1 to 25 of 199 Senior Jobs in the City of London

Joining our team you will be jointly responsible for the design, development, and maintenance of secure, scalable software systems powering both internal and external products and services related to AgeChecked frontend, AgeChecked for Ecommerce, AgeAware ...

Software Engineer London/Hybrid | Perm Role £80,000 - £100,000 Harrington Starr has partnered with a fast-growing fintech that’s transforming how businesses manage foreign exchange and treasury operations. Their technology enables clients ...

AdvisoryAI is building the AI co-pilot that's transforming wealth management. We automate the tedious middle-office work that buries financial advisors, freeing them to focus on what matters: their clients. Founded by Entrepreneur ...

Growing financial services software provider based in Liverpool Street. Hybrid working - 2 days on site - flexible - friendly team culture. Solid full stack software development - C#/.Net, SQL, HTML, CSS, JS, Azure Hybrid working - 2 ...

AdvisoryAI is building the AI co-pilot that's transforming wealth management. We automate the tedious middle-office work that buries financial advisors, freeing them to focus on what matters: their clients. Founded by Entrepreneur ...

Do you want to build production GenAI products (not prototypes) in a business with real scale and board-level visibility? Have you shipped LLM/RAG systems end-to-end and owned them in production ...

Technology Integration Specialist £130,000£150,000 London | Hybrid | Permanent Ncounter is supporting a global technology-driven investment firm in hiring a Technology Integration Specialist to join a highly collaborative team that bridges development, infrastructure ...

Your new role - Permanent - ON SITE 5 Days per week. You will be required to undergo vigorous onboarding checks - UK Only. Sponsorship NOT available. The main purpose of this job mainly focusses on information security ...

This role is with one of Dex’s trusted Partner companies. We work closely with their teams to truly understand their culture, goals, and what they’re looking for, so we can match you with ...

Role Overview The Delivery Support Engineer will support Bridging Loans automation initiatives and ensure resilience and redundancy of the Payments Platform . The role involves a mix of direct delivery work and BAU support by ...

Role Overview The Delivery Support Engineer will support Bridging Loans automation initiatives and ensure resilience and redundancy of the Payments Platform . The role involves a mix of direct delivery work and BAU support by ...

A leading ESG Data firm focusing on AI is seeking a talented and experienced Lead Software Engineer to join their growing technology team in London. In this role, the successful candidate will play a key ...

Lead Developer London - Hybrid 1/2 days in office £85,000 - £100,000 About Simmer We’re Simmer Eats, one of Europe’s fastest-growing food brands. We’ve grown 10x in the last ...

Senior Software Engineer (Python - FastAPI) This fast-growing consultancy is pushing the boundaries of AI and data science, helping clients turn complex challenges into scalable, production-ready solutions. They’re now hiring a Senior Software Engineer who can blend deep technical expertise with a practical, delivery-focused mindset. Role Overview ...

SeniorSoftwareEngineer (.Net&Angular)-£70,000£85,000pa%Bonus+Benefits Iamworkingwithaleadingprofessional servicesclientinLondonthatarelookingforaSeniorSoftwareEngineerwithfullstackcapabilitiesto join a small but talented team. The team is responsible for maintaining and developing the organisations core platform click apply for full job details ...

Position: Lead Rust Engineer Layer 1/DeFi Location: Remote Salary: $275k - $ 300k base One of Plexus' clients develops high-performance trading infrastructure that bridges on-chain execution and real-time data analytics. Their platform ...

Senior Full-Stack Engineer (Java & Python) We are seeking a high-impact Senior Full-Stack Engineer to join a growing technology team for a leading investment house supporting market data services within a regulated, enterprise environment. This role sits at the intersection of data engineering, full-stack development, and business ...

We're building the next generation of platform for one of the UK's largest financial services companies, trusted by over 1.8 million clients and managing £130+ billion in assets. This is your opportunity to ...

Position: Lead Rust Engineer Layer 1/DeFi Location: Remote Salary: $275k - $ 300k base One of Plexus' clients develops high-performance trading infrastructure that bridges on-chain execution and real-time data analytics. Their platform ...

SeniorFullStackEngineerTypescript,C#,AWS,IAM,Security OutstandingopportunitytojointhisglobalB2BSaaSleaderasaSeniorFullStackEngineerwithsomesecurityandIAMexposurerequiredtodevelopAPIstoconnecttheirIAMsolutiontotheircoreapplications.ThispermanentroleoffersthechancetoshapehowfullstackapplicationsembraceZeroTrustauthenticationandauthorizationservicesinacutting-edge,AI-drivenenvironment. AbouttheRole: Buildfull-stackAPIsandintegrationsinTypeScript,C#,AWSIAM Deliversecurelogin,SSO,MFA,RBAC/ABAC,andtenantisolationatscale,leveragingAWSservices(Lambda,IAM,CloudFront,APIGateway,CDK) CollaborateacrossProduct,Security,andEngineeringteams,embedidentityintonewfeatures,andupholdengineeringexcellencethroughCI/CD,testing ...

Do you want to get on the AI train? This is your chance. You're going to be coming in to build out various AI solutions, specifically LLM/GenAI products that have been designed ...

My client is a leading provider of Audio Visual Integration and Smart Building technologies across the Corporate, Commercial and High-End Residential markets. Specialising in the end-to-end integration of Audio Visual and Video ...

Senior Software Engineer 📍 Location: Onsite, London, United Kingdom ⌛ Type: Full-time 💰 Compensation: Negotiable (Competitive salary + equity) About Ontik Ontik is an ambitious, early-stage B2B financial operations platform designed to streamline and simplify complex financial workflows for heavy duty industries. We’re scaling rapidly and looking for top-tier ...

Senior Data Engineer – Azure ** 5 days a week onsite - Central London ** £70,000 - £80,000 per annum About the Role One of the UK’s leading insurers are looking for a Senior Data Engineer with a primary focus on Azure to lead the design and implementation of scalable, enterprise-grade ...

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 integrated throughout ...