126 to 150 of 201 Software Engineering Jobs in the City of London

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 ...

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 ...

months and is to start as soon as possible and requires someone with a very strong understanding of roles such as software engineering, cloud, infrastructure, cybersecurity, data, and AI.Key areas of responsibility include: Develop a strong pipeline of talent for current and future vacancies Ensure a positive candidate ...

months and is to start as soon as possible and requires someone with a very strong understanding of roles such as software engineering, cloud, infrastructure, cybersecurity, data, and AI. Key areas of responsibility include: Develop a strong pipeline of talent for current and future vacancies Ensure a positive ...

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 ...

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 ...

Software Engineer Location: London Hybrid Model: 2–3 days in-office. Salary: £70,000 - £80,000 The Opportunity: Innovation at Enterprise Scale Join a leader in satellite communications that powers everything from high-speed home broadband to advanced connectivity for the aviation, energy, and government sectors. Within this leader … agility of a startup but the mandate and resources of a major enterprise. We are looking for a sharp, proactive, and adaptable Full Stack Software Engineer to join a high-trust, high-autonomy team. This isn’t just a "coding" job, you will be architecting revenue growth. Our mission ...

Senior Software Engineer (Python) | Hybrid/London | £85,000 + Equity High-growth InsurTech modernising how underwriting and risk decisions are made. This is a key hire as the business scales its core platform, with backend engineering and AI-enabled workflows central to how the product evolves. ...

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 ...

build custom architecture at the cost and speed of mass production - unlocking even the most complex sites. We’re currently seeking a Principal Platform Software Engineer to join our team, focused on shaping the system architecture and delivering software that defines the mobility, manipulation, autonomy, and reliability … robotic systems. Responsibilities: Defining software architecture for robotic mobility, manipulation, autonomy, and platform tooling; Developing and maintaining production-grade software in Modern C++ and Python for embedded Linux environments; Designing APIs, abstractions, and reusable libraries that support reliable and scalable robotic systems; Building software for task ...

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 ...

Software Engineer/Developer (C# .Net AWS) Relocate to Bermuda! Are you a full stack technologist with a product based mindset? You could be progressing your career in a life changing opportunity to relocate to Bermuda, in a hands-on Software Engineer role at a tech driven, global … Asset Manager with multiple billions of dollars under management. As a Software Engineer from day one, you will work on challenging, high-impact problems at the intersection of technology and global markets. You will design, build and operate performant, scalable systems that are critical to the trading and investment ...

Contract Senior Software Engineer (Java or Python) | Inside IR35 Contract length: 6 months (with potential to extend) Location: London Working Environment: On-site You will be joining a private equity firm as a senior software engineer, to work across the following responsibilities: Develop and support P&L, accounting … Claude, Cursor, or GitHub Copilot Demonstrable examples where AI tooling reduced delivery time by 2x or more on a meaningful task Strong prompt engineering skills and the ability to critically evaluate AI-generated code for correctness, security, and financial accuracy Desirable, but no essential: Experience with Apache Airflow ...

Senior Software Engineer - Remote (UK) - £85k-90k We are supporting a rapidly scaling AI driven fintech organisation in their search for a Senior Software Engineer to strengthen their UK based engineering function. This role offers the opportunity to contribute to real world AI enabled products that … interfaces using React Partner with product leaders and AI specialists to translate concepts into stable, deployable solutions Contribute to system reliability, performance optimisation and engineering best practice Tech Stack: Backend: Python (FastAPI, Flask, Django or equivalent) Frontend: React and modern JavaScript tooling Cloud: AWS (Lambda, ECS/Fargate ...

Senior Software Engineer (TypeScript/Python, FinTech, AI) London (Hybrid) £95,000 The Opportunity Join a high-growth, regulated fintech building next-generation infrastructure at the intersection of traditional finance and digital assets . The platform enables institutional clients to trade, tokenise, and manage real-world financial assets … complex, high-performance systems used by banks, asset managers, and financial institutions globally. The Role You’ll be part of a high-calibre engineering team building scalable, secure systems that power a modern financial marketplace. Responsibilities include: Designing and building low-latency, high-throughput backend services Developing APIs ...

looking for an Infrastructure Software Engineer to help keep our clients' systems reliable, secure, and scalable. This is a hands-on role working across a broad stack - from Linux servers and networking to containers and big data platforms - with a strong focus on automation and problem-solving. The successful … data systems (e.g., Spark, HDFS, Airflow) Summary A great opportunity for someone who enjoys solving complex infrastructure challenges, automating systems, and working closely with engineering teams. Spectrum IT Recruitment (South) Limited is acting as an Employment Agency in relation to this vacancy. ...

Principal Software Engineer/Developer (Java SpringBoot AWS) London/WFH to £120k Are you an experienced Java focussed Software Engineer, with technical project leadership and client facing skills? You could be progressing your career at a global technology consultancy. As a Principal Software Engineer you will … migrating legacy systems to AWS and introducing CI/CD pipelines and cloud deployments. You'll join a collaborative team with a focus on engineering best practice and continuous improvement of client systems; you will have lots of business and client exposure, leading projects and providing expertise. Location/ ...

Graduate Software Developer/Quantitative Developer/Quantitative Researcher 📍 Location: London (Hybrid) 💷 Compensation: Up to £180,000 + Bonus + Benefits 🏢 Client: Prestigious Fund 🚀 Kickstart Your Career in Technology & Quantitative Finance Just graduated and ready to launch your career at the intersection of technology, mathematics, and finance Join … Learn fast, build fast: develop technical and analytical expertise in a performance-driven culture ✅ What You’ll Bring 🎓 Degree in Computer Science, Mathematics, Physics, Engineering , or another STEM discipline 💻 Strong programming skills in Python, C++, Java, C#, or KDB+/Q 🔍 Analytical mindset with a passion for tackling complex ...

Senior Software Engineer Hayes, London Hybrid We are looking for a Senior Web Application Developer with 5+ years of experience in building and maintaining scalable, high-quality applications to join our growing tech team. As a senior member, you’ll play a key role in driving technical decisions, mentoring … with various testing methodologies (e.g., unit, integration, end-to-end) and a commitment to writing well-tested code. A commitment to robust and reliable software delivery, including familiarity with practices like no-downtime deployments, proactive monitoring, and identifying potential risks. Proven ability to lead technical initiatives from concept ...

Senior Software Engineer | Java | AI | London | £500-£600/day About the Role We are seeking an exceptional Senior Software Engineer with expertise in Java and AI to join our client, an established financial services brand, on a 6-month contract Outside IR35. This is a unique opportunity … Senior Software Engineer to work at the cutting edge of AI-driven development. The Opportunity As a Senior Software Engineer, you'll join a small, innovative team modernising and simplifying critical legacy services using cutting-edge AI tooling. You'll demonstrate what's possible when AI is deeply ...

Senior Software Engineer Contract to Permanent Hybrid (London) Rates negotiable Most backend systems look fine on paper until they hit production. This role is about building services that actually work at scale, under real user demand. Why This Role Leading major media/streaming end client Real production impact … Supporting and improving existing production systems Debugging real-world issues and keeping systems stable at scale Collaborating within an existing team + codebase (pragmatic engineering) Tech Stack Python AWS (Lambda, API Gateway, S3, DynamoDB, IAM) Event-driven systems (Kafka, SNS/SQS) Databases (Postgres, DynamoDB, Couchbase) CI/ ...

Java/Microservices/API design/LLMs/AI/Claude Code/Copilot Role: Senior Software Engineer Company: Financial Services Location: London - Hybrid 3 days per week Salary: up to £120,000 Join a Service Modernisation team driving AI-first software development in financial services. This … hands-on role modernising high-impact legacy services while building AI-powered engineering workflows. What You'll Do Modernise critical legacy Java services using AI-driven analysis and refactoring Apply migration patterns (e.g. strangler fig) to deliver clean, modern APIs Ship improvements in fast cycles with measurable gains ...

Senior Software Engineer Are you a developer who loves building products, not just features? Do you thrive at the intersection of robust backend logic, intuitive frontend interfaces, and conversational AI? Are you excited to join a fast-growing, seed-funded startup transforming construction procurement? If you want … small, ambitious team of 10 that moves fast, trusts each other, and enjoys building genuinely impactful technology. Your Role As a Senior Software Engineer you won’t just be ticket-crunching. You will own the end-to-end experience of our platform. You’ll be responsible for architecting scalable ...

optimization, ranking and recommendation. What You’ll Do Within the Sharechat AI team, we are looking for an experienced Staff engineer to lead the engineering efforts around serving personalization models efficiently at scale, leading efforts across 10+ MLEs, SDEs and decision scientists working on feed ranking and candidate generation … changing, and we’re making big progress at a rapid pace. Who are you? 8+ years of industry experience with a solid understanding of engineering, infrastructure and ML best practices. Strong coding skills with Go or JAVA Design and help develop systems that serve recommendations to over 300 million ...