201 to 225 of 742 Software Engineering Jobs in the City of London

unstructured environments or broader roles where you can help define/design processes, future strategy etc. This is a great role for someone wanting to step up from an engineering lead into more of an Engineering Manager role over the coming years, helping grow the platform and team. *Candidates should be aware that this role is based in More ❯

Job title: Engineer II Location: London - Hybrid Salary: £53,500 - £72,000 Reporting to: Software Engineering Manager At this time, we are not able to offer visa sponsorship for this role. We are committed to building a diverse, global team and our sponsorship policy is evaluated on a role-by-role basis. We encourage you to keep an … into win-win-win outcomes for customers, suppliers and the energy system. What will I be doing? We’re a large team of both data-led and product focused Software and Production Engineers, pushing the boundaries of technology and working at an extraordinary scale. As a collective we strive for engineering greatness and by ensuring best practices across … and in real-time. Collaborate with product managers, designers, and engineers to build thoughtful, user-focused features. Write clean, maintainable code and participate in code reviews to support high engineering standards. Take ownership of smaller services or components, contributing to their delivery, performance, and improvement. Work with SQL or NoSQL databases to store and retrieve data effectively. Build and More ❯

Job title: Engineer II Location: London - Hybrid Salary: £53,500 - £72,000 Reporting to: Software Engineering Manager At this time, we are not able to offer visa sponsorship for this role. We are committed to building a diverse, global team and our sponsorship policy is evaluated on a role-by-role basis. We encourage you to keep an … into win-win-win outcomes for customers, suppliers and the energy system. What will I be doing? We’re a large team of both data-led and product focused Software and Production Engineers, pushing the boundaries of technology and working at an extraordinary scale. As a collective we strive for engineering greatness and by ensuring best practices across … and in real-time. Collaborate with product managers, designers, and engineers to build thoughtful, user-focused features. Write clean, maintainable code and participate in code reviews to support high engineering standards. Take ownership of smaller services or components, contributing to their delivery, performance, and improvement. Work with SQL or NoSQL databases to store and retrieve data effectively. Build and More ❯

Founding Software Engineer - Cybersecurity Start-Up - London Founding Software Engineer for an early-stage cybersecurity start-up redefining how organisations protect data and infrastructure. Join a founding team with a proven record of building successful start-ups, this is a chance to be part of something from the ground up. You’ll have 3+ years of professional Software Engineering experience Proficiency in programming languages such as Python, C#, TypeScript, Go or Java A start-up mentality: thrive in fast-paced environments, hungry to take ownership Strong problem-solving and collaboration skills London-based and in-office by default Why join Work alongside a world-class founding team with strong start-up success Competitive compensation Direct impact … and ownership from day one We’re looking for engineers excited to tackle some of the hardest challenges in cybersecurity. Founding Software Engineer - Cybersecurity Start-Up - London More ❯

Founding Software Engineer - Cybersecurity Start-Up - London Founding Software Engineer for an early-stage cybersecurity start-up redefining how organisations protect data and infrastructure. Join a founding team with a proven record of building successful start-ups, this is a chance to be part of something from the ground up. You’ll have 3+ years of professional Software Engineering experience Proficiency in programming languages such as Python, C#, TypeScript, Go or Java A start-up mentality: thrive in fast-paced environments, hungry to take ownership Strong problem-solving and collaboration skills London-based and in-office by default Why join Work alongside a world-class founding team with strong start-up success Competitive compensation Direct impact … and ownership from day one We’re looking for engineers excited to tackle some of the hardest challenges in cybersecurity. Founding Software Engineer - Cybersecurity Start-Up - London More ❯

production-grade machine learning solutions while contributing to the strategic growth of AI-driven products. The successful candidate will join a multidisciplinary, globally distributed team and collaborate closely with Software Engineers, Product Managers, and other stakeholders. The role requires strong mathematical and statistical foundations, excellent software engineering skills, and proven expertise in modern machine learning techniques, including … Transformer architectures, and Large Language Models (LLMs). Demonstrated success delivering Computer Vision and/or NLP/LLM projects into production. Solid understanding of model deployment, pipelines, and software development fundamentals. Expertise in Deep Learning, including training, evaluation, and optimisation. Strong grounding in mathematics, statistics, and data analysis. Experience working in Agile environments. Familiarity with technologies such as More ❯

Java Developer (Middle Office) We’re seeking a skilled Java Developer to join a Middle Office Technology team at a leading global brokerage. This is a fantastic opportunity to work on complex, business-critical systems that support trade lifecycle management More ❯

to ensure meaningful business impact. Projects may include building a digital high net worth insurance product or a portfolio analysis tool. Key Responsibilities * Participate in all phases of the software development lifecycle * Design and document solutions following internal delivery frameworks * Adhere to coding, testing, and design standards and best practices * Collaborate with testing teams during product testing and user … acceptance * Support deployment activities across environments * Provide regular updates on progress, risks, and issues * Troubleshoot and resolve operational issues promptly * Pursue certifications to enhance software engineering skills Candidate Profile * Familiarity with the insurance industry * Proficiency in Python for traditional data science * Experience with generative AI tools, especially Gemini * Knowledge of cloud platforms such as Azure or GCP * Ability More ❯

with high-growth clients. Now we’re looking for a Founding Engineer to help us scale from concept to category-defining product. The Role As one of the first engineering hires, you’ll play a key role in shaping our technical direction, architecture, and engineering culture. You’ll work directly with the founding team to design and build … a direct impact on both technology and company growth. What You’ll Do Build, test, and ship core product features from day one Shape technical architecture and long-term engineering strategy Collaborate closely with founders on product and business decisions Help define the engineering culture and future hiring roadmap What We’re Looking For Strong software engineering More ❯

with high-growth clients. Now we’re looking for a Founding Engineer to help us scale from concept to category-defining product. The Role As one of the first engineering hires, you’ll play a key role in shaping our technical direction, architecture, and engineering culture. You’ll work directly with the founding team to design and build … a direct impact on both technology and company growth. What You’ll Do Build, test, and ship core product features from day one Shape technical architecture and long-term engineering strategy Collaborate closely with founders on product and business decisions Help define the engineering culture and future hiring roadmap What We’re Looking For Strong software engineering More ❯

Opportunity & Requirement Summary 📛 Role | Python Software Engineer 🔵 Company | Growing SaaS Software Provider 📏 Size | 15–20 employees 📍 Location | London (Hybrid – 3 days per week in the office) 💰 Offer | £60,000 – £90,000 + share options + benefits Detailed Overview Kioni Talent is partnering with an innovative SaaS company that’s helping businesses streamline complex workflows through their intelligent software platform. They’re now looking for a Python Software Engineer to join their close-knit team and play a key role in building and scaling the backend that powers their core product. You’ll be joining a collaborative engineering team of experienced developers, product thinkers, and problem-solvers — all passionate about writing clean, scalable code and continuously … key contributor in a product-led SaaS company during a high-growth phase Influence technical direction and tooling choices Help shape best practices and contribute to a culture of engineering excellence Work on meaningful challenges that have a direct impact on customers 👩 💻 What You'll Need Strong experience with Django or FastAPI Solid understanding of RESTful APIs and database More ❯

Opportunity & Requirement Summary 📛 Role | Python Software Engineer 🔵 Company | Growing SaaS Software Provider 📏 Size | 15–20 employees 📍 Location | London (Hybrid – 3 days per week in the office) 💰 Offer | £60,000 – £90,000 + share options + benefits Detailed Overview Kioni Talent is partnering with an innovative SaaS company that’s helping businesses streamline complex workflows through their intelligent software platform. They’re now looking for a Python Software Engineer to join their close-knit team and play a key role in building and scaling the backend that powers their core product. You’ll be joining a collaborative engineering team of experienced developers, product thinkers, and problem-solvers — all passionate about writing clean, scalable code and continuously … key contributor in a product-led SaaS company during a high-growth phase Influence technical direction and tooling choices Help shape best practices and contribute to a culture of engineering excellence Work on meaningful challenges that have a direct impact on customers 👩 💻 What You'll Need Strong experience with Django or FastAPI Solid understanding of RESTful APIs and database More ❯

A Python Backend Engineer is needed to join growing software house in London who specialise in helping businesses reduce wasteful processes, costs and energy; and improve their ROI. sustainability meets profitability. Our client aims to change how corporate finance works, by replacing static, limited and often stale financial metrics with live data-driven insights sourced from direct connections to … will be joining a strong team of Backend Python Engineers, Data Scientists, and financial experts, who are building the next generation of financial tools. If you're an experience Software Engineer whose passionate about Python, excited by financial technology, and wants to solve complex problems, this could be for you. As a Python Software Engineer, you will contribute … subject from a Top ranked University 3+ years of experience in Python development Tech: Python, FastAPI, Pydantic, PostgreSQL, Numpy, Pandas, AWS DevOps tools: Kubernetes, Docker,Terraform, Jenkins Very strong software engineering principles Enthusiasm for startup environment and cross-functional teams Passion for automation and data infrastructure More ❯

A Python Backend Engineer is needed to join growing software house in London who specialise in helping businesses reduce wasteful processes, costs and energy; and improve their ROI. sustainability meets profitability. Our client aims to change how corporate finance works, by replacing static, limited and often stale financial metrics with live data-driven insights sourced from direct connections to … will be joining a strong team of Backend Python Engineers, Data Scientists, and financial experts, who are building the next generation of financial tools. If you're an experience Software Engineer whose passionate about Python, excited by financial technology, and wants to solve complex problems, this could be for you. As a Python Software Engineer, you will contribute … subject from a Top ranked University 3+ years of experience in Python development Tech: Python, FastAPI, Pydantic, PostgreSQL, Numpy, Pandas, AWS DevOps tools: Kubernetes, Docker,Terraform, Jenkins Very strong software engineering principles Enthusiasm for startup environment and cross-functional teams Passion for automation and data infrastructure More ❯

seamless experience that emphasises simplicity, efficiency, and rapid execution. Our goal is to remove obstacles, enabling you to achieve success faster and more effectively. Role Overview As a Senior Software Engineer, you will play a pivotal role in architecting and developing our next-generation web application and API. This role requires technical leadership, hands-on development, and mentoring of … junior developers. You will drive the adoption of best practices, ensuring scalability, security, and performance. If you are passionate about software development, enjoy solving complex problems, and are ready to lead innovative projects, we encourage you to apply. Join our dynamic team and contribute to building transformative solutions that make a tangible impact. This role will be eligible for … Qualifications and Key Skills Education: Bachelor’s in Computer Science or related field from a Tier 1 university. Experience: Minimum of 4 years of full-time professional experience in software development, with strong expertise in TypeScript, ReactJS, and Next.JS. Solid experience in building RESTful APIs Leadership: Proven track record of leading development teams and managing large-scale projects. Database More ❯

seamless experience that emphasises simplicity, efficiency, and rapid execution. Our goal is to remove obstacles, enabling you to achieve success faster and more effectively. Role Overview As a Senior Software Engineer, you will play a pivotal role in architecting and developing our next-generation web application and API. This role requires technical leadership, hands-on development, and mentoring of … junior developers. You will drive the adoption of best practices, ensuring scalability, security, and performance. If you are passionate about software development, enjoy solving complex problems, and are ready to lead innovative projects, we encourage you to apply. Join our dynamic team and contribute to building transformative solutions that make a tangible impact. This role will be eligible for … Qualifications and Key Skills Education: Bachelor’s in Computer Science or related field from a Tier 1 university. Experience: Minimum of 4 years of full-time professional experience in software development, with strong expertise in TypeScript, ReactJS, and Next.JS. Solid experience in building RESTful APIs Leadership: Proven track record of leading development teams and managing large-scale projects. Database More ❯

Role: Python Software Developer - Treasury Location: London Industry: Hedge Funds Overview: A global multi-strategy hedge fund is looking to add an experienced Python Developer to join their Treasury team in London. The firm operates at hedge fund scale with a start-up pace, focusing on building high-performance trading platforms. In this role, you will design and develop … systems, ensuring uptime and quick incident response. Identify technology gaps and inefficiencies, experimenting with new tools and design patterns to enhance speed and quality. Experience: 5-15 years of software engineering experience, ideally in Treasury or from a hedge fund/buy-side firm Expertise in Python for designing and optimising complex applications Strong proficiency in data tools More ❯

Role: Python Software Developer - Treasury Location: London Industry: Hedge Funds Overview: A global multi-strategy hedge fund is looking to add an experienced Python Developer to join their Treasury team in London. The firm operates at hedge fund scale with a start-up pace, focusing on building high-performance trading platforms. In this role, you will design and develop … systems, ensuring uptime and quick incident response. Identify technology gaps and inefficiencies, experimenting with new tools and design patterns to enhance speed and quality. Experience: 5-15 years of software engineering experience, ideally in Treasury or from a hedge fund/buy-side firm Expertise in Python for designing and optimising complex applications Strong proficiency in data tools More ❯

to deliver scalable, secure, and fault-tolerant applications Drive performance tuning, code reviews, and architectural improvements across the stack What We’re Looking For 5–8+ years of professional software engineering experience 3–5+ years of hands-on experience with Rust in production environments Strong understanding of systems programming , concurrency , networking , and low-level performance optimisation Experience with More ❯

to deliver scalable, secure, and fault-tolerant applications Drive performance tuning, code reviews, and architectural improvements across the stack What We’re Looking For 5–8+ years of professional software engineering experience 3–5+ years of hands-on experience with Rust in production environments Strong understanding of systems programming , concurrency , networking , and low-level performance optimisation Experience with More ❯

collaborating in a ‘one-team’ approach, and working within highly regulated environments such as telecoms or government. Excellent analytical, verbal, and written communication skills, with a solid grasp of software engineering principles and compliance with legal, technical, and audit requirements. Security Clearance: Security Check (SC) clearance is required for this role. To be successfully appointed, candidates must have More ❯

collaborating in a ‘one-team’ approach, and working within highly regulated environments such as telecoms or government. Excellent analytical, verbal, and written communication skills, with a solid grasp of software engineering principles and compliance with legal, technical, and audit requirements. Security Clearance: Security Check (SC) clearance is required for this role. To be successfully appointed, candidates must have More ❯

delivery. Creating reusable technical assets like reference architectures and solution templates. Communicating effectively with stakeholders, translating business needs into technical outcomes. What We’re Looking For 5+ years of software engineering experience, ideally with C# and/or Python . Strong hands-on experience with Azure services (App Services, Functions, Logic Apps, etc.). Familiarity with DevOps practices More ❯

delivery. Creating reusable technical assets like reference architectures and solution templates. Communicating effectively with stakeholders, translating business needs into technical outcomes. What We’re Looking For 5+ years of software engineering experience, ideally with C# and/or Python . Strong hands-on experience with Azure services (App Services, Functions, Logic Apps, etc.). Familiarity with DevOps practices More ❯

performance optimisation, and immersive sports analytics. THE ROLE Design, develop, and deploy AI/ML models focused on sports analytics, predictive modelling, and computer vision. Collaborate with data scientists, software engineers, and sports analysts to translate real-world data into actionable insights. Optimise AI systems for real-time environments, integrating with live data feeds and cloud infrastructure. Research and More ❯