Full Stack Developer

Salary Competitive

Role Overview

As a Full Stack Developer at ONEiO Cloud Oy, you will be part of a highly skilled and collaborative engineering team responsible for developing and operating ONEiO’s leading edge, AI-driven Integration Automation Platform. You will build new product features across both backend and frontend layers, helping global customers configure, manage, and monitor integrations with ease. This role is essential in scaling our product capabilities and delivering a high-quality user experience within a resilient SaaS platform.

Key Responsibilities

Development & Technical Excellence

Design, implement, and maintain product features across backend and frontend technologies
Collaborate with engineers, product management, and UX to deliver seamless end-to-end solutions
Write clean, testable, and maintainable code with attention to quality and reliability
Take part in technical design and architectural decisions
Embrace a DevOps mindset by contributing to deployment, monitoring, and operational improvements
Improve engineering practices through automation, documentation, and continuous feedback

What We're Looking For

3–5 years of experience in full stack development, platform engineering, or SaaS product development
Proven track record building scalable web applications with strong backend and frontend capabilities
Deep expertise in Java/Spring Boot and TypeScript/Angular with understanding of modern development practices
Experience with microservices, REST APIs, and CI/CD in cloud-native environments
A collaborative engineer who can inspire technical excellence and drive results across diverse teams
Strong problem-solving skills and ability to balance technical depth with customer impact
Embodies ONEiO's iONEER mindset — takes ownership, learns continuously, puts team first, and delivers results

Technology Stack & Requirements

Required:

Strong experience with Java and Spring Boot
Experience with modern frontend development using TypeScript and Angular
Good understanding of REST APIs and microservice architectures
Familiarity with CI/CD pipelines, Git, and testing frameworks
Fluency in English (spoken and written)

Nice to have:

Experience with Kafka or other event-driven systems
Experience in Kotlin
Experience with MongoDB or other NoSQL/document databases
AWS and Kubernetes familiarity
Observability tooling (e.g., New Relic, PagerDuty)
Familiarity with Docker and scripting (e.g., JavaScript or Python)
DevOps or Site Reliability Engineering exposure

Why ONEiO

Build the future of integrations: Create the platform that redefines how enterprises connect and automate their critical business processes
Drive technical innovation: Shape both product direction and engineering culture in a fast-growing platform company
Work with integration pioneers: Join a team combining cutting-edge automation, platform thinking, and customer obsession to scale impact
Grow with impact: Contribute to ONEiO's global expansion while building engineering capabilities that matter to thousands of users worldwide

Perks and benefits

This job comes with several perks and benefits

Free coffee / tea

Flexible working hours

Social gatherings

Near public transit

Free friday beers

Skill development

See all 18 benefits

Working at
ONEiO

See company profile

At ONEiO, we help companies that deliver and manage IT and technology services by transforming how they integrate tools, processes, and ecosystems. Our customers—Managed Service Providers (MSPs), IT service companies, and technology providers—rely on us to automate and simplify their most complex integrations. ‍ We are pioneering IntegrationOps, a fully managed, automated approach to integration that removes manual work, eliminates maintenance overhead, and allows businesses to consume integrations as a service—instead of managing them as never-ending projects. What makes ONEiO different is not just our technology—but our deep domain expertise in IT services. We understand the unique challenges that service providers face when integrating multiple vendors, subcontractors, and enterprise IT environments. By combining our industry knowledge with powerful automation, we enable our customers to scale faster, improve efficiency, and focus on delivering great services. ‍ Traditional integration methods are slow, expensive, and require constant maintenance. With IntegrationOps, we enable businesses to integrate faster, reduce operational bottlenecks, and let IT professionals focus on meaningful, high-value work.