At a Glance
- Tasks: Join our Signals Team to develop secure, scalable applications for digital identity and authentication.
- Company: Innovative tech company focused on cutting-edge identity verification solutions.
- Benefits: Competitive salary, hybrid work model, and opportunities for professional growth.
- Other info: Collaborative environment with a focus on secure coding and innovative technology.
- Why this job: Make a real impact by working on critical identity verification projects worldwide.
- Qualifications: 5+ years in fullstack development with strong skills in React/TypeScript and backend languages.
The predicted salary is between 60000 - 80000 £ per year.
We are looking for a Senior Fullstack Software Engineer to join our Signals Team, contributing to the development of secure, scalable applications that support digital identity and authentication services. You will work across the stack—from intuitive frontend interfaces to robust backend systems—collaborating with engineers, product managers, and designers to deliver impactful solutions. This role is ideal for engineers who take ownership of complex features end-to-end, influence technical direction, and help raise the engineering bar across the team.
The Signals team builds and maintains critical identity verification capabilities that enable secure onboarding and regulatory compliance worldwide, including:
- eKYC database integrations
- eID and digital identity integrations
These systems power trusted identity flows across multiple geographies and regulatory environments.
Key Responsibilities:
- Lead the design, build, and evolution of fullstack applications using React (TypeScript), Kotlin, Python, and Ruby
- Architect and develop scalable APIs and microservices deployed on AWS, Azure, or GCP
- Drive architectural discussions and contribute to long-term technical strategy
- Improve system reliability, scalability, observability, and performance
- Partner with product and UX teams to deliver high-quality, user-centric experiences
- Champion secure coding practices and contribute to identity and cryptographic systems
Key Projects You’ll Support:
- 5+ years of professional experience in fullstack or software engineering
- Strong proficiency in React/TypeScript and at least one backend language (Python, Kotlin, or Ruby)
- Proven experience designing and building distributed systems and scalable architectures
- Experience building and operating APIs and microservices in cloud environments (AWS, Azure, GCP)
- Strong understanding of system design, performance, and reliability trade-offs
- Deep knowledge of software security principles and privacy-by-design approaches
- Experience working in agile environments with CI/CD practices
- Experience with frameworks such as Spring Boot or Ruby on Rails
- Experience building secure SDKs or working on developer platforms
Senior Software Engineer (C# / JavaScript) in London employer: Entrust
Join a forward-thinking company in London that prioritises innovation and collaboration, offering a hybrid work model that promotes work-life balance. As a Senior Software Engineer, you'll be part of a dynamic Signals Team dedicated to developing secure and scalable applications, with ample opportunities for professional growth and the chance to influence technical direction. Enjoy a supportive work culture that values ownership, creativity, and continuous learning, making it an excellent place for engineers looking to make a meaningful impact.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer (C# / JavaScript) in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage with online communities. You never know who might have the inside scoop on job openings or can refer you directly.
✨Tip Number 2
Show off your skills! Create a portfolio showcasing your projects, especially those involving React, TypeScript, or any backend languages you've worked with. This gives potential employers a taste of what you can do beyond your CV.
✨Tip Number 3
Prepare for technical interviews by brushing up on system design and coding challenges. Practice common algorithms and data structures, and be ready to discuss your past projects in detail—especially how you tackled complex features.
✨Tip Number 4
Apply through our website! We love seeing candidates who are genuinely interested in joining us at StudySmarter. Tailor your application to highlight your experience with secure coding practices and scalable architectures—it'll make you stand out!
We think you need these skills to ace Senior Software Engineer (C# / JavaScript) in London
Some tips for your application 🫡
Tailor Your CV:Make sure your CV reflects the skills and experiences that match the Senior Fullstack Software Engineer role. Highlight your proficiency in React, TypeScript, and any backend languages you've worked with, as well as your experience with cloud environments.
Craft a Compelling Cover Letter:Use your cover letter to tell us why you're passionate about this role and how your background aligns with our mission at StudySmarter. Share specific examples of projects where you’ve taken ownership and driven technical direction.
Showcase Your Projects:If you have a portfolio or GitHub repository, include it! We love seeing real-world applications of your skills. Highlight any fullstack applications you've built, especially those involving secure coding practices or identity verification.
Apply Through Our Website:We encourage you to apply directly through our website for the best chance of getting noticed. It’s the easiest way for us to keep track of your application and ensure it reaches the right people!
How to prepare for a job interview at Entrust
✨Know Your Tech Stack
Make sure you’re well-versed in the technologies mentioned in the job description, especially React, TypeScript, and any backend languages like Python or Kotlin. Brush up on your knowledge of APIs and microservices, as you'll likely be asked to discuss how you've implemented these in past projects.
✨Showcase Your Problem-Solving Skills
Prepare to discuss specific challenges you've faced in previous roles and how you overcame them. Use the STAR method (Situation, Task, Action, Result) to structure your answers, focusing on your contributions to complex features and how you influenced technical direction.
✨Understand the Company’s Mission
Research StudySmarter and its Signals Team to understand their focus on digital identity and authentication services. Be ready to discuss how your experience aligns with their goals and how you can contribute to building secure and scalable applications.
✨Ask Insightful Questions
Prepare thoughtful questions that show your interest in the role and the team. Inquire about their current projects, the tech stack they use, or how they approach system reliability and performance. This not only demonstrates your enthusiasm but also helps you gauge if the company is the right fit for you.
