Jobs

FullStack Engineer – Job Requirements

We are seeking a talented Full Stack Engineer. The ideal candidate is a creative problem-solver with a strong eye for design and experience building modern web applications. You will work across both front-end and back-end stacks to develop, visualize, and deliver user-centric applications.

Minimum Qualifications:

• 3+ years of professional experience in full-stack development
• Strong proficiency in React.js, including state management (e.g., Redux, Context API), component-based architecture, and hooks
• Experience with data visualization libraries such as D3.js, Chart.js, Recharts, or Plotly
• Solid understanding of UI/UX principles and experience designing intuitive and responsive user interfaces
• Proficiency in Python for backend development
• Familiarity with NiceGUI or similar Python-based GUI frameworks
• Knowledge of RESTful APIs and asynchronous programming
• Experience working with version control systems like Git

Preferred Qualifications:

• Experience designing dashboards or analytical tools with heavy visual and interactive components
• Familiarity with backend frameworks like FastAPI or Flask
• Basic understanding of deployment and DevOps practices (e.g., Docker, CI/CD, cloud hosting)
• Experience with databases (SQL or NoSQL)
• Interest or experience in machine learning, cybersecurity, or threat intelligence applications

We're looking for a Senior RoR engineer to join the growing team of our client from Estonia who operates in the iGaming domain (online casino and sportsbook platform).

Requirements:

• 6+ years of experience building and supporting large-scale software systems.

• Expertise in Ruby, JavaScript, and AWS.

• Experience with infrastructure and platform engineering is a plus.

• Passion for building great products and eagerness to learn new technologies.

• Excellent communication skills and the ability to work effectively in a remote environment.

Responsibilities:

• Design, build, and maintain robust, scalable software systems that handle high loads.

• Work closely with our client's team to develop new features, solve complex problems, and enhance the platform.

• Take ownership of your work, managing it end-to-end — from idea to production support.

• Collaborate on platform infrastructure and engineering challenges using AWS.

• Contribute to a fast-moving, highly driven team where your work will make a significant impact.

We are looking for a skilled fullstack developer experienced in Ruby on Rails and modern frontend frameworks (React / Vue / Hotwire).

Requirements:

— 3+ years of experience with Ruby on Rails

— Experience with modern JS frameworks (React / Vue / Stimulus / Hotwire)

— Solid knowledge of PostgreSQL, Redis

— Experience with testing tools (RSpec / Minitest)

— Understanding of REST, MVC, CI/CD practices

— Strong communication and self-management skills

Nice to have:

— Experience with Docker / AWS / Sidekiq or other background job systems

— Intermediate+ English

We offer:

— Fully remote work

— Flexible schedule

— Transparent development process and a strong team

— Competitive compensation

Send your CV or message me directly.

We are looking for a skilled fullstack developer experienced in Ruby on Rails and modern frontend frameworks (React / Vue / Hotwire).

Requirements:

— 3+ years of experience with Ruby on Rails

— Experience with modern JS frameworks (React / Vue / Stimulus / Hotwire)

— Solid knowledge of PostgreSQL, Redis

— Experience with testing tools (RSpec / Minitest)

— Understanding of REST, MVC, CI/CD practices

— Strong communication and self-management skills

Nice to have:

— Experience with Docker / AWS / Sidekiq or other background job systems

— Intermediate+ English

We offer:

— Fully remote work

— Flexible schedule

— Transparent development process and a strong team

— Competitive compensation

Send your CV or message me directly.

We are looking for a Senior or Lead Fullstack Engineer with strong expertise in React Native and Python (FastAPI) to join our team. You’ll take ownership of both mobile frontend and backend development, helping us build scalable, high-performance solutions for a rapidly growing product.

🔧 What You’ll Do

• Frontend: Build and maintain mobile applications using React Native (iOS/Android).
• Backend: Develop APIs and backend logic using Python (FastAPI).
• Architecture: Design clean, scalable, and maintainable systems.
• Code Quality: Write clean, testable code and participate in code reviews.
• Optimization: Ensure performance across frontend and backend.
• Teamwork: Collaborate with product managers, designers, and engineers.
• Leadership (if Lead level): Provide technical direction and mentorship.

✅ What We’re Looking For

• 3+ years of experience with React Native (React experience is a plus).
• 2+ years of experience with Python (FastAPI preferred).
• Strong knowledge of JavaScript/TypeScript.
• Solid understanding of API architecture (REST, WebSockets).
• Experience with relational databases (PostgreSQL or similar).
• Comfortable taking ownership and working independently.

Nice to have: experience with Next.js, Docker, CI/CD, DevOps mindset.

💎 What We Offer

• Fully remote work with flexible hours.
• Work on a live, fast-growing product using modern technologies.
• No bureaucracy – fast decisions, real ownership, and visible impact.
• Support for professional development (courses, conferences, tools).

About ChordChord

ChordChord is the leading browser-based platform for chord progressions, song arrangement, and collaborative music creation. More than 100 000 musicians craft songs with us every month. Backed by Google for Startups and highlighted by top music-tech media, we’re proving that professional-grade songwriting tools can live entirely in the web browser.
 

🧑‍🍳 Role Overview

We’re looking for a product-minded Senior Full-Stack Engineer who loves crafting pixel-perfect, highly interactive UIs and can own features end-to-end across our React/Next.js + Node.js stack. You’ll architect intricate, responsive layouts, build bespoke design-system components, and see your work ship to a passionate global audience within days—not months. If turning ambitious mock-ups into beautifully polished experiences is your idea of fun—and you enjoy hopping between UI, backend, and cloud infra—this is your stage.
 

💪 What You’ll Do

• Build, and ship custom, responsive interfaces in React/Next.js + SASS (or CSS-in-JS)—animations, drag-and-drop, real-time state, and all the edge cases.
• Collaborate with design to translate Figma concepts into accessible, production-ready components.
• Extend backend APIs (Node.js, MongoDB) and automate scalable infrastructure on AWS / Google Cloud.
• Refactor and harden a large production codebase for maintainability, performance, and cross-browser consistency.
• Work shoulder-to-shoulder with the founder and a tight senior team to scope, release, and iterate on new music-creation features—fast.
   

😎 Why This Role Rocks

Growth path

We want to grow fast. Help us grow, and you'll be a part of the founding team.
 

Instant impact

Every commit reaches tens of thousands of musicians within hours.

UI craftsmanship

Tackle complex grids, layouts, timeline editors, and delightful micro-interactions.
 

Autonomy & ownership

Minimal process; you propose, build, release, and monitor your features.

🚨 Requirements

Must-haves

• 3 + years building production web apps with React and Next.js.
• Proven experience shipping complex, responsive layouts and rich interactive flows.
• Solid backend skills in Node.js & MongoDB.
• Track record of independently owning features from concept to prod support.

Nice-to-haves

• Deep SASS expertise and an eye for design-system detail.
• Experience with performance profiling and optimization of large React apps.
• Contributions to sizeable, established codebases.
• Side projects in music tech—or a genuine passion for music/creative tools.
• Familiarity with payment integrations (Stripe, Paddle)

• Practical knowledge of AWS and/or Google Cloud.

   

Core Competencies

• Architecture mindset – design component hierarchies and data flows for long-term scale.
• UI/UX excellence – deliver pixel-perfect, accessible, and animated experiences across breakpoints.
• Product focus – sweat the UX details and iterate based on real user feedback.
• Self-direction – set and hit high bars for quality, reliability, and deadlines.

Stack Snapshot

React • Next.js • Node.js • MongoDB • AWS • Google Cloud • SASS / CSS-in-JS • Stripe/Paddle

Logistics

• Location: Remote.
• Job Type: Full-time.
• Start: ASAP.
   

Junior Full-Stack Developer  — Bucharest

We are a young and ambitious team looking for Junior Full-Stack Developer to join us. If you want to grow with a real project, work with modern technologies, and gain hands-on production experience — this is your opportunity.

Requirements:

• React
  NestJS
  Firebase
  AWS (S3, DynamoDB)
  Docker
  MongoDB
• Nice to have:
  React Native
• English: upper-intermediate ( speak/read/write)

We offer:

• Salary of $600
• Full-time position
• Friendly work environment and continuous support

• Opportunity to work with modern technologies and real-world products

   

Want to kick off your career with real experience, not just pet projects?
Send your resume — let’s get in touch.

Description

We are seeking an experienced Full Stack Software Engineer with 5+ years. The ideal candidate will have a proven track record of building scalable, reliable, and efficient data infrastructure, with significant expertise in Go-based services and MongoDB database management.
If you’re a seasoned developer who can quickly adapt to existing architectures and contribute effectively to delivering high-quality, production-ready software, we want to hear from you. This is a hands-on development role where your ability to align with current technical direction and deliver immediate impact is key, rather than long-term design ownership or system re-architecture.

We’re a supportive, inclusive group that values collaboration and fosters a strong sense of belonging. Our team operates with transparency and alignment, guided by scaled agile practices that promote continuous improvement.

We’re driven by values that shape how we work together every day:
Teamwork, ownership, accountability, proactivity, transparency, empathy, inclusivity, and a commitment to continuous learning and growth.

Requirements

• 5+ years of professional experience as a Full Stack Software Engineer.
• Extensive professional experience with Go (Golang) is essential, including a deep understanding of concurrency, Goroutines, and channels.
• Significant hands-on experience with MongoDB, covering schema design, complex query optimization, replication, sharding, and robust backup/recovery strategies.
• Solid experience with TypeScript React
• Strong understanding of web fundamentals (HTML, CSS, JavaScript).
• Experience with version control systems (Git).
• Experience with containerization technologies (e.g., Docker) in a maintenance context.
• Excellent problem-solving skills and a pragmatic approach to development.
• Strong communication skills, particularly for technical documentation and collaboration within an existing team.
• A proven track record of delivering production-ready software in a timely manner.
• Fluent in English
   

Job responsibilities

• Develop and maintain both frontend and backend components of an existing system, ensuring high performance, scalability, and reliability.
• Implement new features and enhancements for the designated system using GO and MongoDB Atlas.
• Contribute to the frontend using a modern TypeScript React.
• Write clear, concise technical documentation to support ongoing maintenance and knowledge transfer.
• Actively participate in code reviews to maintain code quality and ensure adherence to established patterns.
• Quickly understand and navigate an existing codebase and system architecture, providing solutions aligned with current technical direction.
• Troubleshoot and resolve issues across the full stack of the assigned system.

The solution, developed by our client, an emerging and fast-expanding startup, is revolutionizing infrastructure monitoring using optical fibers. It is based on an award-winning, innovative approach that replaces conventional sensors in overseeing electrical grids and oil & gas pipelines spanning extensive distances. 

Their fiber-optic technology, enhanced with AI and machine learning, enables clients to meet their environmental and renewable energy targets, ensuring smooth utility operations on the path to net-zero emissions. They help avert environmental disasters, protect human lives, and maintain the seamless functioning of vital energy and transportation infrastructures.

Product distinctive fusion of AI and engineering proficiency tackles critical challenges currently confronting power operators, offering potential solutions to significant infrastructure issues.
 

About the Role: 

We are currently seeking a seasoned Senior Backend-oriented Full Stack Engineer (with React) to join our dynamic team. You’ll play a key role in the end-to-end delivery of a dynamic, AI-driven scaling product that integrates cutting-edge optical fiber sensing, advanced digital signal processing, and machine learning technologies. You will lead the design and implementation of innovative solutions, making critical project decisions that drive our success. You’ll collaborate closely with cross-functional teams, take full ownership of features from concept to deployment, and contribute to shaping the future of a platform that has real-world impact.

Key Responsibilities: 

• Software Design, development, testing, deployment, maintenance, and improvement
• Building intelligent systems that provide real-time visibility into complex infrastructure networks
• Developing responsive, real-time alert mechanisms to detect anomalies and trigger proactive actions
• Collaborating with colleagues and internal customers on technical challenges
• Troubleshoot system issues and provide quick and thorough solutions
• Maintain high standards of software quality by utilizing good practices and habits

Required Competence and Skills:
 

• 5+ years of experience with Node.js 
• Hands-on experience with Nest.js framework
• At least 2 years of experience working with React
• Solid understanding and practical experience with Kubernetes
• Proficient with SQL, PostgreSQL 
• Experience in designing and implementing RESTful API
• Experience with cloud environments (AWS/GCP/Azure)
• Experience with microservice architecture 
• Experience implementing real-time data communication features using WebSockets
• Proven experience in delivering large-scale, robust, available SaaS applications
• Expertise with development processes, including feature design, design reviews, code reviews, and automated testing
• Proven experience in end-to-end feature life cycle ownership from product requirements to architecture and design to development and testing
• Excellent English communication skills, both verbal and written
• Strong communication and collaboration skills
• Bachelor’s degree in Computer Science or a related field.

Nice to have skills:

• Experience with MongoDB

Why Us?

We utilize a remote working model, providing a powerful workstation and co-working space of your choice in case you need it.

We offer a highly competitive package.

We provide 20 days of vacation leave per calendar year (plus official national holidays of a country you are based in)

We prioritize the professional growth and well-being of our team members. Hence, we organize various social events throughout the year to foster connections and promote wellness.

📍 Location: Poland only
🕒 Work Schedule: Full-time, EU time zone
📅 Start Date: ASAP
📆 Duration: Long-term (1 year+)
🗣 English Level: Upper-Intermediate
💼 Seniority: Senior / Lead

🧠 Project Overview
We’re partnering with a top-tier global management consulting firm, supporting Fortune 500 companies with cutting-edge analytics solutions. The product is an AI/ML-powered platform designed to boost productivity and efficiency in industrial processing plants.

This production-ready, modular analytics system includes industry-specific templates and real-time AI advisory features to help control room operators fine-tune operations. The platform uses advanced algorithms for data engineering, prediction, and optimization.

👥 Team Composition

• Product Manager
• Tech Lead / Team Lead / PM
• Tech Lead Substitute
• Data Scientist
• Fullstack Developer
• DevOps Engineer
• Frontend & Fullstack Engineers

🧩 Responsibilities

• Build and improve robust software solutions as part of a dynamic development team
• Collaborate closely with the operations team to integrate modern tools and platforms

🛠 Tech Stack
Must Have:

• React
• TypeScript
• SCSS
• Playwright
• FastAPI
• PostgreSQL
• SQLAlchemy
• Docker
• Figma
• CI/CD tools (GitHub Actions, CircleCI, Travis CI)
• Cloud platforms (AWS preferred: Terraform, ECS)

Nice to Have:

• LangChain

💬 Interview Process

1. English check (15 min)
2. Internal technical interview (60–90 min)
3. Final client interview (60 min)

📍 Location: Poland | Full-time | Remote | EU Timezone

About the Role:
We’re seeking a skilled Senior Fullstack Engineer with expertise in React and Python/Node/Java to join an active project for one of the world’s top-tier management consulting firms. You’ll be part of a small, agile team focused on building high-impact solutions for Fortune 500 clients.

🎯 Key Details:

• Seniority Level: Senior
• Language Requirements: Upper-Intermediate English
• Start Date: ASAP
• Contract Duration: long-term
• Location: Poland (remote work within EU timezone)

🧑‍💼 About the Client:
Our client is a globally recognized management consulting leader, trusted by major international corporations. Their digital platform and services are used by a wide range of Fortune 500 companies across various industries.

🛠 Tech Stack:
React + Python / Node.js / Java

🔧 Your Responsibilities:

• Design and deliver both prototypes and scalable applications within weeks to a few months
• Work closely with cross-functional teams to create impactful web and mobile solutions
• Engage across the entire stack—from database to frontend to deployment
• Apply best practices, architectural patterns, and evaluate trade-offs in complex systems

✅ Must-Have Skills:

• 5+ years of experience with JavaScript/TypeScript, including React.js and Next.js
• Proven backend experience with Python, Node.js, or Java
• Familiarity with modern dev tools, workflows, and AI-powered coding assistants
• Understanding of server-side rendering and modern web development concepts
• Excellent communication and team collaboration skills
• Passion for technology, innovation, and continuous improvement
• Solid experience working with relational databases, preferably cloud-hosted

🧪 Interview Process:

1. English language check – 15 minutes
2. Technical interview (internal) – 1 to 1.5 hours
3. Client interview – 1 hour

We’re looking for a motivated Junior Full-Stack Developer with a strong technical foundation and a desire to grow in a fast-paced team.

Location: Warsaw (Hybrid — 50% remote, 50% in-office)
Note: This position is open to Ukrainian nationals currently based in Warsaw.

What we offer:

• Starting salary: $750/month
• Regular reviews: every 3 months (with growth opportunities)
• Work format: hybrid — partial remote, partial office
• Mentorship, support, and real production tasks

• A friendly, collaborative team environment

   

What we expect:

Strong knowledge of:

• Next.js
• Websockets
• PostgreSQL
• Redis
• Docker
• Server-Sent Events (SSE)

Nice to have:

• MongoDB
• CI/CD tools
• AWS
   

What you’ll do:

• Work on both frontend and backend tasks
• Collaborate with the team to design and implement features
• Help maintain and optimize infrastructure
• Communicate actively with team leads and report progress
• Learn, grow, and bring your energy into real projects

Ready to grow with us?
Apply now and become part of a team where your skills will grow fast — and your work will matter.

• Project Description:

  Our client is a Swiss leader in online trading, serving over 500,000 clients who can trade more than 3 million products through highly performant and secure platforms. In addition to various online trading products, including stocks, bonds, funds, derivative products, and cryptocurrencies, we also offer Forex, Robo-Advisory, and Mortgage solutions.
  
  Since 2012, we have partnered with the client to develop innovative and cutting-edge digital solutions that help customers achieve their investment goals. Our solutions are continuously evolving, transitioning into atomic microservices and self-contained systems.
  
  The team is a distributed cross-functional group working as a single unit across onshore and offshore locations. It owns the full delivery lifecycle: from feature design and implementation to support and maintenance. Work is split between developing new functionality and evolving existing systems, with rotation based on project priorities. Engineers participate in technical discussions, contribute to design decisions, and are expected to deliver maintainable code and thoughtfully designed solutions.

• Responsibilities:

  - Design and develop modern web applications and backend services.
  - Extend and refactor existing systems as part of ongoing product evolution.
  - Implement business features and actively contribute to architectural and design decisions.
  - Participate in estimations and drive technical improvements as part of the team's development process.
  - Conduct code reviews and collaborate with peers to maintain codebase standards.
  - Analyze and resolve issues in test and production environments.

• Mandatory Skills Description:

  - 3+ years of hands-on experience with Java in web application development.
  - Experience with Spring Core and Hibernate in a web context.
  - Good understanding of RESTful API design and service integration.
  - Experience with unit and integration testing (JUnit, Mockito or similar).
  - Familiarity with Git or other distributed version control systems.
  - Working knowledge of frontend technologies: ReactJS, TypeScript, HTML/CSS, and readiness to handle UI-related tasks on a regular basis.
  - Strong communication skills and ability to work effectively in a distributed team setup.

• Nice-to-Have Skills Description:

  - Bachelor's or Master's degree in Computer Science, Software Engineering, or a related field.
  - Familiarity and experience with modern Java versions (up to Java 21).
  - SQL knowledge; experience with PostgreSQL or Oracle is a plus.
  - Experience working with Docker: running applications and managing containerized dependencies.
  - Exposure to CI/CD pipelines and tools (Jenkins, Jira, Confluence).
  - Comfort working in Unix/Linux environments.
  - Interest in participating in project delivery coordination, planning, or stakeholder communication.

• Languages:
  • English: B2 Upper Intermediate
  • Ukrainian: C2 Proficient

An international software development and digital solutions company driven by 1,300 talented professionals across Cyprus, Malta, and Portugal.
Here, everything moves at rocket speed: driving innovation, pioneering projects, and fast-tracking careers.
Together, we turn ideas into action—let’s get started!

We're looking for a Senior Full Stack Developer with experience in Node.js and React to join our development team in Limassol, Cyprus!

✅ Requirements:

✔️ 5+ years of commercial experience in web development;
✔️ 3+ years of commercial experience with Node.js;
✔️ 3+ years of commercial experience as an FE (React) engineer;
✔️ Experience with NextJS, NestJS, Apollo, Material;
✔️ Experience with TypeScript;
✔️ Commercial experience with high-loaded SQL or NoSQL databases;
✔️ Experience with REST, GraphQL, WebSockets;
✔️ Understanding of TDD principles and writing tests;
✔️ Understanding of microservice architecture principles;
✔️ Experience with Git version control system;
✔️ Experience with RabbitMQ;
✔️ Experience with Redis;
✔️ Experience with MongoDB, MySQL databases;
✔️ At least an upper-intermediate level of English.

✅ Will be a plus

✔️2+ years of hands-on experience developing CI/CD/Micro Services architecture/Containers;
✔️Experience with Kubernetes and Docker;
✔️Experience with Queue brokers(RabbitMQ, Apache, etc.)

✅ Duties and opportunities

✔️In-house platform development;
✔️3rd party API integrations;
✔️Actively participate in developing new features from scratch;
✔️Work with own fintech solution;
✔️Bi-weekly sprints, SCRUM, grooming, planning.

✅ We offer excellent benefits, including but not limited to:
✔️Working with the latest technologies (Nest, Kubernetes, mongo, graphQL, MySQL, etc)
🧑🏻‍💻Learning and development opportunities and interesting challenging tasks;
📝Official employment in accordance with the laws of Cyprus and the EU, registration of family members;
✈️ Relocation package (tickets, staying in a hotel for 2 weeks);
🏋️‍♂️ Company fitness corner in the office for employees;
📚 Opportunity to develop language skills and partial compensation for the cost of language classes;
🎁 Birthday celebration present;
🏝 Time for proper rest and 24 working days of Annual Vacation;
🍲 Breakfasts and lunches in the office (partially paid by the company).

We’re looking for a Middle Full-Stack Developer to help build and scale various internal services and systems for a fast-growing iGaming platform focused on the Asian market. You’ll work closely with our designer on frontend interfaces and can be involved in high-load backend systems development, working on diverse internal tools and services including payment processing, user management, analytics, and more. 

If you enjoy diverse engineering challenges, taking ownership, and building reliable systems without heavy bureaucracy — we’d love to connect!

How You’ll Contribute

Frontend Development:

• Work closely with designer to implement modern user interfaces using React and TypeScript
• Develop admin dashboards and management interfaces for various business operations
• Create internal tools and CRM interfaces for different business services
• Build user-facing features for gaming platform management and analytics
• Implement real-time updates and notifications for system status and operations

• Work with Ant Design components and design system

   

Backend Development & High-Load Systems:

• Participate in developing and maintaining high-load backend services using Node.js and NestJS
• Work on diverse internal services (user management, analytics, reporting, CRM, admin tools, payment gateways, etc.)
• Handle different data models and business logic across multiple service domains
• Create APIs for internal tools and third-party integrations
• Work with PostgreSQL databases for various business data management
• Integrate payment systems and other external APIs when needed
• Contribute to building scalable architecture solutions depending on project requirements
• Contribute to implementing system redundancy and high availability solutions

What Makes You a Perfect Fit
 

Required Skills:

• 3-5 years of experience with full-stack development
• Strong React skills with modern hooks, state management (Redux/Context API), and TypeScript
• Solid Node.js and NestJS experience for backend development
• Experience with REST APIs, authentication, and data validation
• Good understanding of PostgreSQL and database design principles
• Experience working with designers and implementing UI/UX designs
• Experience with version control (Git) and collaborative development
• Understanding of modern CSS/styled-components and frontend tooling
• English proficiency for technical communication

Nice-to-Have:

• Understanding of high-load systems, scalability concepts, and performance optimization
• Understanding of microservices architecture and async processing (gRPC)
• Experience with Ant Design components and theming
• Basic AWS knowledge or cloud services experience
• Understanding of financial platforms or gaming industry systems
• Experience with testing frameworks (Jest, React Testing Library, Supertest)
• Knowledge of Docker and containerization
• Familiarity with monitoring tools and system observability
• Previous experience in fintech or gaming industries

• Experience working in cross-functional teams with designers and product managers

   

Hiring Process
The hiring process is clear and concise. It starts with a 30–40 min intro call with a Talent Partner — an opportunity to learn more about the project, Umber, and the team, as well as to discuss the candidate’s experience.
Next comes a technical interview (~1.5 hours) covering both React and Node.js.
The final step is a ~30 min conversation focused on managerial topics and organizational details.

Your next challenge is waiting. Let’s connect, talk about the impact we can make, and see if we’re the right fit for each other!

Who We Are
Umber is a full-cycle product agency founded in 2018. We started as a design-driven company and now build complex finance systems from the ground up. Our current focus: payment solutions, trading platforms, and tools for professional investors and traders.
We’re a small, ambitious, senior-level team working with top-tier financial clients. We’re passionate about finance, trading, and creating systems that don’t just work — they scale and shine under pressure. Check us out at https://umber.tech.

Why Join Us

• High-load engineering challenges — internal business systems, real-time trading, scalable backend systems, financial-grade security, modern React applications
• Cross-functional collaboration — work closely with designer and backend team on complex technical solutions
• Variety of projects — work on user management systems, analytics platforms, admin tools, CRM interfaces, and other internal services
• Small team, no bureaucracy — you’ll work closely with the CTO and contribute to architecture decisions
• Growth opportunities — learn from senior developers and expand from middle to senior level
• Flexibility — fully remote, Eastern European time zone overlap
• Mentorship and space to grow — if you’re good, we’ll make you great
• Impact — your code goes live, fast. You’ll contribute to both user-facing interfaces and high-load backend systems that power the entire gaming platform

🧠 About the Project:

We’re building Startup — an AI-driven SaaS platform that automates traffic from Dating Services into Instagram & OF subscribers.

It’s a mix of AI chat, mobile emulation, Web3 billing, and scale-through-automation.

We’re solving the problem of high CAC in adult/creator industries with scalable, safe, and clever automation. 

Early validation already confirmed — we have paying clients waiting for launch (OnlyFans managers, traffic agencies, and adult influencers).

🛠 What we’re looking for:

We’re seeking a technical partner / co-founder who will take ownership of the product and platform side.

Someone with strong fullstack skills and the ability (or desire) to lead a tech roadmap in a growing project.

This is a partnership — not a job. Equity-based. No fixed salary. Direct impact on growth, valuation, and direction.

💼 Your role:

• Build the MVP: mobile automation (swiping, messaging), user dashboard, chat logic
• Work closely with the founder (marketing/growth) to implement the roadmap
• Lead backend architecture, API, devops, and help shape product
• Grow into a CTO / lead engineer role as project scales
• Bring ideas to make the product more stable, scalable, smarter

🔧 Tech Stack (preferred, not all required):

• Backend: Node.js, Express/Nest.js, Puppeteer / Playwright, MongoDB, Redis
• Frontend: React, Tailwind, Recharts
• AI: OpenAI API, LangChain (prompt engineering, AI dialogue logic)
• Payments: NowPayments / Stripe (crypto + fiat)
• Web3 (optional): NFT-gated access, ethers.js
• Infra: Docker, GitHub Actions, DigitalOcean / Railway

✅ Ideal candidate:

• Fullstack JS/TS developer (strong middle or senior)
• Understands browser automation (Puppeteer / Selenium / Appium)
• Interested in traffic, AI, or adult tech
• Wants to co-build a scalable product from scratch
• Comfortable with equity-based commitment (5–10% equity with vesting)

📈 What we offer:

• Equity % with vesting
• Base monthly payment at early MVP stage (until first profit), then full equity-based model
• Full product ownership & freedom
• Well-defined GTM strategy, legal setup, financial model already done
• Access to early partners and revenue pipeline
• Strong potential for $5M+ exit within 12–18 months

🌍 Remote / async / flexible timezone.

Ukrainian founders. Open to working with developers in 🇺🇦 🇵🇱 🇱🇹 🇩🇪 🇳🇱 or globally.

🚀 Apply:

If you’re curious, serious, and want to build something with exit-level upside — Send your CV. 

Attach GitHub / LinkedIn / previous side-projects if any.

Let’s talk — we’ll send a short deck and idea overview.