176 to 200 of 805 C# Jobs in London

Principal Software Engineer

Location
Greater London, England, United Kingdom
knowledge of SQL, databases, data modelling, and performance optimisation. Proven expertise in cloud and commerce technologies, including AWS. Strong background in Microsoft technologies, including C# .NET Extensive experience in observability, leveraging tools for monitoring metrics, telemetry, alerts, and logs to ensure system reliability and performance. Expertise in data architecture ...

Principal Software Engineer-AI

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent
including managing engineering managers, technical leads, and staff-level engineers with accountability for delivery outcomes across a portfolio Strong technical depth in TypeScript, Python, C#, or similar technologies, with the ability to engage credibly in architecture and code reviews, challenge design decisions, and assess technical risk Deep expertise in enterprise ...

Solutions Architect

Hiring Organisation
Euro Car Parks
Location
Central London, London, United Kingdom
Employment Type
Permanent
daily stand-up, team retros, sprint reviews, story-mapping, backlog refinement) helping the entire delivery team be the best that they can. Essential Skills: C# .NET Core, REST API Design and Development, API Management Document or No-SQL database solutions (particularly Elasticsearch) Messaging and microservices based architecture (Azure Service ...

Software Engineer (Structured Data)

Location
Greater London, England, United Kingdom
architecture and evolution of cloud-native data platforms Supporting platform performance, stability and scalability as TradingHub continues to grow Requirements Proficiency with C#, Python or Java Strong experience of working within financial markets Proficiency with SQL-related technologies Knowledge of AWS or other cloud native technologies Evidence of exceptional analytical ...

Engineering Manager, Security

Location
Greater London, England, United Kingdom
architecture: Define and enforce the security architecture across our Azure-native, Kubernetes-based platform. Govern security controls across the full stack: Kafka, .NET/C#, Vue.js, Kong API Gateway, Auth0, and Salesforce. Lead threat modelling, penetration testing, and vulnerability management programmes. Own identity and access management strategy, including Entra ...

Enterprise Architect

Location
Greater London, England, United Kingdom
integrating with platforms such as Salesforce, Reltio, legacy insurance systems, and data platforms. Experience with pro developer languages and enterprise low-code platforms (e.g. C#, YAML, XSLT, Liquid Templates, Logic Apps, RPA). Experience of AI Coding Tools such as Claude Code, Github Copilot Knowledge of working in a regulated ...

Senior Power Apps Engineer

Hiring Organisation
Inspire People
Location
South Croydon, London, United Kingdom
Employment Type
Permanent, Work From Home
Salary
£55,000
Power Platform components and infrastructure. In-depth knowledge of Power Apps, Power Automate, Power BI and Dynamics 365. Scripting or programming knowledge, such as C#, JavaScript, Python, Power Fx, HTML or CSS. Ability to identify and manage technical risk. Experience providing technical leadership, coaching or mentoring other engineers. Desirable criteria ...

Software Engineer (Structured Data)

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent, Work From Home
architecture and evolution of cloud-native data platforms Supporting platform performance, stability and scalability as TradingHub continues to grow Requirements Proficiency with C#, Python or Java Strong experience of working within financial markets Proficiency with SQL-related technologies Knowledge of AWS or other cloud native technologies Evidence of exceptional analytical ...

Technical Lead Developer

Location
Greater London, England, United Kingdom
maintain activities and transformative work by designing and developing new features. You will work with a wide range of technologies including Python, C#, Java, TypeScript, React, Terraform, and AWS/Azure. We always use the most suitable technology for each project, giving you the opportunity to learn and work with ...

Application Security Consultant

Location
Greater London, England, United Kingdom
/CD and DevSecOps environments . The ability to read and understand code in at least one major language such as Java, C, C++, C#, Python or similar. Knowledge of secure software development lifecycles and shift-left security practices. Experience with threat modelling , such as STRIDE or similar approaches. Understanding ...

Senior Software Engineer | Identity and Access Management | Full-Stack

Location
Greater London, England, United Kingdom
shaping, and solving hard product and technical challenges in collaboration with your team and other engineers Drive Technical Pragmatism: Whether using our core stack (C#/.NET Core, Kubernetes, Postgres) or exploring new tools, you choose the technology that solves the customer problem most effectively, ensuring long-term maintainability over ...

Senior Software Developer

Hiring Organisation
Appcast
Location
London, UK
schema design, and performance tuning.Proven track record of working with Docker and orchestration platforms like Kubernetes or OpenShift.Past experience with Java (JSF, ADF) or C# is a significant plus, providing valuable context for system migrations.Preferred Skills (Nice to Have)Experience working in high-velocity, Full Stack Agile environments.A passion ...

Software Engineer — Junior / Mid

Location
Greater London, England, United Kingdom
arrive fluent in it. We hire strong backend engineers who've built production systems with any robust framework — Java/Spring Boot, Go, Kotlin, C#/.NET, Python (Django/FastAPI) or Ruby on Rails — and can ramp into TypeScript fast. We care that you've built and operated real ...

Application Security Consultant

Hiring Organisation
Ricoh
Location
London, United Kingdom
Employment Type
Permanent
/CD and DevSecOps environments . The ability to read and understand code in at least one major language such as Java, C, C++, C#, Python or similar. Knowledge of secure software development lifecycles and shift-left security practices. Experience with threat modelling , such as STRIDE or similar approaches. Understanding ...

.Net Developer

Location
Greater London, England, United Kingdom
highly desirable. Experience in a development role, either client- or agency-side. Degree or equivalent in STEM or Computer Science discipline. Skills Required Talented C# developer (ASP.Net, MVC5) Solid experience of SOAP WebServices and RESTful WebAPIs Competent in use of SQL Server and T-SQL queries. Experience of .NET ORMs ...

Software Development Engineer II

Location
Greater London, England, United Kingdom
equivalent in relevant work experience. Experience in software development, including experience with at least one modern language such as Python, Java, C++, or C# including object-oriented design with an understanding of advanced design patterns. Experience in cloud-first design, preferably AWS (Serverless infrastructure, dynamic autoscaling, container orchestration, etc.). ...

Senior Software Engineer | Enterprise | Full-Stack

Location
Greater London, England, United Kingdom
employees. You will own the full vertical: from the user‐facing Admin Console in React to the distributed billing logic in C#/.NET. Your responsibilities Architect Revenue‐Critical Flows: You will design and ship complex, high‐stakes features like "Enterprise Licensing" or "Automated Seat Provisioning." You ensure that when ...

Principal Security Engineer, Product & Infrastructure

Location
Greater London, England, United Kingdom
adjacent project: Main sites in Paris, London, Toronto and NYC MacOS, Windows, Linux workstations GCP, Kubernetes, Terraform, Postgres, SingleStore, Vault Okta, OAuth, JWT, C#, .NET Core, TypeScript, React, Python, Go Datadog (SIEM), CloudFlare ZTNA, Falco, Wiz, Riot, HackerOne, TruffleHog Google Workspace, Jumpcloud, Vanta, Hibob, Slack GitHub, CircleCI, ArgoCD ...

Mid-Level Full-Stack Engineer - .NET/C# & React

Location
Greater London, England, United Kingdom
InvestorFlow in London seeks a skilled Full-Stack Software Engineer to design, develop, and maintain robust APIs and modern user interfaces. You will work across the stack with .NET Core, React, SQL Server, MongoDB, and ...

Senior .Net Developer

Location
Greater London, England, United Kingdom
key.The team needs a full stack developer who can enhance existing applications and write new ones with Angular front end (React is considered) and C# .Net backend.Main Responsibilities:Development• Use technology appropriately and flexibly, taking into consideration the company’s strategy and recommendations.• Adhere to the company’s standards … React (we use Angular), Typescript, JavaScript, HTML/CSS with an eye for good UX• Experience in designing and building distributed systems using Microsoft C#, .NET Core and Web API• Experience working with relational databases such as Oracle or SQL Server• Experience with deploying applications to Cloud infrastructure such ...

Software Developer | Capital Markets

Location
Greater London, England, United Kingdom
Summary As an experienced technical lead and full-stack software engineer specializing in both front-end and back-end development, expert in React or C# .NET with React and/or WPF, you will take a hands-on and leading role in the ongoing development of the Marex Equity Market … supervisor as required. Escalate risk events immediately. Provide input to risk management processes, as required. Competencies, Skills and Experience Skills and Experience: Essential: Engineering : C#, .Net, ASP.Net, React, JS/TS, HTML, CSS, SQL, WPF, Linux Tools/Technologies/Infra : NodeJS, cloud/AWS, RabbitMQ, AMQ, Mongo, Bitbucket ...

Senior Software Developer - C#/.NET - London, Hybrid or remote

Location
Greater London, England, United Kingdom
software development lifecycle while supporting high engineering standards within a collaborative team environment. Key Responsibilities: Design, develop, and enhance enterprise-level software solutions using C#, .NET/.NET Core, Razor, Web API, SQL Server, HTML, and JavaScript. Work closely with Product Owners, testers, UI/UX specialists, and Engineering colleagues … real difference to our customers. Proven experience as a Senior Developer within a SaaS or enterprise software environment. Strong hands‐on expertise in C#, .NET/.NET Core, and SQL/T‐SQL. Solid understanding of database design, performance optimisation, and query tuning. Experience delivering front‐end functionality using HTML ...

Senior C# Developer .Net AWS - FinTech

Hiring Organisation
Client Server
Location
City of London, London, United Kingdom
Employment Type
Permanent, Work From Home
Senior C# Developer/Software Engineer (C# .Net AWS Python) London/WFH to £100k Would you like to join a growing and profitable start-up that is viewed as a leading FinTech disruptor in a senior role that will allow you a great deal of influence and progression … Senior C# Developer you will architect and build highly performant and scalable solutions using the Microsoft tech stack and SOLID design principles, collaborating with cross functional Agile project teams in 2 week Sprints, you'll be an advocate of best practice and ensure software is delivered to schedule. There ...

Senior Software Engineer-AI

Hiring Organisation
Hackajob Ltd
Location
London, United Kingdom
Employment Type
Permanent
Salary
GBP Annual
years of software engineering experience designing, coding, testing, and operating production-grade backend services and cloud-native applications Strong coding proficiency in TypeScript, Python, C#, or similar technologies, with experience building scalable application programming interfaces, microservices, and distributed systems Practical experience building enterprise A click apply for full job details ...

Senior Full-Stack Lead Engineer — React/TypeScript & .NET

Location
Greater London, England, United Kingdom
Senior Full Stack Lead Engineer to guide a hybrid team across frontend and backend work, delivering robust, scalable solutions using ReactJS, TypeScript, JavaScript and C#/.NET. You will mentor engineers, shape engineering standards, collaborate across DevSecOps and SDLC, and drive architectural decisions in a regulated financial services environment. This ...