Senior Software Engineer

Job Title: Senior Software Engineer Location: Leeds - Hybrid / Flexible Salary: £60,000 - £70,000 + Benefits Package Fruition IT are working with a well‑established tech‑first business who are embarking on a complete technical transformation. This client is l ...

Flight Software Engineer

At NewOrbit Space, our mission is to engineer the lowest orbiting satellites on Earth to rapidly advance global connectivity and insight. We are currently building satellites that can operate at an altitude of just 200 km - one-third that of conventional satellites. Thanks to our propulsion system ...

Software Engineer DV

Location: Manchester – expect to attend site five days a week Clearance: Must hold current UK*C DV The company: Cyber Security and National Security technical consultancy. You will work with a large degree of autonomy developing cutting edge solutions over a ran ...

ADA Software Engineer

Ada Software Engineer - 1509 Location: Luton (Hybrid: 4 days on-site) Contract: 12 months IR35: Inside IR35 Security Clearance: Full UK SC required Rate: £75ph, UMB, inside IR35 About the Role A real-time embedded software engineer with knowledge of ...

Principal Software Engineer

Principal Software Engineer – C++ and Rust - is required by highly successful and fast growing technology consultancy. They build data, AI and software solutions for clients in a broad range of industries, working on demanding problems in challenging environments. The role ...

Principal Software Engineer

Are you excited to influence technical direction across teams while still contributing hands‑on to complex, high‑impact engineering challenges? Do you want to shape domain architecture, mentor senior engineers, and connect technical decisions to real customer and business outcomes? About o ...

Fullstack Software Engineer

We are using and creating technology to transform operations at sea to enable people and the planet to thrive. We are open-minded and fearless in our approach to innovation and don't believe in boundaries. We challenge everything and have massive ambitions to drag aging industries into the tech era. We tak ...

Software Engineer London

Position Summary Two Sigma is a leading quantitative investment management and trading firm. The company applies a scientific approach to investing, combining cutting‑edge technology, artificial intelligence, data science, and quantitative research with rigorous human inquiry to capitalize on mar ...

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    Lead Software Engineer Python Java Jobs in United Kingdom Job Search Guide, Trends and Insights