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- Tasks: Lead the development of a complex user-facing dashboard using Next.js and React.
- Company: Join a cutting-edge tech company focused on innovative solutions.
- Benefits: Enjoy competitive pay, health perks, remote work options, and growth opportunities.
- Why this job: Make a real impact by creating elegant UI for complex workflows and data.
- Qualifications: 4+ years in React, Next.js, and strong component architecture skills required.
- Other info: Dynamic team environment with exciting projects in machine learning and data.
The predicted salary is between 36000 - 60000 £ per year.
We are seeking a Senior Web Developer with deep expertise in Next.js + React to lead the architecture and development of our user-facing dashboard. This isn’t just another CRUD app — the dashboard orchestrates long-running workflows, displays high-volume biological and model data, and interacts with systems like Airflow, MLflow, and Jupyter. The complexity is real — and elegant frontend design is what makes it usable.
If you are exceptional at Next.js and React, understand how to structure component architectures that scale, and enjoy creating durable, well-designed UI systems, this is the role.
Responsibilities- Own and evolve the React + Next.js application architecture
- Create robust UI patterns for complex workflows, logs, job status, and model results
- Design state management strategies using tools like React Query / TanStack Query
- Build clean and understandable abstractions around remote services (Airflow, MLflow, Jupyter)
- Define, implement, and maintain RBAC policies aligned with product requirements and security best practices
- Write testable UI code and use mocking effectively in unit and integration tests
- Collaborate closely with product, backend, and ML engineers to shape user workflows
- 4+ years of experience building production React applications
- React — component architecture, hooks, memoization, rendering patterns, suspense
- Next.js — routing, data loading strategies, server vs client rendering decisions
- TypeScript — types that clarify code, not complicate it
- State management at scale — e.g., React Query, Recoil, Zustand, MobX, etc
- Authentication, authorization, and RBAC — implementing secure auth flows, role-based access control, and permission models using AWS Amplify Gen 2 and Cognito
- API design — crafting clear, consistent interfaces and integrating complex backend data structures (type safety with tRPC and zod)
- Experience with modern TypeScript ORM frameworks such as Prisma or Drizzle ORM
- Deploying frontend services using Docker on AWS
- Experience implementing web security best practices, including input validation, CSP headers, and safe API interaction
- Unit, integration, and end-to-end testing (Jest, React Testing Library, MSW, Cypress, Selenium, or Playwright)
- Experience working with component systems such as shadcn/ui, with attention to consistency, accessibility, and maintainable design patterns
- Strong UI/UX sensibility for scientific tools and data-rich interfaces, including experience collaborating in Figma and applying layout and usability principles
- Experience deploying and managing applications on AWS using Infrastructure as Code (e.g., Terraform) and containerized workflows (Docker, Docker Compose)
- Familiarity with Kubernetes-based deployments, including Helm charts and GitOps-style workflows
- Experience with machine learning, computational biology workflows, or data-intensive dashboards
- Familiarity with platforms and APIs such as Airflow, MLflow, or Jupyter Server
Senior Software Developer in London employer: Helical
Contact Detail:
Helical Recruiting Team
StudySmarter Expert Advice 🤫
We think this is how you could land Senior Software Developer in London
✨Tip Number 1
Network like a pro! Reach out to your connections in the industry, attend meetups, and engage in 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 best projects, especially those using Next.js and React. This is your chance to demonstrate your expertise and make a lasting impression on potential employers.
✨Tip Number 3
Prepare for interviews by practising common technical questions and coding challenges. Use platforms like LeetCode or HackerRank to sharpen your skills. Remember, confidence is key, so be ready to discuss your past experiences and how they relate to the role.
✨Tip Number 4
Apply through our website! We love seeing applications come directly from passionate candidates. Tailor your application to highlight your experience with complex workflows and UI design, and let us know why you're excited about this role.
We think you need these skills to ace Senior Software Developer in London
Some tips for your application 🫡
Show Off Your Skills: Make sure to highlight your expertise in Next.js and React right from the start. We want to see how you've tackled complex projects before, so share specific examples that showcase your skills in building robust UI systems.
Tailor Your Application: Don’t just send a generic application! Take the time to tailor your CV and cover letter to reflect the requirements in the job description. We love seeing candidates who understand our needs and can demonstrate how they fit into our team.
Be Clear and Concise: When writing your application, clarity is key. Use straightforward language and avoid jargon unless it’s relevant. We appreciate well-structured applications that are easy to read and get straight to the point.
Apply Through Our Website: We encourage you to apply through our website for the best chance of getting noticed. It helps us keep track of applications and ensures you’re considered for the role. Plus, it’s super easy to do!
How to prepare for a job interview at Helical
✨Know Your Tech Stack Inside Out
Make sure you’re well-versed in Next.js, React, and TypeScript. Brush up on component architecture, state management strategies, and how to handle complex workflows. Be ready to discuss your past projects and how you tackled challenges using these technologies.
✨Showcase Your Problem-Solving Skills
Prepare to talk about specific problems you've solved in previous roles, especially those involving high-volume data or intricate UI designs. Use examples that highlight your ability to create durable, well-designed systems and how you approached architectural decisions.
✨Demonstrate Collaboration Experience
Since this role involves working closely with product, backend, and ML engineers, be ready to share experiences where you collaborated effectively. Discuss how you’ve contributed to shaping user workflows and how you communicate technical concepts to non-technical team members.
✨Prepare for Technical Questions and Tests
Expect to face technical questions or coding tests during the interview. Practice writing clean, testable code and be familiar with testing frameworks like Jest or React Testing Library. This will show that you can not only build but also maintain high-quality applications.
