126 to 150 of 221 Software Engineering Jobs in the City of London

international cross-border payments company are looking for a Principal Software Engineer to help build and scale their payment platform. You’ll work across the full stack - frontend, backend, cloud infrastructure, and data - designing reliable systems that power real financial transactions. You'll lead their latest platform, provide technical … database performance and system reliability Contribute to architecture decisions and technical strategy Support CI/CD pipelines and cloud infrastructure Mentor developers and promote engineering best practices Tech Stack: Frontend: TypeScript, JavaScript, (React/Angular), HTML5, CSS3 Backend: Python REST APIs Data: MySQL, PostgreSQL, Redis Cloud & DevOps: AWS, Docker ...

conducted, building systems that are safer, smarter, and dramatically more environmentally responsible. Location: London or Porto The Role We’re seeking a Senior Software Engineer to design, build, and maintain backend containerised services that power our scalable edge‐compute platforms. You’ll work closely with a Software Team … Lead and collaborate across multidisciplinary engineering teams, providing technical leadership while remaining hands‐on with complex systems. What You’ll Do Build production‐grade software using .NET C#, Python , and modern backend technologies Design and prototype services using containerised microservices Apply and challenge engineering best practices ...

speak with motivated individuals looking to build a successful career in recruitment. Our client are a highly successful global recruitment agency specialising in blockchain, software engineering and IT . But dont worry, you dont need prior knowledge as they will teach you all you need to know … career and be rewarded with additional incentives along the way. Why join? Uncapped commission structure up to 40% Investment in leading recruitment technology and software Vitality health insurance Discounted gym membership Shopping dashes Spin the wheel prizes Birthday off work - (if it falls on a weekend either the Monday ...

Software Engineer - Backend London (Occasional travel) Salary: Up to £85k + Benefits An established, global technology business within the hospitality-tech industry is seeking an accomplished Principal Software Engineer to lead the design and delivery of next-generation digital solutions. This is an opportunity to shape greenfield projects … What will I be doing? Lead the technical vision and architectural direction across complex backend systems, ensuring scalability, reliability, and performance. Partner closely with engineering leadership to define best practices, coding standards, and long-term technical strategy. Design, develop, and oversee the delivery of robust, production-grade software ...

platform. Trust in SODA, part of Trinnovo Group, is hiring experienced 360 recruiters to join our US Technology team , focused on markets such as Software Engineering, Cloud, DevOps, Data, and Product. This is a strategic growth hire, giving you the opportunity to develop and scale a US desk … markets Ability to work 3 days per week from our Old Street office Advantageous: Experience or interest in US markets Background in Software, Cloud, DevOps, Data or Product recruitment What You’ll Get Up to 50% commission with no threshold Relocation support ...

conversation, figuring out what matters, and shipping solutions that get used. We are looking for someone who can bridge product thinking, software engineering, and real-world AI system behaviour, turning ideas into reliable, production-ready features used at scale. You will work across the full stack, with ...

culture Incentives, team socials, lunches and rewards The opportunity to build a genuinely lucrative career Our client specialises in technology recruitment across areas including Software Engineering, Data, Cloud, Cyber Security, Quantitative Finance and Web3, partnering with global businesses across the UK, Europe, the US and APAC. Why Recruitment ...

Senior Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £110,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Senior Software Engineer with extensive knowledge of building distributed systems? Looking to join … so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Senior Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world ...

your application will be rejected. Education : a graduate from a UK University with a technical academic background in computer science, software engineering, information security, or a related field. IT literacy: confident using Microsoft Office applications, especially Word, Excel, Outlook and PowerPoint. Fluent in English : as this role ...

Software Engineer - Mid-Lead Level - Security & Defence 📍 Location: London, Gloucester, or Manchester (Hybrid options available) 💰 Salary: £47,000 - £90,000 + clearance uplift + company bonuses + benefits 🟩 Clearance: Active eDV Clearance is essential Join one of the UK’s most impactful mission-led technology teams and work … sharp end of national security. We’re working with a range of defence primes, specialist consultancies, and tech-first SMEs delivering cutting-edge software solutions to protect the UK’s critical assets. These roles are core to national security, working across projects in cyber defence, secure data systems, threat ...

Senior Software Engineer – Python/Django (6 Month Freelance Contract) 📍 Location: Fully Remote across Europe/UK 📅 Duration: 6 Months 💰 Rate: Competitive A major European mobility and technology organisation is undergoing a significant digital transformation, modernising core systems and building new platform capabilities. Role Summary You’ll join … engineering team to deliver a high-priority backend project using Python/Django , working on new service development, integrations, and the modernisation of existing systems. Key Responsibilities Build and enhance backend services using Python/Django Develop REST APIs and integrate with internal/external platforms Support data models ...

Insight Global is seeking a Junior Software Engineer to join our client’s growing financial clients! You will be responsible to deliver high quality software solutions across the firm’s trading, operational and regulatory landscape. The role focuses on enhancing in house systems and integrating front office, middle ...

this is wrong and we are on a mission to fix it, triggering the future of hardware design. We are creating an entirely new software engine for circuit boards, that takes as inputs the requirements of a circuit board and automatically outputs a complete design, ready for manufacture. … Lead Software Engineer, you’ll create simple and elegant solutions to difficult technical problems that the world has not solved before. You will work in close collaboration with a highly-functioning team of software, electronics, algorithm engineers and product managers. Responsibilities Collaborate with the product team ...

commercial tech training solutions. As the Business Development Manager , you will support organisations in building future-ready digital workforces through programmes such as Software Development, Cyber Security, Data, Cloud, and IT Support, working with both levy and non-levy employers to maximise the value of apprenticeships and funded training. … courses, positioning them as strategic workforce and upskilling solutions. Sell both funded apprenticeship pathways and commercial short courses/bootcamps in areas such as Software Engineering, Cyber Security, Data Analytics, AI, and Cloud Technologies. Achieve and exceed monthly and quarterly targets for new learner starts, employer sign ...

Senior Software Engineer C++ (Python, SQL, Linux, Trading, FinTech, Financial Technology, Low Latency, Backend) ***This is a hybrid role, 2 days remote and 3 days in the office*** Our client actively encourages diversity, equality and inclusion within its workforce and welcomes applications from a diverse background, REC Solutions Limited … does not discriminate in regards to age, gender, national origin, religion or any other basis. An excellent opportunity has arisen for a Senior Software Engineer C++to join a friendly team my client are a well-established exchange (FinTech, Financial Technology) based in the City. My client are working with ...

ASPECT CTRM implementations and customizations. The successful ASPECT CTRM Technical Consultants will be very strong in Aspect scripting/customization, with a strong software engineering/solution architecture background. It is 100% essential that you have strong and proven ASPECT CTRM scripting/customization experience as this ...

other Configuration Management tools) History of IaC with Terraform (Terragrunt a bonus) Hands-on work with Monitoring and Observability technologies, ideally NewRelic Background in Software Engineering, ideally capable working with Go This position can offer £40-50K, ideally with 2-3 years experience, and operates a flexible ...

Experience working within the US technology market A track record of consistent billing within a recruitment setting Experience developing and managing hiring partnerships within Software Engineering, Data, Machine Learning or AI markets Strong commercial awareness and ability to sell hiring solutions Ability to operate within a high-performance ...

within the UK/EU technology market A track record of consistent billing within a recruitment setting Experience developing and managing hiring partnerships within Software Engineering, Data, Machine Learning or AI markets Strong commercial awareness and ability to sell hiring solutions Ability to operate within a high-performance ...

every 4 - 8 weeks) Salary: Up to £100,000 An established, global technology business within the hospitality-tech industry is seeking a talented Backend Software Engineer to help build and scale cutting-edge digital solutions click apply for full job details ...

Lead Software Engineer | Distributed Systems | Sustainable Cloud Native Platform 💸Up to £130,000 per annum plus bonus plus stock 🏠Central London office 🖱️Golang, Rust, C, Kubernetes, Linux, Cloud Native, Distributed systems... Are you a Lead Software Engineer with extensive knowledge of building distributed systems? Looking to join … so... I'm partnered with a very exciting Cloud scale-up who have received record Series A funding and are looking for innovative Lead Software Engineers to join their ambitious team! With a new VP of Engineering who has spent much of their career building out a world ...

looking for a Senior Software Engineer to join a growing team building smart, scalable tools used by professionals across a range of industries. You'll work onsite in London, helping shape robust backend services and responsive user experiences using React, NextJS and NodeJS. What You'll Do Build … mindset with excellent communication skills Enthusiastic about solving problems and sharing knowledge Nice to Have: Experience with Drupal 7 Familiarity with serverless architectures, quality engineering, or modern frontend frameworks INDLON 49904NBR2 The Portfolio Group are acting on behalf of our client in recruiting for this position. ...

Hybrid, Permanent We are representing a London-based technology venture building AI platforms to transform how enterprise leaders navigate uncertainty. This is a core engineering role within a senior, lean team. You will be building a platform that goes far beyond standard SaaS dashboards, focusing instead on high-dimensional … trust and minimal oversight, moving projects forward even when the path isn't perfectly mapped out. Quality & Speed: You have a pragmatic approach to engineering, knowing exactly when to invest in a robust architecture and when to iterate quickly. The Environment This is an opportunity to join a specialized ...

Senior Software Engineer – AI/Agentic Systems London (Hybrid) We’re partnering with a cutting-edge AI startup redefining how intelligent systems operate at scale. Their mission is ambitious: to push the boundaries of agentic AI and build platforms that automate complex, multi-step human workflows—unlocking entirely … world-class AI talent, and directly shape a platform sitting at the intersection of research and real-world deployment. The Opportunity As a Senior Software Engineer , you’ll play a key role in building and scaling an enterprise-grade AI platform. You’ll operate at the core ...

Senior Software Engineer/Data Platform Engineer London Area, United Kingdom (Hybrid – 3 days onsite) Contract Type: 6 month Inside IR35 £700–£750 per day The Role You will support the evolution of a large-scale financial data platform, modernising legacy enterprise systems while building scalable cloud-based services … backend services in Python or C# Modernise legacy platforms and improve system performance Build and maintain AWS-hosted services and APIs Collaborate with distributed engineering and product teams Top Skills Required Advanced SQL Server expertise (performance tuning, indexing, complex queries) – non-negotiable Backend development in Python or C# ...