Junior Full Stack Developer

Junior Full Stack Developer

Position Summary As a Junior Level fullstack developer at CST Training, you will design, build and maintain web applications across the entire stack. Joining a small but talented development team and reporting directly to the Lead Developer, you will ship features end\-to\-end – from database schema design through to building full applications including APIs, backend services and polished, responsive user interfaces. This is a hands\-on role where your work will have a direct, visible impact on our learners and operations.

Essential Duties \& Responsibilities

• Build and maintain fullstack web applications using React (TSX/JSX) on the frontend.


• Develop APIs and backend services using Node.js to support frontend functionality.


• Design, implement, and optimise MySQL databases, including schema design, queries, and performance tuning.


• Write clean, maintainable, well\-tested code that scales.


• Collaborate with stakeholders to translate business requirements into technical solutions.


• Troubleshoot, debug, and resolve issues across the stack.


• Participate in planning, estimation, and architectural discussions.

• 3\+ years of professional experience as a fullstack developer.


• Strong proficiency in React with TypeScript (TSX) and/or JSX.


• Solid experience with Node.js and a backend framework such as Express (or NestJS, Fastify) for building APIs and services.


• Hands\-on experience with Next.js or similar modern React frameworks.


• Solid experience designing and working with MySQL databases (schema design, joins, indexing, query optimisation).


• Experience building and consuming RESTful APIs.


• Familiarity with state management (Redux, Zustand, React Query, or similar).


• Experience with automated testing (Jest, Vitest, Playwright, or Cypress).


• Familiarity with version control (Git) and collaborative development workflows.


• Strong problem\-solving skills and the ability to work independently.


• Excellent written and verbal communication.

• Experience with cloud platforms (AWS, Azure, GCP, or Hetzner).


• Exposure to CI/CD pipelines and DevOps practices.


• Background in the EdTech or training sector.


• Experience in Linux environments


• Familiarity with Docker or other containerisation tools.


• Experience with authentication/authorisation systems (OAuth, JWT, SSO).

• Stay up to date with the latest developments in the React, Node.js, and wider web ecosystem.


• Receive mentorship and code review from the Lead Developer.


• Participate in relevant training and certification programs.


• Contribute to the improvement of internal engineering practices and tooling.


• Opportunity to progress into senior development roles or specialise in areas such as backend architecture, DevOps, or technical leadership.

• Advance to a Senior Fullstack Developer position.


• Specialise in key areas such as backend systems, frontend architecture, or DevOps.


• Take ownership of larger projects and contribute to technical direction.


• Gain recognition as a technical expert within CST Training and beyond.

• Problem Solving – Takes a proactive approach to resolving technical challenges across the stack.


• Teamwork – Works collaboratively within a small development team.


• Communication – Clearly articulates technical decisions and progress to both technical and non\-technical stakeholders.


• Time Management – Manages workload effectively to deliver features on schedule.


• Attention to Detail – Ensures code quality, accuracy, and consistency.


• Accountability – Takes ownership of assigned features and sees them through to delivery.


• Adaptability – Adjusts to changing requirements and evolving technologies.


• Confidentiality – Maintains discretion when handling sensitive data and systems.


• Proactiveness – Seeks out opportunities to improve code, processes, and products.

• Primarily a remote\-based role with ability to commute to CST Training office (Bexley DA5 1JX) when required, requiring extended periods working on a computer.

• Inital screening with recruitment


• Technical interview with the lead developer

Benefits:

• Free parking


• Work from home

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