At a Glance
- Tasks: Develop secure, scalable applications and collaborate on impactful projects across the stack.
- Company: Join a leading tech firm focused on digital identity and authentication services.
- Benefits: Enjoy flexible working, competitive salary, and strong career growth opportunities.
- Other info: Dynamic hybrid work model to support your work-life balance.
- Why this job: Make a real impact in secure onboarding and regulatory compliance 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
Flexible working (hybrid/remote) to support work-life balance. Strong investment in career growth, leadership, and learning.
London office: If you're based in our London, UK office, you'll follow a hybrid work model, which requires being in the office three days per week.
Senior Software Engineer (Frontend, JavaScript) in London employer: Entrust
Join a forward-thinking company that prioritises innovation and employee development, offering a hybrid work model in the vibrant city of London. With a strong focus on career growth and leadership opportunities, you'll collaborate with talented professionals to create impactful solutions in digital identity and authentication services. Enjoy a supportive work culture that champions work-life balance and encourages continuous learning, making it an excellent place for passionate engineers to thrive.
StudySmarter Expert Advice🤫
We think this is how you could land Senior Software Engineer (Frontend, 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 using React, TypeScript, or any backend languages you've mastered. 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
Don’t forget to apply through our website! It’s the best way to ensure your application gets seen by the right people. Plus, we love seeing candidates who are genuinely interested in joining our team!
We think you need these skills to ace Senior Software Engineer (Frontend, 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 building secure, scalable applications. Share specific examples of projects where you took ownership and drove technical direction, showing us how you can contribute to our Signals Team.
Showcase Your Problem-Solving Skills:In your application, include instances where you've tackled complex challenges in software engineering. We love engineers who can think critically and come up with innovative solutions, so don't hold back on sharing your successes!
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 in our team.
How to prepare for a job interview at Entrust
✨Know Your Tech Stack
Make sure you’re well-versed in React, TypeScript, and at least one backend language like Python, Kotlin, or Ruby. Brush up on your knowledge of distributed systems and scalable architectures, as these will likely come up during technical discussions.
✨Showcase Your Problem-Solving Skills
Be prepared to discuss past projects where you’ve tackled complex features end-to-end. Highlight how you influenced technical direction and improved system reliability or performance. Real-world examples will make your experience stand out.
✨Understand the Company’s Mission
Familiarise yourself with the company’s focus on digital identity and authentication services. Be ready to discuss how your skills can contribute to their goals, especially in building secure and scalable applications.
✨Ask Insightful Questions
Prepare thoughtful questions about the Signals Team's current projects, architectural decisions, and how they approach secure coding practices. This shows your genuine interest in the role and helps you assess if it’s the right fit for you.
