Junior Full Stack Developer

About the Role

Vapaus builds and operates a cloud-based bike leasing and sustainable mobility platform serving employers and employees in multiple markets.
We are looking for a Junior Full Stack Developer to join our product development team. In this role, you will contribute to the development and maintenance of a production-grade web platform that supports leasing contracts, financial flows, payroll-related processes, and employer benefit programs across different regulatory environments.
You will work collaboratively with engineers, designers, and product stakeholders to deliver reliable, scalable features in a modern cloud-native environment.

Key Responsibilities

• Develop and maintain backend services and APIs using Python and FastAPI
• Work with PostgreSQL using ORM tools (SQLModel, SQLAlchemy) in production environments
• Build and maintain frontend applications using React
• Contribute to complex business logic related to contracts and financial processes
• Participate in automated testing (unit, integration, and end-to-end testing)
• Support containerised deployments and CI/CD processes
• Contribute to infrastructure and cloud-based deployments (GCP, Terraform)
• Contribute to localisation and multi-market feature support
• Maintain system reliability, maintainability, and code quality in a shared codebase serving multiple countries

Requirements

• Relevant higher education degree (e.g., Computer Science, Software Engineering) or equivalent practical experience
• Experience building APIs (REST-based) and working with relational databases such as PostgreSQL
• Experience with modern frontend development using React
• Experience working with version control (Git) in a collaborative environment
• Experience participating in code reviews and structured development workflows
• Understanding of software development best practices (testing, CI/CD, documentation)
• Ability to work in a cross-functional team environment
• Fluent English (written and spoken)

Considered an Advantage

• Experience with FastAPI, SQLAlchemy, or similar typed backend frameworks
• Experience deploying services to Google Cloud Platform (e.g., Cloud Run, Cloud SQL)
• Experience with infrastructure-as-code tools (e.g., Terraform)
• Experience implementing business logic in financial, leasing, employee benefit, or B2B2C systems
• Experience working on products serving multiple countries with market-specific configuration logic
• Experience with automated testing tools (e.g., Vitest, Playwright, or similar)
• Experience contributing to structured design systems or admin interfaces

What We Offer

• Opportunity to work on a scalable international platform operating in multiple regulatory environments
• Collaborative and supportive engineering team
• Modern cloud-based technology environment
• Competitive salary and growth opportunities