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Full Stack Developer (Principal Engineer)

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Onsite

Full Stack Developer (Principal Engineer)

ClearRoute

Full Stack Developer (Principal Engineer)

Skills

Google Cloud PlatformMongoDBDockerReactNodeTypescriptExpressPostgreSQLMySQLGitGraphQLGitLabJenkinsAWSKubernetesJavascriptAzure

7 days ago

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Important information


Contract type:

Permanent

Location:

Sofia, Bulgaria

Work mode:

Onsite

Published on:

13 October 2026

What they need


About Us:

ClearRoute is a global platform engineering consultancy that helps enterprises reliably bring high-impact digital products to market faster, cheaper, and safer.

We proactively look for ways to make things better, to join the dots, to give back, to share, to learn. With curiosity and creativity, we see opportunities to make a difference for ourselves, our team and our clients every day.

Role:

We are looking for an experienced Full Stack Developer to join our team as a contractor. The ideal candidate will have a strong background in software development with proven back and front-end experience. As a Full Stack Engineer, you will be responsible for designing, developing, and maintaining our web applications and APIs. You will work closely with cross-functional teams to deliver high-quality, scalable, and performant software solutions. You will be working closely with our UK based team so strong English language skills are essential.

Responsibilities:

  • Design, develop, and maintain web applications and RESTful APIs using TypeScript, GraphQL, React, and Node.js.
  • Collaborate with product owners, UX/UI designers, and other stakeholders to gather requirements and translate them into technical specifications.
  • Build intuitive user interfaces using modern web technologies, with a focus on usability and responsiveness.
  • Implement server-side logic and business rules using Node.js and Express framework.
  • Develop and integrate with external APIs and third-party services to enable data exchange and system integrations.
  • Design and optimise databases, ensuring efficient data storage, retrieval, and query performance.Implement and maintain unit tests and end-to-end tests using frameworks like Jest or Mocha, practicing Test-Driven Development (TDD) principles.
  • Ensure code quality and adherence to best practices through code reviews, refactoring, and continuous improvement.
  • Collaborate with DevOps engineers to implement and improve CI/CD pipelines for seamless deployment and release management.
  • Troubleshoot and debug issues reported by users or identified through testing, providing timely resolutions.
  • Contribute to the documentation of software design, architecture, and development processes.

Requirements:

  • Bachelor's degree in Computer Science, Engineering, or a related field (or equivalent practical experience).
  • Strong proficiency in TypeScript and JavaScript.
  • Experience with React and state management libraries like Redux or MobX.
  • Solid understanding and hands-on experience with GraphQL.
  • Proficiency in backend development using Node.js and Express framework.Strong knowledge of building RESTful APIs, including authentication, authorisation, and data validation.
  • Familiarity with database systems such as PostgreSQL, MySQL, or MongoDB.
  • Experience with Test-Driven Development (TDD) and writing unit tests using frameworks like Jest or Mocha.Experience with version control systems like Git and agile development methodologies.
  • Strong problem-solving skills and ability to work independently as well as in a collaborative team environment.
  • Excellent communication and interpersonal skills to effectively interact with team members and stakeholders.

Preferred Qualifications:

  • Familiarity with containerization technologies like Docker and container orchestration with Kubernetes.
  • Knowledge of cloud platforms such as AWS, Azure, or Google Cloud Platform (GCP).
  • Understanding of continuous integration and deployment tools like Jenkins, GitLab CI/CD, or AWS CodePipeline.
  • Familiarity with UI design principles and experience collaborating with UX/UI designers.
  • Experience with Agile/Scrum methodologies and working in an Agile team environment.

What Next?

ClearRoute is committed to creating an inclusive working environment where people can be themselves at work. We celebrate individuality and our differences. We understand that some differences may mean that you require changes made to the interview process. We are happy to cater to your needs to make the interview accessible, please let us know by emailing us.

If you see yourself taking on this exciting new opportunity, just click the ‘Apply Now’ button and submit your CV.

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