Senior Software Engineer

Jobtailor

Helsinki

On-site

EUR 90,000 - 130,000

Full time

11 days ago

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Job summary

Jobtailor is seeking a Senior Software Engineer to build scalable learning platform features, from concept to completion. You will own end-to-end projects, mentor peers, and drive architectural decisions to enhance reliability and performance.

The role emphasizes leadership in cross-functional teams, delivering user-centered products and personalized learning experiences within an AI-enabled stack. Helsinki-based or relocation-friendly.

Qualifications

At least a decade of experience in software engineering.
Deep expertise in full-stack development using Node.js, React, and TypeScript.
Strong product mindset and focus on creating high-quality products.
Proven experience leading end-to-end projects and breaking down execution plans.
Proven experience mentoring other developers.
Ability to manage broad accountability, switch contexts, and solve complex scalability challenges.
Professional or hobby experience using AI tools; AI-native mindset is a critical requirement.
Experience with GraphQL and NoSQL databases such as MongoDB is a bonus.
Based in the Helsinki capital region or willing to relocate.

Responsibilities

Build and deliver scalable, highly reliable front-end and back-end features for the learning platform.
Develop quizzes, mini-games, interactive layouts, and custom themes.
Own courses, user learning paths, and agentic workflows from concept to completion.
Drive performance improvements and make architectural decisions for system reliability.
Provide technical leadership and mentorship.
Develop team practices and help upskill peers.
Ship new features and contribute to planning and execution of the product roadmap.
Lead significant end-to-end technical projects.
Collaborate with the gamified learning product team to create user-centered products and personalized learning experiences.

Skills

Full-Stack Development

Node.js

React

TypeScript

Technical Leadership

Mentorship

Product Mindset

Context Switching

AI Tools

Tools

GraphQL

NoSQL Databases

MongoDB

Performance Improvement

Architectural Decision Making

Project Management

Job description

Build and deliver scalable, highly reliable front-end and back-end features for the learning platform
Develop quizzes, mini-games, interactive layouts, and custom themes
Own courses, user learning paths, and agentic workflows from concept to completion
Drive performance improvements and make architectural decisions for system reliability
Provide technical leadership and mentorship
Develop team practices and help upskill peers
Ship new features and contribute to planning and execution of the product roadmap
Lead significant end-to-end technical projects
Collaborate with the gamified learning product team to create user-centered products and personalized learning experiences

Requirements

At least a decade of experience in software engineering
Deep expertise in full-stack development using Node.js, React, and TypeScript
Strong product mindset and focus on creating high-quality products
Proven experience leading end-to-end projects and breaking down execution plans
Proven experience mentoring other developers
Ability to manage broad accountability, switch contexts, and solve complex scalability challenges
Professional or hobby experience using AI tools; AI-native mindset is a critical requirement
Experience with GraphQL and NoSQL databases such as MongoDB is a bonus
Based in the Helsinki capital region or willing to relocate

Core Competencies

Demonstrates deep expertise in Full-Stack Development with Node.js, React, and TypeScript, while leading end-to-end technical projects and mentoring peers. Focuses on creating high-quality, user-centered products and driving performance improvements in scalable systems.

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