Location: Remote
Contract Type: B2B
English Level: C1+
Experience: 7+ years
Compensation: Gross, negotiable
Public Holidays: 10 public holidays per year (vacation & sick leave unpaid)

About the Role

We are looking for a Senior Full Stack Engineer (Backend-focused) to design and build secure, scalable services for a new access control and authentication layer.

The role is primarily focused on backend architecture and API development, while also contributing to the React-based frontend when needed.

You will be responsible for building core backend services such as the Okta Wrapper/Gateway, credential bridging logic, and the Global Registry of Trials service, ensuring high standards of security, performance, and reliability.

Tech Stack

• Frontend: React

• Backend: Node.js (Express) or FastAPI (TBD)

• Databases: SQL / NoSQL

• Authentication: Okta

• Architecture: API-driven services

Key Responsibilities

• Design and implement the core backend logic for the Okta Wrapper/Gateway, including authentication and policy enforcement.

• Build a secure credential bridging service responsible for controlled login and session orchestration into InForm on behalf of users.

• Develop the Global Registry of Trials service and APIs.

• Ensure security, scalability, and performance of backend systems.

• Build and maintain high-performance REST APIs.

• Contribute to React-based frontend components when required.

• Integrate backend services with external systems and enterprise platforms.

• Write technical design documentation for new features and services.

• Ensure code quality, testing, and production readiness of services.

Requirements

• 7+ years of experience in software engineering with strong focus on backend development.

• Strong experience with Node.js (Express) or Python (FastAPI).

• Experience building scalable backend services and APIs.

• Experience with React for frontend development.

• Solid knowledge of SQL and/or NoSQL databases.

• Experience integrating authentication systems (Okta or similar).

• Strong understanding of security, access control, and system integration.

• Experience designing high-availability and scalable systems.

• Strong English communication skills (C1+).

Deliverables / Outputs

• Production-ready backend services (Wrapper/Gateway and Registry).

• Secure credential bridging and session orchestration logic.

• Scalable and performant APIs.

• Technical design documentation for new features.

• Maintainable, well-tested code ready for production.