At a Glance
- Tasks: Design and build scalable back-end services while enhancing user experience on the front end.
- Company: Join The Stepstone Group, a leader in fair and equitable hiring across 30+ countries.
- Benefits: Enjoy 29 days holiday, private healthcare, hybrid working, and a dog-friendly office.
- Other info: Be part of a diverse team committed to inclusion and professional growth.
- Why this job: Make a real impact in reshaping the labour market with innovative technology.
- Qualifications: Expertise in C#, .NET Core, and modern JavaScript frameworks required.
The predicted salary is between 60000 - 80000 € per year.
Company Description
At The Stepstone Group, we have a simple yet very important mission: The right job for everyone. Using our data, platform, and technology, we create opportunities for jobseekers and companies around the world to find a perfect match in a fair and equitable way. With over 20 brands across 30+ countries, we strive for fair and unbiased hiring. Join our team of 3,000+ employees and be part of reshaping the labour market and becoming the world’s leading job platform.
Job Description
We are looking for a Senior Full Stack Engineer with a strong back-end focus to join one of our Profile domain product teams. This role is full stack by design: you will work across back-end and front-end codebases, contributing to end-to-end product delivery. However, your primary strength will be in back-end engineering using C# and .NET Core in cloud-native AWS environments, while still being confident and hands-on on the front end.
You will join an established, autonomous product team owning their product end-to-end, with real ownership over technical design, implementation, and continuous improvement.
Your responsibilities
- Design, build and evolve scalable back-end services using C# and .NET Core, alongside developing front-end features with modern JavaScript frameworks to enhance user experience.
- Design and implement RESTful APIs, ensuring high standards of performance, reliability and security.
- Build, deploy and operate services in AWS using Docker and Infrastructure as Code, ensuring solutions are production-ready, secure, observable and well-tested.
- Contribute to solution and architecture design, balancing rapid delivery with long-term sustainability, while actively reducing technical debt and improving code quality across the stack.
- Collaborate cross-functionally with Product, QA and engineering teams to deliver end-to-end features, while mentoring and upskilling engineers in modern .NET, cloud and full stack practices.
Qualifications
- Back-end (Primary Focus): Expert in C# and .NET Core with strong experience in MVC, REST API design and best practices; deep knowledge of AWS/cloud computing, microservices, CQRS, event-driven and message-based architectures; experienced with SQL Server, PostgreSQL and Docker-based containerised workloads.
- Front-end (Required): Strong experience building user-facing web applications using Node.js, React and TypeScript; solid understanding of HTML, CSS and build tooling (e.g. Webpack); awareness of AI tooling best practices and agentic AI frameworks; able to collaborate effectively with design and product teams to deliver performant, user-centric interfaces.
- DevOps, Quality & Security: Strong DevOps and CI/CD expertise with tools such as Bamboo, TeamCity and Octopus; hands-on experience with Infrastructure as Code (Terraform), observability tooling (Grafana, Kibana, Datadog, CloudWatch), automated testing (NUnit, xUnit, Cypress, Playwright), Git-based workflows, and secure development practices including OWASP, secrets management and Vault.
- Ways of Working: Comfortable in Scrum/Kanban environments with strong communication skills; experienced with Jira, Confluence, Slack and MS Teams; fluent in English and effective in distributed international teams; able to work aligned to GMT hours (08:00–17:00).
- Desirable Skills: Experience with HashiCorp tooling (Terraform, Vault, Envconsul), Nginx for reverse proxying and routing, and messaging platforms such as Kafka or AWS SQS/SNS.
Additional Information
Your benefits
- 29 days holiday allowance + bank holidays
- Private medical and dental healthcare
- Matching pension contribution of 4 or 5% (after 3 years of service up to 10%)
- 24/7 Employee Assistance Programme
- Life Assurance Cover
- Cycle to work scheme
- Hybrid working model (3 days working from the office)
- Volunteering days
- Bring your dog to the office on Mondays and Fridays!
Our commitment
Equal opportunities are important to us. We believe that diversity and inclusion at The Stepstone Group are critical to our success as a global company, so we want to recruit, develop, and keep the best talent. We encourage applications from everyone, regardless of background, gender identity, sexual orientation, disability status, ethnicity, belief, age, family or parental status, and any other characteristic. As a global business we further our DEI and sustainability progress by working with national and international bodies and are proud to have been recognised for our work - both locally and internationally.
Recognitions include:
- Armed Forces Covenant: Silver Award
- Employer Recognition Scheme
- EcoVadis: Bronze Award
- Fertility Friendly Employer, accredited by Fertility Matters at Work
- RIDI (Recruitment Industry Disability) Awards: Inclusive Technology Award 2024
- Stonewall: Gold Award
- Stonewall: Top 100 Workplace Equality Index (85)
Senior Software Engineer in London employer: StepStone Group
At The Stepstone Group, we pride ourselves on fostering a supportive and inclusive work environment that prioritises employee well-being and professional growth. With a strong commitment to work-life balance, generous benefits including private healthcare and a hybrid working model, and a culture that values diversity and innovation, we empower our Senior Software Engineers to thrive in their roles while contributing to reshaping the global labour market.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer in London
✨Tip Number 1
Network like a pro! Reach out to your connections on LinkedIn or attend industry meetups. You never know who might have the inside scoop on job openings or can refer you directly to hiring managers.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those using C# and .NET Core. This gives potential employers a taste of what you can do and sets you apart from the crowd.
✨Tip Number 3
Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your skills and boost your confidence before the big day.
✨Tip Number 4
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen. Plus, we love seeing candidates who are proactive about their job search!
We think you need these skills to ace Senior Software Engineer in London
Some tips for your application 🫡
Tailor Your CV:Make sure your CV is tailored to the Senior Software Engineer role. Highlight your experience with C# and .NET Core, as well as any relevant cloud-native AWS projects you've worked on. We want to see how your skills match our needs!
Craft a Compelling Cover Letter:Your cover letter is your chance to shine! Share your passion for software engineering and how you can contribute to our mission. Don’t forget to mention your experience in both back-end and front-end development – we love a well-rounded engineer!
Showcase Your Projects:If you've got any personal or professional projects that demonstrate your skills, make sure to include them. Whether it's a GitHub repo or a live application, we want to see what you've built and how you approach problem-solving.
Apply Through Our Website:We encourage you to apply directly through our website. It’s the best way to ensure your application gets into the right hands. Plus, it shows us you're keen on joining our community at The Stepstone Group!
How to prepare for a job interview at StepStone Group
✨Know Your Tech Stack
Make sure you’re well-versed in C# and .NET Core, as these are your primary tools. Brush up on your knowledge of AWS, Docker, and RESTful APIs, and be ready to discuss how you've used them in past projects.
✨Showcase Your Full Stack Skills
Even though the focus is on back-end, don’t forget to highlight your front-end experience with frameworks like React and Node.js. Be prepared to talk about how you’ve integrated both sides in previous roles.
✨Prepare for Problem-Solving Questions
Expect questions that test your ability to design scalable systems and manage technical debt. Think through some scenarios where you had to balance rapid delivery with long-term sustainability.
✨Emphasise Collaboration and Mentorship
This role involves working closely with cross-functional teams. Share examples of how you’ve collaborated with product and QA teams, and any experiences mentoring junior engineers in modern practices.
