06/10/2026 updated
100 % available
Full Stack Software Engineer | Go, Node.js, React, Flutter, Rust
Kuopio, Finland
Only remote
Bachelor of Science in Computer Science (in progress), University of Eastern FinlandFlutterNode.jsSQL DatabasesRust (Programming Language)React.jsBackendFull Stack DevelopmentFront End Software Development
Full-Stack Web & Mobile Development
Extensive experience building production-ready full-stack web and mobile applications using React, Next.js, Node.js, Flutter, and Go, supporting 10k+ potential monthly active users with 99.9% uptime.
Backend Engineering & API Optimization
Strong background in engineering high-performance backend infrastructures, including database indexing and API optimization, achieving up to 50% reduction in API latency for production systems.
Cloud Infrastructure & DevOps
Proficiency in Linux, Docker, Nix, CI/CD pipelines, Git, Supabase, and MongoDB, enabling scalable and reliable deployment of full-stack applications in production environments.
Programming Languages
Broad knowledge of multiple programming languages including Java, Python, Go, Dart, JavaScript, TypeScript, C#, Rust, SQL, and NoSQL.
Frontend Frameworks & UI
Hands-on experience with React, Next.js, SolidJS, Svelte, Tailwind CSS, and Flutter for building responsive and high-quality user interfaces.
AI Integration & Data Pipelines
Experience architecting backend logic to process 60k+ recordings for custom AI model training sets and integrating OpenAI APIs for real-time, context-aware features.
Internationalization (i18n)
Architected a robust i18n framework enabling seamless multi-language support and facilitating market expansion across the Canadian market.
Game Development
Knowledge of Godot (GDScript) and MonoGame for 2D game development, including custom modular systems managing 300+ concurrent game objects and physics optimization.
3D Graphics & Three.js
Built a high-performance 3D editor using Three.js with GLTF instancing to maintain stable 60 FPS during mesh editing and sub-1-second loading times for large-scale 3D miniatures.
Agile & Project Management
Familiarity with Agile methodologies including Scrum and Jira for structured software development and team collaboration.
Extensive experience building production-ready full-stack web and mobile applications using React, Next.js, Node.js, Flutter, and Go, supporting 10k+ potential monthly active users with 99.9% uptime.
Backend Engineering & API Optimization
Strong background in engineering high-performance backend infrastructures, including database indexing and API optimization, achieving up to 50% reduction in API latency for production systems.
Cloud Infrastructure & DevOps
Proficiency in Linux, Docker, Nix, CI/CD pipelines, Git, Supabase, and MongoDB, enabling scalable and reliable deployment of full-stack applications in production environments.
Programming Languages
Broad knowledge of multiple programming languages including Java, Python, Go, Dart, JavaScript, TypeScript, C#, Rust, SQL, and NoSQL.
Frontend Frameworks & UI
Hands-on experience with React, Next.js, SolidJS, Svelte, Tailwind CSS, and Flutter for building responsive and high-quality user interfaces.
AI Integration & Data Pipelines
Experience architecting backend logic to process 60k+ recordings for custom AI model training sets and integrating OpenAI APIs for real-time, context-aware features.
Internationalization (i18n)
Architected a robust i18n framework enabling seamless multi-language support and facilitating market expansion across the Canadian market.
Game Development
Knowledge of Godot (GDScript) and MonoGame for 2D game development, including custom modular systems managing 300+ concurrent game objects and physics optimization.
3D Graphics & Three.js
Built a high-performance 3D editor using Three.js with GLTF instancing to maintain stable 60 FPS during mesh editing and sub-1-second loading times for large-scale 3D miniatures.
Agile & Project Management
Familiarity with Agile methodologies including Scrum and Jira for structured software development and team collaboration.
Experience
Professional experience0 - 5 years
Freelancer since2026
Languages
EnglishFluentFrenchNative speakerRomanianNative speakerRussianNative speaker
Project history
Engineered full-stack applications for international clients using Go and Node.js backends with 100% on-time milestone completion. Optimized backend infrastructures and database indexing, achieving a 50% reduction in API latency and 99.9% uptime. Developed and deployed production-ready full-stack web and mobile applications supporting 10k+ potential monthly active users.
Promoted from Intern after 3 months. Engineered an audio conversion module with under 200ms latency, improving data integrity and speed by 30% for a custom AI model. Architected backend logic to process 60k+ recordings for scalable AI model training data pipelines. Delivered feature work that secured 2 public innovation grants and 4 industry awards. Architected a robust i18n framework enabling multi-language support for the Canadian market.