Jobs Fullstack

Middle Full Stack Engineer

We’re building the Production ready system from the PoC and looking for a Middle Full Stack Engineer who enjoys creating scalable products and taking ownership of real technical decisions. You’ll work closely with product and design teams, shape parts of the architecture, and help turn ideas into a production-ready platform.

Requirements:

• 3+ years of software development experience with JavaScript, TypeScript, and modern ES6+
• Good experience with React and Next.js
• Good experience with backend development using Node.js / NestJS
• Hands-on experience with MongoDB and PostgreSQL
• Experience building scalable applications and contributing to system architecture
• Comfortable working in fast-paced, product-driven environments
• Good communication skills and ability to collaborate with both technical and non-technical stakeholders
• Upper-Intermediate English (B2+)

Nice to Have:

• Experience with MQTT
• Experience with React Native or WebSockets
• Experience working in startup or early-stage environments
• Experience building applications that can be deployed on both OnPrem and Cloud platforms
• Experience with Azure, IoT Hub, Microsoft Entra ID

Responsibilities:

• Develop and deliver key features of a new product from concept to launch
• Contribute to the design and implementation of scalable frontend and backend architecture
• Collaborate closely with product, design, and engineering teams
• Continuously improve performance, reliability, and scalability of the platform.

We are building a modern SaaS platform for legal firms focused on task management, matter management, billing, time tracking, and office/team-based permissions.

We are looking for a strong Full-stack TypeScript Developer (Middle+ / Senior) who can move quickly while maintaining clean architecture, type safety, auditability, and multi-tenant boundaries.

Technology Stack

• Bun runtime / package manager / workspace tooling
• TypeScript monorepo architecture
• Backend: Hono, Kysely, PostgreSQL, Supabase Auth
• Frontend: React 19, Vite, SWR, wouter, Tailwind v4
• UI architecture based on Base UI + shadcn-style primitives
• Database tooling: Postgres migrations, Kanel, kanel-kysely

• Validation: Zod with generated DB types

   

Responsibilities

• Develop backend APIs using Hono and shared service architecture
• Write secure and type-safe Kysely queries with office/team/self permission scopes
• Maintain multi-tenant architecture and access control boundaries
• Extend PostgreSQL schema, migrations, triggers, RLS policies, and audit logs
• Generate and maintain database types after schema updates
• Build frontend functionality for tasks, matters, billing, and leads
• Integrate Supabase Auth for authentication flows
• Follow existing audit trail architecture using runAsUser/runAsEmployee/runAsSystem

• Write clean, maintainable, and type-safe code without unnecessary abstractions

   

Requirements

• Strong TypeScript experience
• Solid PostgreSQL knowledge beyond CRUD:
  • constraints
  • triggers
  • transactions
  • views
  • RLS
  • JSONB
• Experience with Kysely or other typed SQL query builders
• Understanding of multi-tenant SaaS architecture
• Strong React experience with hooks, forms, component composition, and data fetching
• Experience working in monorepos
• Understanding of authorization, auditability, and data ownership

• Comfortable working with CLI tools and local development environments

   

Nice to Have

• Experience with Hono
• Experience with Bun
• Experience with Supabase Auth/JWKS
• Experience building B2B SaaS products
• Experience with legal tech, billing, or task management systems
• Experience with Tailwind v4 and Base UI

• Experience with database code generation

   

Important Engineering Principles

• No npm/pnpm usage — Bun only
• Business logic must stay outside route handlers
• Audit fields and timestamps must not be written manually
• Supabase JS is used only for authentication
• Keep solutions simple and maintainable

• Respect tenant isolation and permission boundaries at all times

   

What We Offer

• Competitive salary
• Flexible work schedule
• Professional development opportunities
• Access to paid learning platforms

• Opportunity to work on a modern TypeScript-first SaaS platform

   

If you are passionate about building scalable and type-safe applications with modern TypeScript technologies, we would love to hear from you.

About the Role

The company is seeking a Senior Frontend Engineer with strong React experience to join their team. This role involves developing and maintaining high-quality web applications, collaborating with cross-functional teams, and contributing to the overall architecture and design of frontend systems. The ideal candidate will have a passion for building user-friendly interfaces and a deep understanding of modern frontend technologies.

Responsibilities

• Develop and maintain high-quality web applications using React and TypeScript.
• Collaborate with product managers, designers, and backend engineers to define and implement new features.
• Contribute to the architecture and design of scalable and maintainable frontend systems.
• Write clean, efficient, and well-documented code.
• Participate in code reviews and provide constructive feedback to peers.
• Optimize application performance and ensure a smooth user experience.
• Troubleshoot and debug issues across the frontend stack.
• Stay up-to-date with the latest frontend technologies and best practices.

Requirements

• 5+ years of experience in frontend development or fullstack.
• Strong proficiency in React Native, React, TypeScript, JavaScript, HTML, and CSS.
• Experience with state management libraries (e.g., Redux, RxJS).
• Familiarity with build tools (e.g., Webpack, Babel).
• Experience with testing frameworks (e.g., Jest, Cypress).
• Understanding of GraphQL and RESTful APIs.
• Experience with Node.js is a plus.
• Familiarity with cloud platforms (e.g., AWS) and containerization technologies (e.g., Docker, Kubernetes) is a plus.
• Experience with CI/CD pipelines.
• Strong problem-solving skills and attention to detail.
• Excellent communication and teamwork skills.
• Ability to work independently and take ownership of projects.
• Fluency in English.

About the Company

The company is a dynamic and innovative tech company that values collaboration, continuous learning, and delivering exceptional products. They offer a remote-first work environment with a strong focus on work-life balance and professional growth.

Maincast is looking for an experienced Full-stack to strengthen our development team and help us build reliable products for sports and esports platforms. You will work in a fast-paced environment where quality, responsibility, and technical ownership matter.

Required:

• Proficiency in Node.js and React
• Strong TypeScript skills
• State management: Zustand or Redux
• Backend: Nest.js, Express.js, or Fastify
• PostgreSQL or other relational DBMS
• ORM: Prisma, TypeORM, or Drizzle
• REST API design and authentication patterns (JWT,
• OAuth)
• WebSocket
• Software architecture principles (SOLID, design
• patterns)
• Git, GitHub, peer-review workflow

Nice-to-Have:

• Next.js
• Vue.js / Nuxt
• React Query / TanStack Query
• React UI libraries (Mantine, Chakra UI, MUI)
• Headless CMS (Directus, Strapi, Sanity)
• Docker, CI/CD (GitHub Actions)
• Testing (Jest, Vitest, Playwright)
• Cloud basics (AWS/GCP)

We offer:

— 22 working days of vacation
— 20 sick leave days
— Flexible work schedule
— Mental health care
— Support and development of volunteer culture

Responsibilities

• Design and develop full-stack web applications
• Build and maintain backend services using Java & Spring (Boot, MVC)
• Architect and optimize database solutions (PostgreSQL)
• Work with JPA / Hibernate for efficient data handling
• Implement secure authentication and authorization (Spring Security)
• Develop and maintain frontend using HTML / CSS / JavaScript / jQuery / Bootstrap
• Design and integrate REST APIs
• Improve system performance, scalability, and reliability
• Participate in architectural decisions and code reviews
• Mentor junior developers

Requirements

• 4+ years of experience in Java development
• Strong experience with Spring ecosystem
• Deep understanding of application architecture and design patterns
• Experience optimizing database performance
• Strong knowledge of security best practices
• Ability to design scalable and maintainable systems
• Experience leading features or small teams
• Strong code review and mentoring skills

Nice to Have

• Experience with Docker and containerized environments
• Familiarity with message brokers (e.g., RabbitMQ)
• Experience with microservices architecture
• CI/CD experience
• Experience working on high-load systems

NeduAI is a Finnish GovTech startup at the intersection of education and public sector service delivery. We're building SmartProfile — a "neural hub" connecting skills, jobs, and education — replacing static resumes and outdated job boards with a data-driven, human-centered career ecosystem.

We partner with Finnish municipalities (Vantaa, Kotka), Unemployment Funds (A-kassa), Trade Unions, and educational institutions (XAMK, Laurea). You're joining at a critical scaling phase as we expand from Finland to a broader Nordic presence.

What you'll own:

• Lead the engineering team, set best practices, and own the technical roadmap
• Drive migration from AWS/Azure to EU-based sovereign infrastructure
• Manage PostgreSQL + Vector store architecture powering ML features and RAG capabilities
• Ensure GDPR & AI Act compliance, OAuth/MFA, data encryption
• Architect and scale RESTful APIs integrating SmartProfile with client systems
• Lead development of Assistant PRO — an AI agent for public sector administrators

What we're looking for:

• Proven experience leading technical teams
• Expert backend development (Python, Node.js, or Go) + distributed systems
• Kubernetes, containerization, production workloads (99.5%+ SLA)
• AI integrations, Vector Databases + PostgreSQL
• LLM fine-tuning, monitoring, and agentic workflow experience
• OAuth 2.0, encryption protocols, data privacy regulations
• Automated testing and monitoring/DevOps practices

We are building a fully automated self-service registration system for MongoDB databases, implemented entirely in n8n. The system allows internal users to request new MongoDB databases or access to existing ones, handles an owner-based approval flow, and manages secure one-time password delivery — all without manual admin intervention.

The project is well-specified: a detailed technical concept and a phased workplan are ready. Your job is to implement it.

What You Will Build

The system consists of 7 n8n workflows:

- WF-01 – Registration form with routing logic

- WF-02a – Reusable sub-workflow: user creation via MongoDB Ops Manager API

- WF-02b – Database initialization (3 collections + vector search index)

- WF-03 – Access request flow for existing databases

- WF-04 – Owner approval form (approve / reject with permission levels)

- WF-05 – One-time password reveal form (secure, token-based)

- WF-06 – Scheduled cleanup (expired tokens, user deletion, notifications)

Supporting infrastructure: 3 n8n Data Tables, Microsoft Outlook integration, and MongoDB Ops Manager REST API integration.

The project is structured in 4 phases, each ending with a testable milestone. Phase 0 consists of PoCs to validate all external connections before any workflow is built.

## Your Responsibilities

- Implement all workflows according to the provided concept and workplan

- Conduct PoCs for MongoDB Ops Manager API, MongoDB direct connection (admin credential, dynamic database naming), vector search index creation, and Outlook integration

- Build and test token-based forms (password reveal, approval)

- Set up n8n Data Tables and credential management

- Perform end-to-end tests for both registration scenarios (new DB and access request)

- Handover with documentation of any deviations from the concept

Required Skills

- n8n – solid hands-on experience building multi-step workflows, including Webhook Triggers, Form Triggers, Execute Workflow, Code Nodes, and HTTP Request Nodes

- REST API integration – comfortable reading API docs and translating them into HTTP Request Nodes

- MongoDB – understanding of databases, collections, users, and roles; experience with the MongoDB driver or direct connections

- JavaScript – for Code Nodes (password generation, token logic, dynamic expressions)

- Microsoft Graph API / Outlook – experience sending emails from n8n or similar tools via OAuth2

Nice to Have

- Experience with MongoDB Ops Manager or MongoDB Atlas Admin API

- Familiarity with MongoDB Vector Search and index configuration

- Experience with n8n Data Tables and n8n's self-hosted setup

- Experience building secure, token-based one-time-use forms in n8n

Project Details

 Phases 0–4 as defined in the workplan 

 All 7 workflows implemented and tested in n8n, handover documentation |

Collaboration Close coordination with the project lead during PoC phase; largely autonomous implementation afterwards |

Environment n8n instance provided; MongoDB Ops Manager and Outlook credentials will be made available

How to Apply

Please send a short introduction and relevant project references, include examples of n8n workflows you have built, particularly any involving REST API integrations, dynamic data handling, or form-based user flows.

We’re looking for a Senior Full Stack Engineer to join a Web3 project.

The project is based on ZK-proof technology (zero-knowledge proofs), enabling decentralized verification of user attributes without directly exposing personal data.

Responsibilities:

• Design, develop, and implement blockchain solutions using Node.js, JavaScript, and TypeScript, following clean code principles
• Collaborate with the team to define project requirements and architecture for blockchain-based applications
• Integrate blockchain functionality into new and existing systems and applications
• Perform code reviews and ensure the quality and security of the developed software
• Develop and maintain tests for components
• Collaborate with other developers and stakeholders to identify and implement improvements.

Professional requirements:

• Strong knowledge of JavaScript/Typescript, with a focus on writing clean, maintainable code
• 3+ years of commercial experience as a full-stack engineer with NodeJS (NestJS)
• Strong understanding of the event loop in Node.js and its implications on application performance and scalability
• 2+ years of commercial experience with ReactJS/Next.js
• Familiarity with asynchronous programming concepts, including Promises and async/await
• Experience with optimizing code performance and addressing blocking and concurrency issues in event-driven systems
• Solid understanding of blockchain technology, cryptographic principles, and decentralized systems
• Experience with viem, ethers.js or similar libraries for interacting with blockchain networks
• Strong problem-solving skills and the ability to troubleshoot complex issues;
• Proficiency in writing unit tests, integration tests, and end-to-end tests for Node.js and blockchain components
• Experience with PostgreSQL databases and query languages (e.g. SQL)
• Familiarity with database design and optimization principles

Will be a plus:

• Experience in designing and maintaining SDKs and public-facing components
• Understanding of, or hands-on experience with, decentralized or multi-party protocols
• Solid understanding of zero-knowledge proofs (ZKPs) and their applications

We offer:

• Competitive compensation
• Social package (24 working days of annual leave, 5 paid sick days)
• Flexible working hours
• Challenging projects in diverse business domains and a variety of tech stacks
• Personal development and professional growth opportunities
• Work with talented, ambitious and family-feel teams
• Educational possibilities: corporate courses, knowledge hubs, and in-house English classes
• Compensation for your professional certification & support for your learning activities
• Opportunity to choose IT equipment you like
• Corporate social responsibility