Jobs Fullstack

Job Description

• 5+ years of experience in developing full-stack applications.
• Experience with React frameworks such as Redux and React Router.
• Experience with Java, Spring Boot, and RESTful API development.
• Experience with cloud services and containerization using Azure and Docker.
• Familiarity with integrating Payment Gateways and CRM systems.
• Understanding of SQL and and NoSQL databases.
• Knowledge of implementing Single Sign-On (SSO) using OKTA or similar authentication providers.
• Good Understanding of SDLC process, version control, code review, continuous integration and automated deployment tools.
• Experience working on large-scale, production-grade projects.
• Knowledge of CI/CD methodology.
• Strong communication and collaboration skills
• Problem-solving skills with the ability to tackle challenges proactively and efficiently.
• B.Sc in Computer Science is an advantage.
• Advanced level of English

Job Responsibilities

• You will be part of a team responsible for integrating payment gateways and Customer Relationship Management (CRM) system.
• Collaborate with team members to design, develop, and deploy dynamic and responsive fullstack applications using React and Java.
• Participate in the integration of payment gateways and CRM systems, ensuring seamless operation and data flow.
• Contribute to the development of scalable and secure software systems, utilizing both SQL and NoSQL databases.
• Assist in the deployment of applications on cloud services, such as Azure Kubernetes Service (AKS), and manage containerized applications using Docker.
• Implement testing strategies including unit, integration, and automation tests to ensure the delivery of high-quality code.
• Work with product management and UX/UI teams to deliver user-centric designs and features.
• Maintain comprehensive technical documentation, including code structure, API documentation, and user guides.
• Communicate effectively with cross-functional teams and stakeholders.
• Stay updated on new technologies and methodologies to ensure continuous improvement of the development process

Department/Project Description

Our client is a performance rights organization in the United States. It collects blanket license fees from businesses that use music, entitling those businesses to play or sync any songs from the client's repertoire of over 22.4 million musical works. On a regular basis, the client distributes the money to songwriters, composers, and music publishers as royalties to those members whose works have been performed.

We’re building Project Apollo, a multiplatform Al-powered document system serving hundreds of thousands of users every month: We need a Engineer who ships end-to-end: someone who thinks like a product owner, codes like a craftsperson, and reaches for Al-native tooling by default.

What You Will Do

• Build and maintain the core Apollo multiplatform document system. You’ll own features end-to-end, from idea to production, React frontends, Node.js/Express backends, and PostgreSQL, Databricks integration & data layers.
• Ship to learn. Proactively instrument features, measure impact, seek user feedback, and iterate or kill based on what you discover. You treat metrics as a compass, not a report caro
• Design and orchestrate agentic Al workflows using modern frameworks (LangGraph, Claude Agent SDK, MCP protocols) and integrate LLMs into product features via prompt chains, tool calling, and function
• Collaborate with engineers, designers, and leadership to shape the product roadmap. You’ll have a real voice in what gets built and why.
• Build, maintain, and extend automation pipelines and connect them with Al agents, extermal APis, webhooks, and cloud services on GCR
• Contribute to database schema design (PostgreSQL, BigQuery), build and maintain RESTful APls, and help manage our cloud infrastructure on Google Cloud Platform.

What You Will Bring

• Python fluency, you can quickly build and utilise a wide range of libraries when the task calls for it.
• 2-5 years of full-stack experience in a high-output team. You know how to balance speed with quality and when to choose one over the other.
• Deep Python, TypeScript & React proficiency on the frontend (Hooks, Context API, Vite, Shadcn Ul) and backend (Node.js, Express, REST APls, PostgreSQL).
• You have taste. You can distinguish between good and bad UX, and you can share examples to demonstrate it.
• You’re Al-native. You reach for agents by default, understand MCP and agentic orchestration patterns, and have built guardrails to trust them more and more. Python proficiency for rapid prototyping is a must.
• You’re self-driven and business-aware. You care about solving real problems and moving the needle on metrics, not just shipping features. Give you context, and you’ll find the leverage.

Bonus Points

• Previous hands-on experience with LLMs in production, prompt tuning, RAG pipelines, vector databases (Pinecone, Weaviate), or agentic frameworks (Lang Graph, CrewAl).
• Familiarity with LLM observability tools (Langfuse, LangSmith) and cloud platforms (GCP).
• A genuine passion for Al and a habit of staying on the frontier: new models, protocols (MCP, A2A), and developer tooling.

Why You’ll Love Working With Us

• High-impact role in a small, agile team building a greenfield product with real scale potential.
• Modern, carefully selected tech stack with Al at the core, not bolted on.
• Startup energy backed by the resources and stability of a large, successful company.
• A collaborative culture that values open communication, ownership, and a shared passion for building exceptional products.

About Us
UITOP, a design & development team. We develop intuitive, scalable UI/UX for fast-growing B2B SaaS platforms across industries like logistics, finance, construction, and more.

Job Summary

We’re looking for a Junior/Strong Junior Full Stack Developer to join our team and grow with us. This role gives you real project experience, direct communication with clients, and support from an experienced mentor to grow your skills.

Requirements

• 1-2 years of commercial experience. 
• Strong knowledge of React and TypeScript. 
• Experience with state management (Redux / Context API / Zustand) and reusable component architecture. 
• Basic experience with Next.js, React Native, Gatsby, Remix. 
• Use AI tools (AI agents, Claude Code, Cursor, Codex or similar) in daily workflow. 
• Practical experience with Tailwind CSS or similar responsive design systems. 
• Hands-on experience with Node.js / NestJS and REST API. 
• Understanding of client-server architecture, authentication (JWT, OAuth), and relational databases (PostgreSQL, Prisma/Drizzle)
• Familiarity with testing frameworks (Jest, React Testing Library) and deployment environments (Vercel, Docker, Render, etc.)
• Upper-Intermediate English (B2). 

Key Responsibilities

• Build and maintain both front-end and back-end code for various projects.
• Collaborate with cross-functional teams, talk directly with clients. 
• Integrate third-party services and external APIs.
• Design and implement RESTful APIs.
• Ensure code quality through testing and version control using Git/GitFlow.
• Test your code thoroughly to ensure it works as expected. 
• Take tasks from start to deployment, seeing them through end-to-end. 

Bonus

• Familiarity with CI/CD workflows and deployment practices. 

Benefits

• Regular performance and salary reviews. 
• Working with complex large-scale SaaS projects, from 6 months.
• 18 working days of vacation and 10 sick days.
• Compensation 50% for professional development cources. 
• Constant feedback, working with a mentor, support and assistance from other experienced employees.
• Free Internal English classes.
• Company equipment. We’ll provide a laptop after 6 months of work. 
• Financial compensation of coworking 100% (during blackouts).
• Flexible work schedule, remote.

We are looking for a seasoned Full-Stack Engineer with a product mindset!

Ukraine and Abroad (except Poland) | Full-Time | Remote

About the role

Our team is growing, and we are looking for a talented software engineer. You will work in small teams on various products. The Software Engineer plays a key role in the decision-making process about technologies and our core product as we bring new and innovative products to the market. You will use the latest technologies and frameworks, Node.js and Postgres on the server-side and React on the client-side.

What you’ll do

• Design of the overall architecture of the web application
• Lead the Front-end & BE effort to implement cool new features, services, and APIs
• Write reusable code and libraries
• Optimize the application for maximum speed and scalability
• Solve bugs (no one can hide from it)
• Cover functionality with tests and monitoring
• Work closely with managers, engineers
• Contribute in all phases of the development lifecycle to build first in class FE & BE solutions
• Bring fresh ideas to the team and suggest new technologies

Who you are

• 5+ years of experience as a full-stack engineer
• Strong proficiency with NodeJS, JavaScript, TypeScript
• Experience with React or similar frontend frameworks
• Experience with NestJS
• Experience with FE & BE performance optimizations
• Experience with Jest Testing Framework
• Experience with Postgres
• Passionate about technology enjoys solving complex problems and learning new technologies
• Communication (are you sharing your thought process and asking questions where appropriate?)
• Teamwork (are you a team player putting the mission before self-interest?)
• Beauty and simplicity (of your code)
• Upper-intermediate or higher English level

Nice to have

• GraphQL
• Cloud experience (AWS)
• Manage infrastructure as code (Terraform, HashiCorp)

About us

Redocly specializes in API solutions, focusing on API design, documentation, and governance. They provide tools and services that help organizations create, manage, and optimize their APIs efficiently.

The mission is to accelerate API ubiquity. The primary way we do that is to improve our developer experiences. We’re a team of about 60 people focused on making the best products we can for our customers. We have a strong product-market fit. The products you work on are used by millions of people. We use Shape Up methodology.

Headquarter – Austin, Texas, US. We also have an office in Lviv.

https://redocly.com/ 

Redocly is trusted by leading tech, fintech, telecom, and enterprise teams to power API documentation and developer portals. Redocly’s clients range from startups to Fortune 500 enterprises.

Working with Redocly

• Tech stack: JS, TS, Node.js, Nest.js, React.js,Vitest, Postgres, AWS, Terraform
• Team: 5 people (middle-seniors)
• Team’s location: Ukraine&Europe
• There are functional, product, and platform teams and each has its own ownership, and line structure, and teams themselves decide when to have weekly meetings. 
• There are cycles of 8 weeks and teams can be mixed.
• Engineers are involved in all parts every two months to work on different things.

Perks

• Full remote
• Cooperation on a B2B basis / Gig-contract
• Contract with the US based company (no VAT)
• After a year of working with the company, you can buy a certain number of company’s shares
• Around 30 days of vacation (unlimited,  but let’s keep it reasonable 😁)
• 10 working days of sick leave per year
• Public holidays according to Ukrainian/EU law
• No trackers and screen recorders
• Working hours – European timezone. Working day – 8 hours. Mostly they start working from 10-11 am
• Equipment provided – MacBooks (M1 - M4)
• Performance reviews

Hiring stages

1. Prescreening (30 min)
2. HR Call (45-60 min)
3. Technical Interview (up to 30 min)
4. Trial Day (paid) - Offer Call

Interested? Let’s connect and discuss the details!

Our Client is your go-to iGaming service provider. They’re here to empower iGaming operators, allowing them to thrive in such a volatile industry. Their years of expertise, cutting-edge technology, and passion for delivering extraordinary player experiences make them the right choice for any company looking to elevate their success. They offer a range of iGaming offerings such as; Gaming Services, Casino Marketing, Sportsbook Marketing and Operations, Creative, Data and B.I, Operations (CS, RPF, KYC), VIP Management, Acquisition, Social Media, Content, Product, Legal and Compliance.

The Role:

We’re looking for a Full Stack Development Team Lead to join our B2B online casino team. This role is hands-on and varied. You’ll be responsible for the frontend and middleware layers across a group of client brands in a specific region, while also leading a team of developers’ day to day.

The focus is simple: build solid, performant features and keep both the team and our customers moving forward.

You’ll spend your time:

• Leading and supporting a team of developers, helping them grow and stay aligned.
• Making technical decisions around our React/Next.js frontend and middleware layer.
• Keeping code quality high without slowing down delivery.
• Working closely with product and other teams to ship features end-to-end.
• Stepping in when things get stuck — technically or otherwise.

We’re building a cross-functional team, so people here don’t work in silos. You’ll be expected to move across layers when needed and take ownership of features from start to finish. To do well in this role, you need to be comfortable balancing hands-on work with leadership. Strong technical judgment matters, but so does the ability to keep a team focused, unblock them quickly, and make steady progress in a fast-paced environment. Overall, this role is about building things properly, leading people well, and delivering consistently.

Key Responsibilities:

• Build, release, and maintain online casino brands using our white-label platform.
• Maintain and improve existing frontend templates for the region, and create new ones when needed.
• Support and extend our Directus CMS, ensuring stability and smooth content operations.
• Contribute to and maintain scalable backend services that support high-traffic Environments.
• Take ownership of features end-to-end — from initial concept through to production.
• Lead a distributed, asynchronous team of developers, keeping work moving without heavy coordination overhead.
• Ensure solid test coverage and reliability across all delivered work.

Requirements:

• Strong experience with JavaScript / TypeScript in backend development.
• Strong experience with Next.js, Tailwind and Typescript for frontend development.
• Minimum 5 years experience with full stack development.
• Minimum 2 years experience in a leadership position.
• Good communication skills and a strong sense of leadership and ownership.
• Strong experience with SQL. Experience with Node, Typescript, GraphQL and Vue are considered an asset.
• Nice to have: Experience with online casino development, Redis, Bun Runtime & Rabbit MQ.
   

What we offer:

• Attractive remuneration package.
• Health insurance cover from the first day of work.
• Wellness benefit (after probation).
• Optician/Spectacle and Blue Lens Benefit (after probation).
• Breakfast/lunch all week.
• Monthly snacks allowance.
• Training support.
• Modern office facilities.
• Dog-friendly workplace.
• Exciting Company Events.
• Monthly Beer Fridays.
• Eur1,000 Refer a friend bonus..
• Relocation package (if required).
• One day birthday holiday

Fullstack Developer (Backend-focused) — Java / AWS / React

We are looking for an experienced Senior Fullstack Developer (Backend-focused) to join a long-term project in partnership with a global consulting company.
 

You will work on digital products for a Belgium-based telecommunications company, supporting major media and entertainment platforms across Belgium and the Netherlands.
 

💻 What you’ll do

• Develop and maintain backend APIs
• Support and improve existing backend and frontend applications
• Fix bugs and ensure system stability
• Identify opportunities for product and technical improvements
• Collaborate with stakeholders, developers, and product teams
   

🧠 About the role

You will be part of a cross-functional team working on cloud-based applications used across the organization.

This role is ideal for someone who:

• enjoys building scalable backend systems
• can balance speed and technical quality
• is comfortable working in a collaborative environment
• cares about clean architecture and long-term product health
   

✅ Requirements

Backend & Architecture

• 3+ years with microservices architecture
• Strong experience with Java 21+
• Solid knowledge of Spring Boot / Spring Framework

Cloud & Infrastructure

• 5+ years with AWS (ECS, SQS, SNS, API Gateway, CloudWatch, etc.)

Databases

• MongoDB (CRUD, 3+ years)
• SQL (PostgreSQL or SQL Server)

Frontend

• 1+ year with React / JavaScript

General

• REST APIs, HTTP, JSON
• Agile (Scrum / Kanban)

• English — Upper-Intermediate+

   

⭐ Nice to have

• Advanced Spring (AOP, OpenFeign)
• AWS Lambda, DynamoDB
• Data tools (Snowflake, DBT, Airflow)
• Quarkus, Thymeleaf
• Experience with GDPR or marketing platforms

🤝 What matters for us

• Strong communication skills
• Ability to work in a team
• Focus on quality over quantity
• Proactive mindset and ownership

⚠️ Application Policy
Please note that we expect candidates to complete all stages of the hiring process independently, without the use of AI assistance.
Our goal is to fairly assess your personal skills and experience.
 

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

Meet the YozmaTech

YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster.
We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact.
Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is looking for a Senior Full Stack Engineer with strong expertise across both frontend and backend, a passion for building scalable, high-quality products, and proven ability to handle end-to-end feature development.

In this role, you’ll play a key part in advancing our web architecture, improving system performance, and enhancing the overall development standards of our platform. You’ll work on complex real-time products, helping shape fast, reliable, and user-friendly experiences.

If you enjoy solving technical challenges, working with modern technologies, and creating clean, efficient solutions — we’d love to connect.

This role offers the opportunity to make a direct impact on product quality, technical decisions, and overall platform growth within a fast-moving and collaborative environment.

Key Requirements:
🔹 5+ years of software engineering experience, with strong frontend expertise in modern JavaScript frameworks (React, Angular, Vue), TypeScript, and modern build tools (Vite, Next.js, SWC);
🔹 Proven experience improving frontend architecture and scaling web applications;
🔹 Strong understanding of TypeScript, build tools (Webpack, Vite), and browser APIs;
🔹 Solid backend fundamentals 5+ years — API design, data flow management, and building scalable systems with Python as a must-have and Node.js considered a strong plus.
🔹 Hands-on experience with AI tools such as Cursor, Claude, and ChatGPT
🔹 Product-oriented mindset with strong attention to UX, quality, and maintainability;
🔹 Strong communication skills and the ability to work effectively in cross-functional teams;
🔹 English – Upper-Intermediate or higher.

What you will do:
🔹 Drive frontend improvements by introducing better development practices, tools, and modern technologies;
🔹 Design and develop scalable, high-performance web applications using React and modern frontend frameworks;
🔹 Take ownership of features from planning to production, including technical design, implementation, and optimization;
🔹 Work closely with Product, Design, and engineering teams to deliver smooth and intuitive user experiences;
🔹 Support backend development in Python to ensure strong integration across the full product stack;
🔹 Improve development processes, code quality, testing, and overall engineering efficiency;
🔹 Focus on performance, reliability, and maintainability across the platform;

Interview stages:
🔹 HR Interview
🔹 Intro Call
🔹 Technical Interview
🔹 Final Interview
🔹 Reference Check
🔹 Offer

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.