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Top Software Engineer Jobs in London

1,270+ Job Results
2 Days Ago
London, UK
911 Employees
Senior level
911 Employees
Senior level
Blockchain • Fintech • Financial Services • Cryptocurrency • Web3
As a Staff Software Engineer on the Exchange team, you will build and maintain low latency, scalable exchange services, enhance system security, and collaborate with other teams to improve product quality. Your work will directly impact the growing cryptocurrency ecosystem, emphasizing high throughput and performance.
2 Days Ago
London, UK
911 Employees
Senior level
911 Employees
Senior level
Blockchain • Fintech • Financial Services • Cryptocurrency • Web3
As a Senior Software Engineer on the Orders team, you will develop and integrate APIs, advocate for best engineering practices, and optimize systems for scalability and performance. You will work collaboratively to deliver high-quality software that impacts millions, while ensuring security and excellent customer experience.
2 Days Ago
London, UK
1,200 Employees
Senior level
1,200 Employees
Senior level
Big Data • Cloud • Software • Database
The Senior Software Engineer will build and maintain data pipelines, ensuring technical excellence and mentoring junior team members. Responsibilities include writing integrations, enhancing features, conducting code reviews, and participating in on-call duties while adhering to best practices in software development.
2 Days Ago
London, UK
133 Employees
Mid level
133 Employees
Mid level
Artificial Intelligence • Edtech
As a Senior Software Engineer, you will be primarily coding, reviewing teammates' code, developing integration solutions, and building APIs within a serverless microservice architecture using Azure. You will also assist DevOps in product deployment and address complex customer-reported issues, while ensuring code quality and adherence to best practices.
2 Days Ago
London, UK
2,700 Employees
Entry level
2,700 Employees
Entry level
AdTech
As a Software Engineer on the SWAT team, you will troubleshoot complex problems, improve customer experiences, and develop tooling to enhance issue resolution processes. You'll work with various engineering teams and communicate technical issues to non-technical stakeholders. The role emphasizes learning new technologies quickly and innovating solutions.
2 Days Ago
London, UK
2,700 Employees
Senior level
2,700 Employees
Senior level
AdTech
As a Senior Software Engineer at The Trade Desk, you will contribute to building and maintaining backend infrastructure for a platform, focusing on petabyte-scale data and microservice architecture. You will mentor junior engineers while solving algorithmic and optimization challenges, collaborating on data processing pipelines and model deployments to help shape client advertising strategies.
2 Days Ago
London, UK
Remote
1,200 Employees
Senior level
1,200 Employees
Senior level
Big Data • Cloud • Software • Database
The Principal Software Engineer at Fivetran will lead the architecture and development of the Data Lake product. Responsibilities include designing large-scale data lake systems, partnering with product teams, contributing to open-source projects, analyzing performance issues, and ensuring operational excellence.
2 Days Ago
London, UK
841 Employees
Senior level
841 Employees
Senior level
Information Technology
As a Senior Full Stack Engineer, you will develop and maintain Dialpad's web and desktop applications using modern technologies, write clean and maintainable code, participate in code reviews, mentor junior engineers, and collaborate with cross-functional teams to deliver major features.
2 Days Ago
London, UK
1,200 Employees
Senior level
1,200 Employees
Senior level
Big Data • Cloud • Software • Database
The Senior Software Engineer will focus on building and maintaining data pipelines to transfer data from various sources to data warehouses, participating in code review and mentoring, and ensuring technical excellence in the team's services. Responsibilities include writing connectors, enhancing features, and troubleshooting issues.
2 Days Ago
London, UK
Remote
1,200 Employees
Senior level
1,200 Employees
Senior level
Big Data • Cloud • Software • Database
As a Principal Software Engineer at Fivetran, you'll lead the design and development of the Data Lake product, ensuring queryable data without transformations. Collaborate with product teams, build reliable large-scale data systems, and contribute to open-source projects while driving performance improvements and operational excellence.
2 Days Ago
London, UK
1,097 Employees
Senior level
1,097 Employees
Senior level
Big Data • Information Technology • Other • Security
As a Senior Software Engineer at Loqate, you will drive growth through technology, develop software for sales and marketing scalability, mentor other engineers, and collaborate across teams to enhance customer experience. The role focuses on experimentation and metrics-driven software development to achieve business goals.
2 Days Ago
London, UK
Remote
1,200 Employees
Senior level
1,200 Employees
Senior level
Big Data • Cloud • Software • Database
As a Principal Software Engineer at Fivetran, you will lead the design and development of the Data Lake product, improving its scalability and reliability while partnering with product teams to understand requirements. You will also focus on operational excellence and contribute to open-source projects.
2 Days Ago
London, UK
Remote
1,200 Employees
Senior level
1,200 Employees
Senior level
Big Data • Cloud • Software • Database
Collaborate with product teams to design and implement high-performance data lake systems. Lead technical architecture and ensure operational excellence, while addressing scalability, performance, and fault-tolerance issues across Fivetran's Data Lake product. Contribute to open-source projects and set technical directions for the development team.
2 Days Ago
London, UK
Remote
1,200 Employees
Senior level
1,200 Employees
Senior level
Big Data • Cloud • Software • Database
The Principal Software Engineer will lead the architecture, design, and development of Fivetran's Data Lake product. Responsibilities include collaborating with product teams, designing reliable data lake systems, contributing to open-source projects, ensuring operational excellence, and setting technical directions for cross-functional teams.
2 Days Ago
London, UK
Remote
6,766 Employees
Senior level
6,766 Employees
Senior level
Software
The Senior Frontend Engineer will develop and ship production code that impacts user experience and company growth. You'll collaborate with a cross-functional team to build user-centric solutions, conduct experiments for user behavior insights, and contribute to various projects to improve product adoption.
2 Days Ago
London, UK
24,265 Employees
Senior level
24,265 Employees
Senior level
Information Technology • Consulting
As a Senior Software Developer at Capita, you will be responsible for designing, testing, and implementing software programs. The role includes writing code, performing unit tests, maintaining code hygiene, and producing software builds. You will collaborate with others and provide guidance to junior team members while ensuring deliverables meet specifications.
2 Days Ago
London, UK
1,200 Employees
Senior level
1,200 Employees
Senior level
Big Data • Cloud • Software • Database
The Senior Software Engineer will develop automation solutions and custom tools to enhance productivity across the organization. Responsibilities include collaborating with teams, troubleshooting issues, maintaining documentation, and improving automation strategies.
2 Days Ago
London, UK
27 Employees
Senior level
27 Employees
Senior level
Artificial Intelligence • Software
As a Senior Software Engineer, you will develop AI-driven applications, collaborating with cross-functional teams to enhance user experiences. Responsibilities include designing both front-end and back-end components, optimizing web applications, troubleshooting software defects, and participating in code reviews.
2 Days Ago
London, UK
29 Employees
Mid level
29 Employees
Mid level
Security • Software
Join the plugins team to extract data using CloudQuery's open-source ELT framework. Responsibilities include working on source and destination plugins, leading projects from implementation to release, and supporting users with feature documentation and feedback.
2 Days Ago
London, UK
29 Employees
Senior level
29 Employees
Senior level
Security • Software
As a Senior Software Engineer at CloudQuery, you will design and maintain data pipelines, work closely with various teams to develop features, enhance the Core SDK, and contribute to both open-source and managed services. Your role will ensure data integrity and reliability while leading projects from ideation to release.
2 Days Ago
London, UK
652 Employees
Senior level
652 Employees
Senior level
Consumer Web • Marketing Tech
As a Senior Software Engineer at Uswitch, you will collaborate with cross-functional teams to enhance product delivery, utilize data for performance improvement, and drive the ideation and development of new features. You will maintain the full stack and optimize user experiences while fostering a diverse engineering culture.
2 Days Ago
London, UK
61 Employees
Senior level
61 Employees
Senior level
Artificial Intelligence • Software • Automation
As a Senior Software Engineer in the AI team at n8n, you'll design and build scalable backend systems while integrating AI applications. You'll engage with RESTful and GraphQL APIs and optimize relational databases. The role emphasizes ownership of tasks within a collaborative, remote-first environment.
2 Days Ago
London, UK
61 Employees
Senior level
61 Employees
Senior level
Artificial Intelligence • Software • Automation
As a Senior Software Engineer in Test, you'll design and maintain automated testing frameworks, own testing tools, develop test plans, and analyze software quality metrics while mentoring other team members. The role allows you to shape the testing approach in a fast-paced start-up environment.
2 Days Ago
London, UK
471 Employees
Mid level
471 Employees
Mid level
Blockchain • Software
As a Senior Prototype Engineer, you will design and develop systems based on initial ideas, present solutions in meetings, and communicate project statuses while working on innovation projects with various stakeholders.
2 Days Ago
London, UK
471 Employees
Senior level
471 Employees
Senior level
Blockchain • Software
As a Senior Software Engineer in Catalyst, you will develop high-quality software utilizing Rust, collaborate with teams across time zones, and follow agile practices. Your responsibilities include designing algorithms, writing efficient code with tests, integrating components, troubleshooting existing software, and documenting code extensively.
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