Full Stack Development Engineer

Lektor Aero Oy; Helsinki; Hybrid; EUR 65,000 - 90,000; Full time

Job summary

Lektor Aero Oy in Helsinki is seeking a Full Stack Developer to design, develop, and maintain both front-end and back-end components of web- and game-based applications, contributing to robust software solutions.

You will collaborate with cross-functional teams to deliver seamless user experiences, optimize performance, and participate in code reviews, testing, and monitoring using Jest, Playwright, and Sentry.

Qualifications

• Experience in Front-End Development with HTML, CSS, and responsive design
• Back-End development experience with server-side languages and frameworks
• Full-Stack capability across front-end and back-end
• Strong software development principles
• Problem-solving and teamwork
• Bachelor's degree in CS or related field
• Experience in aviation or educational technology is a plus

Responsibilities

• Build React UI flows and reusable components on Vite + Tailwind
• Design and implement NestJS APIs
• Improve reliability with tests (Jest/Playwright) and monitoring (Sentry)

Skills

TypeScript

React

Node.js

NestJS

Frontend development

Backend development

SQL/Prisma

Docker

Kubernetes

Education

Bachelor's degree in Computer Science

Tools

Docker

Kubernetes

Prisma

Jest

Playwright

Sentry

Job description

Lektor Aero is a high-learning-tech company dedicated to providing cutting edge training solutions for Air Traffic Control. With a focus on innovation, we leverage latest educational technology to deliver state-of-the-art training experiences. Our mission is to enhance the skills and expertise of aviation professionals globally, ensuring safer and more efficient air traffic operations. Lektor Aero is committed to pushing the boundaries of learning technology to support the future of the aviation industry.

Role Description

This is a full-time, onsite/hybrid role for a Full Stack Developer located in Helsinki. The Full Stack Developer will be responsible for designing, developing, and maintaining both front-end and back-end components of web- and game-based applications. The role includes collaboration with cross-functional teams to deliver seamless user experiences and robust software solutions. Additional tasks include ensuring application performance, troubleshooting, and participating in code reviews to maintain quality standards.

Qualifications

• Experience in Front-End Development including proficiency in HTML, CSS, and responsive design
• Proficiency in Back-End Web Development, with familiarity in server-side languages and frameworks
• Expertise in Full-Stack Development, with the ability to work seamlessly across both front-end and back-end systems
• Strong foundation in Software Development principles and practices
• Problem-solving skills and ability to work collaboratively in a team environment
• Bachelor's degree in Computer Science, Software Engineering, or a related field
• Experience in aviation or educational technology is a plus

What you’ll do

• Build React UI flows and reusable components on Vite + Tailwind
• Design and implement NestJS APIs
• Improve reliability with tests (Jest/Playwright) and monitoring (Sentry)

What we’re looking for

• Strong TypeScript across frontend and backend
• Experience with React, Node.js/NestJS, and SQL/Prisma
• Comfort with Docker and Kubernetes
• Product mindset and collaborative delivery
• Ability to work in a global team

Location

Company is based in Helsinki. Remote work is possible, but regular presence in Helsinki / Southern Finland will be required.

Term

Permanent, with probation period.

Applications are open until March 13th 2026. Shortlisted candidates will be interviewed during March and April.

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