Jobs

383
  • · 214 views · 70 applications · 12d

    Web3 Full-stack engineer

    Full Remote · Worldwide · 3 years of experience · B1 - Intermediate
    A bit about the job We're a team of 4 who’ve been building crypto products for the last 2.5 years. Our culture is lean — we do whatever it takes to get users. We move fast, iterate often, and are obsessed with finding product–market fit in...

    A bit about the job

    We're a team of 4 who’ve been building crypto products for the last 2.5 years.

    Our culture is lean — we do whatever it takes to get users.

    We move fast, iterate often, and are obsessed with finding product–market fit in crypto.

    Midas.trade is a trading terminal on Base (e.g., Axiom, Bullx, Photon, Gmgn).

     

     🔥 What you’ll do

    • Solve highly important problems and deliver working products to the end user
    • Learn to be flexible and understand goals: Finding the balance between “perfect code” and delivering value fast
    • Grow as a developer and improve your soft skills
    • Groom, Estimate, Plan, Code, Test, Deploy, Be Happy

     

    🥷🏿 What you have:

    We believe in the human potential to grow. Even if you don't meet all the requirements outlined, but believe you have what it takes, we encourage you to apply. We are open to considering candidates who have the potential to excel in this role.”

    • Frontend: React, shadcn, React Query, Next.js, viem/wagmi
    • Backend: Hono, Redis, ClickHouse, viem
    • Blockchain: Strong understanding of EVM and smart contracts
    • Rust (optional): Reth
    • 3+ years of experience developing products across web and mobile platforms.
    • Web3 experience or at least understanding the market, its culture, and best practices.
    • You thrive in fast-paced, autonomous environments without being managed.

    If you can cover at least 2/3 areas (Frontend, Backend, Solidity) - don’t hesitate to reach out

     

    💙 What we can offer

    People perform better when they’re happy, paid well, looked after, and supported.

    That’s just a fact. We will be able to offer more, once we will work full-time with you.

    • No strict 8to5 schedule. Work whenever you wish, we value your time and just want to commit to the deadlines and have things ready
    • Equity & Tokens are not being planned, but can be considered later with the company development
    • Fully remote
    • Awesome team that will help you grow professionally and personally
    • Newest and precisely picked technology stack – you will grow along with the best web3 toolings available.
    • A lot of responsibilities and opportunities to grow in the revolutionizing industry

     

    🚀 What does it take to be part of the adventure

    1. Share your Linkedin, CV and github link 
    2. A chat with Kien - a hustler
    3. 1.5-hour technical interview with Vlad - a hacker
    4. Offer: welcome onboard buddy!
    More
  • · 55 views · 14 applications · 18d

    Full-Stack Developer (Java + React.js)

    Full Remote · Countries of Europe or Ukraine · Product · 3 years of experience · B1 - Intermediate
    About Us: We are a well-established company specializing in sports betting and the development of analytical products tailored for both punters and bookmakers. Since our founding in 2011, we have built a successful, self-funded business-not a...

    About Us:
    We are a well-established company specializing in sports betting and the development of analytical products tailored for both punters and bookmakers. Since our founding in 2011, we have built a successful, self-funded business-not a startup-driven by innovation and a passion for creating world-class solutions.

     

    About the Role:

    We are seeking a talented Full-Stack Developer to join our team and contribute to the next stage of development for BetBurger - a leading sports betting arbitrage platform.

    This exciting new phase focuses on expanding our platform to attract and support newcomers and inexperienced players through a comprehensive Free Tools section, available on both web and mobile platforms. 

    Your work will directly shape a user-friendly experience that simplifies betting strategies and delivers clear, actionable insights to new users in the market.

     

    Key Responsibilities:

    • Develop and maintain new and existing services.
    • Write clean, efficient, and testable code.
    • Create and maintain technical documentation.

     

    Required Skills and Experience:

    • Java: 3+ years of hands-on experience.
    • React.js & TypeScript: 1+ years of professional experience.
    • MySQL: Proficient in database management and queries.
    • Spring Boot, Spring MVC: Proven expertise in building and maintaining applications.
    • Version Control: Strong knowledge of Git.

     

    Preferred Skills:

    • Experience with Google Cloud Platform (GCP).
    • Knowledge of Kubernetes.
    • Docker: Intermediate proficiency.
    • Experience in the betting industry.

     

    What we offer:

    • Ability to work remotely from anywhere in the world.
    • Paid vacation and sick days.
    • Full support and tax coverage (5.5%) for private entrepreneurs.
    • Participation in educational activities and thematic conferences.
    • English courses.
    • Corporate events.
    More
  • · 311 views · 100 applications · 26d

    Fullstack Developer

    Full Remote · Argentina, Canada, Spain, United States · 3 years of experience · A1 - Beginner
    We’re a seed-stage startup building a personalized health-data platform. Our stack ingests wearable & lab data, enriches it with AI-powered insights and delivers clear, actionable recommendations to users and clinicians alike. We’re backed by angels in...

    We’re a seed-stage startup building a personalized health-data platform. Our stack ingests wearable & lab data, enriches it with AI-powered insights and delivers clear, actionable recommendations to users and clinicians alike. 

     

    We’re backed by angels in digital health and have an MVP live on Expo/React Native.

     

    Why you may want to chat:

    • Our founder/CEO founded/IPO'd two multi-billion-dollar health-tech companies and led PayPal’s acquisition at eBay.
    • Our founder/CTO founded/sold a mid-sized deeptech AI startup.
    • CMO is a 4× NYT-bestselling physician.
    • Well-funded, team scaling fast, great compensation package, building extremely interesting new AI product
    More
  • · 187 views · 66 applications · 9d

    Senior Full-Stack Developer (React Native + Node.js)

    Full Remote · Countries of Europe or Ukraine · 5 years of experience · B2 - Upper Intermediate
    About Kilona.io At Kilona.io, we build high-quality, high-speed AI-powered web and mobile applications. We partner with global startups to deliver products that are fast, scalable, and beautifully engineered. Role Overview We’re looking for a Senior...

    🚀 About Kilona.io

    At Kilona.io, we build high-quality, high-speed AI-powered web and mobile applications. We partner with global startups to deliver products that are fast, scalable, and beautifully engineered.

    💼 Role Overview

    We’re looking for a Senior React Native/Node.js Developer to take a leading role in the development of a Mobile Networking App, while also contributing to two smaller parallel projects. This is a highly independent role where you’ll be expected to dive deep into complex tasks, make architectural decisions, and communicate directly with the client.
     

    We’re open to starting with part-time collaboration and scaling to full-time, depending on your preference.
     

    👥 Team & Projects

    • Main project: Mobile Networking App (active development)
    • Additional work: 2–3 smaller projects
    • Team: Designer, Project Manager, Senior Full-Stack Developer (you), and occasionally a Middle Full-Stack Developer
       

    ✅ Requirements

    • 5+ years in full-stack development (React Native + Node.js)
    • Strong expertise in JavaScript (ES6+), React, React Native, Node.js
    • Proven experience with app lifecycle & deployment (App Store / Google Play)
    • Strong architectural thinking and ability to design scalable solutions
    • Experience integrating databases (PostgreSQL, MongoDB, Firebase, Supabase, AWS DynamoDB, etc.)
    • Strong experience with GCP / AWS
    • Solid practical understanding of CI/CD pipelines and Git workflows
    • AI integration experience in mobile/web apps
    • Ability to take ownership, work independently, and deliver results
    • English: B2+ level (direct client communication)
       

    ✨ Nice to Have

    • Experience with AI-powered dev tools (ChatGPT, Cursor, Lovable, V0)
       

    🧑‍💻 Working Conditions

    • Hourly-based payment model (all overtime paid)
    • Fully remote — work from anywhere
    • Flexible schedule — overlap when needed, you manage your own time
    • Easy time-off policy — no bureaucracy
    • No screen trackers or micromanagement — focus on outcomes
    • Work on cutting-edge AI products
    • Opportunity to collaborate part-time or full-time
       

    🔍 Hiring Process
    1️⃣ Quick screening call (30 mins) OR Video presentation
    2️⃣ Technical interview (1 hr)
    3️⃣ Interview with management (optional)
    ➡️ Offer 🎉


    Let’s connect! 🌍 We’re looking for sharp minds ready to build fast and clean.

    More
  • · 157 views · 51 applications · 25d

    Full Stack Developer

    Full Remote · Countries of Europe or Ukraine · 5 years of experience · B1 - Intermediate
    About the Ruby Full Stack Developer role: As a Full Stack developer in our team you will be responsible for developing our unstructured data analysis platform, and will be able to provide end-to-end solutions - helping us to maintain and develop our...

    About the Ruby Full Stack Developer role:
    As a Full Stack developer in our team you will be responsible for developing our unstructured data analysis platform, and will be able to provide end-to-end solutions - helping us to maintain and develop our server-side and client-side code, but also to face the many exciting challenges we have when dealing with unstructured data - processing it, analyzing it and making all this accessible to our customers in an easy-to-consume and insightful way.

     

    You have a unique opportunity to join a strong team and shape our infrastructure and product.

    You’ll need to be a proficient developer, with experience developing in Ruby, who is excited about all the big challenges that dealing with big data brings with it (including concurrency issues, data flow, scalability and performance issues). Experience with Python is highly advantageous, as the platform includes microservices implemented in that environment.

    Required Experience (Must):

    • At least 5 years of experience in web backend or full-stack development
    • At least 3 years of experience developing in Ruby/RoR
    • At least 2 years of experience developing modern frontend applications
    • Solid knowledge of SQL
    • Experience with CI/CD systems
    • Troubleshooting and analytical skills
    • Good communication and collaboration skills

      Big advantage:
    • Experience developing in Python, using common libraries including FastAPI and ML libraries 
    • Experience working with Vue.js 
    • Experience with ElasticSearch 
    • Experience with queue management system such as Sidekiq 
    • Experience with unstructured data and big data 
    • Proficiency and experience with using AI coding tools (such as Cursor, Codex, etc) as an integral part of your workflow 


       

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  • · 21 views · 4 applications · 26d

    Lead Full-Stack Engineer (.Net and React) / Tech Lead

    Full Remote · Ukraine · Product · 7 years of experience · B2 - Upper Intermediate
    About the Role As a Lead Full-Stack Developer (Tech Lead), you will take a hands-on leadership role in the design, development, and delivery of high-traffic, customer-facing applications across international markets including the United Kingdom,...

    About the Role

     

    As a Lead Full-Stack Developer (Tech Lead), you will take a hands-on leadership role in the design, development, and delivery of high-traffic, customer-facing applications across international markets including the United Kingdom, Germany, Spain, France, and Japan. In addition to building scalable solutions using React, .NET Core, .NET 6+, and C#, you will guide the technical direction of the team, mentor engineers, and ensure best practices in architecture, code quality, and deployment.

    This is a high-impact role where you’ll shape how we scale and evolve our international platform, which supports 1M+ daily users and processes over 2B monthly requests. You’ll work cross-functionally with Product, UX, and Engineering stakeholders and help drive our strategy around performance, scalability, and AI integration.

     

    What You’ll Do

     

    • Lead the design and development of full-stack web applications using React and .NET technologies.
    • Act as a technical mentor and thought leader for a team of engineers, supporting growth and encouraging a culture of engineering excellence.
    • Collaborate with Product Managers, UX Designers, and cross-functional teams to translate business requirements into scalable technical solutions.
    • Set and maintain high standards for code quality, testing, and CI/CD practices.
    • Conduct code reviews, provide architectural guidance, and ensure alignment with best practices.
    • Monitor production systems, ensure high availability and performance, and proactively address technical debt.
    • Drive the implementation of AI-powered features and LLM-based flows, contributing to our innovation strategy.
    • Promote a DevOps mindset and lead continuous improvements in deployment frequency, development velocity, and system reliability.

       

    What We’re Looking For

     

    • 7+ years of experience in commercial full-stack development, with at least 2+ years in a technical leadership or lead developer role.
    • Deep expertise in .NET Core, C#, and React.
    • Strong understanding of modern web architecture, microservices, REST APIs, and asynchronous programming.
    • Proficiency with automated testing frameworks such as Jest/Vitest, Playwright, and NUnit.
    • Experience guiding teams through Agile development processes and continuous integration/delivery.
    • Upper-Intermediate level of English or higher, with strong communication and collaboration skills.
    • A proactive, solution-oriented mindset with a passion for mentoring and enabling teams.
    • Curiosity and enthusiasm for AI technologies, with a desire to explore and implement AI-driven solutions.

       

    Perks and Benefits

     

    • Time off throughout the year (paid and unpaid)
    • Professional development support and encouragement
    • Resources to help improve your overall well-being
    • Free membership to dive into JA product


     

    More
  • · 565 views · 174 applications · 19d

    Freelance Full-stack Software Engineer (Senior-Level)

    Full Remote · Worldwide · 9 years of experience · C1 - Advanced
    As a software engineer, you will be part of a team of engineers supported by the CEO and the CTO. Your role will be to design and deploy HQ’s various systems: The mobile native Model application. The web Workspace application for agencies and...

    As a software engineer, you will be part of a team of engineers supported by the CEO and the CTO.

     

    Your role will be to design and deploy HQ’s various systems:

    • The mobile native Model application.
    • The web Workspace application for agencies and brands.
    • The backend serving our clients applications.

       

    You will also be responsible for :

    • Co-building the startup with the CEO and the CTO.
    • Build the technical aspects of the product.

       

    In addition to your technical skills, you'll be able to take on the role of technical customer success manager for our users and customers.

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  • · 117 views · 43 applications · 5d

    Senior FullStack developer

    Full Remote · Ukraine · 6 years of experience · B2 - Upper Intermediate
    We’re looking for a skilled and experienced Full-Stack Developer to join our team. You’ll be working on modern web applications using React on the frontend and Node.js on the backend. This is a great opportunity to influence architecture, contribute to...

    We’re looking for a skilled and experienced Full-Stack Developer to join our team. You’ll be working on modern web applications using React on the frontend and Node.js on the backend. This is a great opportunity to influence architecture, contribute to product decisions, and work closely with a strong tech team.

    Tech Stack:

    • Frontend: React, TypeScript, Redux (or Zustand/MobX)
    • Backend: Node.js, Express (or Nest.js)
    • DBs: PostgreSQL, MongoDB
    • Tools: Docker, Git, CI/CD, AWS/GCP

    Responsibilities:

    • Develop and maintain scalable web applications
    • Collaborate with designers, PMs, and other developers
    • Take ownership of features from idea to production
    • Write clean, testable, and efficient code
    • Participate in code reviews and mentor team members

    Requirements:

    • 6+ years of experience with JavaScript/TypeScript
    • Strong hands-on experience with React and Node.js
    • Deep understanding of REST APIs and web app architecture
    • Experience with relational and/or NoSQL databases
    • Familiarity with cloud services (AWS/GCP) and CI/CD workflows
    • Upper-Intermediate English or higher

    Nice to Have:

    • Experience with microservices
    • Familiarity with GraphQL
    • Previous startup or product company experience

    What We Offer:

    • Competitive compensation
    • Flexible schedule and remote-friendly culture
    • 24 vacation days + sick leaves
    • Work with a senior-level team and modern tech stack
    • Impactful role in a growing product

     

     

     

     

     

    More
  • · 193 views · 54 applications · 23d

    Middle Full-stack Developer (WordPress/WooCommerce/Laravel/Vue.js)

    Full Remote · Countries of Europe or Ukraine · 3 years of experience · B1 - Intermediate
    Vacancy Description: We are looking for a Middle Full-stack Developer to join our team for various outsourcing projects. You will have the opportunity to influence architectural decisions, contribute your vision, and actively participate in shaping the...

    Vacancy Description:
    We are looking for a Middle Full-stack Developer to join our team for various outsourcing projects. You will have the opportunity to influence architectural decisions, contribute your vision, and actively participate in shaping the product’s future. We follow sprint-based code reviews, and goals are set on a weekly basis to ensure progress tracking. A GitHub portfolio showcasing your previous work is a significant plus.

    Requirements:
     
     

    • 3+ years of experience in full-stack development;
    • Strong knowledge of PHP, Laravel, WordPress, WooCommerce;
    • Proficiency in MySQL, Redis;
    • Solid understanding of OOP principles (SOLID, YAGNI, DRY, KISS);
    • Experience working with REST API and API documentation (OpenAPI/Swagger);
    • Strong Git skills;
    • English – Intermediate+;
    • Experience with cloud services like AWS, Vapor, Google Cloud;
    • Knowledge of HTML, CSS, SASS/LESS;
    • Good knowledge of JavaScript;
    • Understanding and practical experience with Docker, Docker Compose;
    • Familiarity with CI/CD processes.
       

    Would Be a Plus:
     
     

    • Experience with Microservices;
    • Knowledge of PHPUnit;
    • Experience working with CMS platforms (OpenCart, Shopify);
    • Knowledge of Node.js;
    • Plugin development experience;
    • Background in developing online stores with other CMS platforms (OpenCart, Shopify, etc.).

     
    What You Will Do:
     
     

    • Participate in the development and maintenance of WordPress/WooCommerce and Laravel-based projects;
    • Develop new features and optimize existing ones;
    • Ensure code quality, performance, and scalability;
    • Conduct code reviews and collaborate with other developers;
    • Work closely with UI/UX designers, project managers, and clients to deliver high-quality solutions.

     
    Frequently Asked Questions:
     
    Does the job come with a probation period?
    Yes, there is a three-month probation period.
     
    What is the expected work schedule?
    Full-time, flexible, but please start no later than 11:00 AM (average 8 hours per day). The Kyiv office is open from 9:00 AM to 8:00 PM. You can work remotely or choose a hybrid mode.
     
    How many vacation and sick days are provided?
     
     

    • Annual paid vacation – 21 working days;
    • Paid confirmed sick leave;
    • 6 unconfirmed sick days/days off per year.

     
    What benefits are offered?
     
     

    • English courses (up to $80/month after the probation period);
    • Compensation for a sports center subscription (up to $80/month after the probation period);
    • Medical insurance (50% after the probation period) or $200 per year for healthcare;
    • Corporate events.

     
    Hiring Process:
     
     

    1. HR call with a recruiter;
    2. Interview with the hiring manager (1.5 hours);
    3. Reference check;
    4. Offer for cooperation with Develux.

    We believe that people with different perspectives and experiences drive innovation, helping us create unique solutions.
     
    Note:Feedback regarding CV review results will be provided only if we decide to move forward with your application. Otherwise, your data will be retained in our database, and we will contact you if a suitable opportunity arises. The review process takes up to 10 working days.
     

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  • · 140 views · 29 applications · 21d

    Middle Fullstack Developer (React + Node)

    Full Remote · Countries of Europe or Ukraine · 2 years of experience · B2 - Upper Intermediate
    About Sinova Development: Our main specialization is web development. We provide a full cycle of the web development services. Our projects span a wide range of industries, including AI, finance, medical, education, and marketing & advertising....

    About Sinova Development:

    Our main specialization is web development. We provide a full cycle of the web development services. 
    Our projects span a wide range of industries, including AI, finance, medical, education, and marketing & advertising. 

    Requirements:


    — B2 level of English of higher 

    — Proficiency in TypeScript and JavaScript

    — Extensive knowledge of Next.js;

    — Strong experience with React;

    — Hands-on experience with state management libraries such as Redux, Mobx, Jotai, or Recoil;

    — Solid experience with styling using TailwindCSS, Sass/Less, or CSS Modules;
    — Proficiency in Node.js;

    — Experience with backend frameworks like Nest.js or Express.js

    —Knowledge of both relational and non-relational databases;

    —Proficiency in using Postman

    — Experience with Swagger;

    — Understanding of JWT (JSON Web Tokens)

    — Strong knowledge of Git
     



    Will be a plus:

    — Experience with AWS
    — knowledge of Electron.js
    — Experience in Web extension development

    What we offer:

    — Competitive salary;

    — Ability to work remotely

    — flexible working day, 5 days a week;

    — Career growth potential;

    — Friendly team

     

    Please send your CV here or via email.

     

    You’ll be invited to a personal interview if the first stage is successfully completed. 

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  • · 169 views · 25 applications · 11d

    React Native Developer to $3000

    Full Remote · Countries of Europe or Ukraine · 2 years of experience · B1 - Intermediate
    Hi! We're currently looking for an experienced React Native Developer (Node.js and React.js would be a plus) to join our team at CML Team! If you have a strong background in React Native and Expo, we'd love to connect with you. As part of our team, you’ll...

    Hi! We're currently looking for an experienced React Native Developer (Node.js and React.js would be a plus) to join our team at CML Team! If you have a strong background in React Native and Expo, we'd love to connect with you.

    As part of our team, you’ll be working on exciting, high-impact projects where your expertise in mobile development will directly shape the products we build. Your skills will be essential to delivering seamless, high-performance applications.

     

    🔧 What We’re Looking For:

    -2+ years of experience in React Native and Expo
    -Experience developing large-scale applications, with proven track record of publishing apps to the App Store or Google Play
    -Excellent English communication skills for effective collaboration in a global team

     

    🎯 Bonus Points for:

    -Experience or willing to learn Node.js and React.js

    -Experience with SQL or NoSQL databases and cloud platforms like AWS and Google Cloud
    -Knowledge of additional backend languages (C#, Java 8+) or frontend frameworks (Vue.js) to show your versatility

     

    At CML Team, your contributions directly impact our growth and innovation. Every project is an opportunity to showcase your skills and make a real difference.

    If you're excited about joining a dynamic, cutting-edge team, let’s chat!

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  • · 50 views · 4 applications · 12d

    Senior Full Stack Developer (Node.js / React)

    Office Work · Portugal · Product · 5 years of experience · B2 - Upper Intermediate
    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...

    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 (80% Backend & 20% Frontend) to join our development team in Lisbon, Portugal!

    ✅ Responsibilities:
    ✔️ Design, implement, and optimize robust solutions to enhance our proprietary platform, ensuring high performance, scalability, and security.
    ✔️ Develop and maintain complex integrations with external APIs and partner systems, ensuring data consistency and alignment with technical requirements.
    ✔️ Actively participate in all stages of creating new features, from initial concept and technical design to implementation and final delivery.
    ✔️ Contribute to the development and continuous improvement of our proprietary fintech solution, ensuring innovation and alignment with market and user needs.
    ✔️ Collaborate in agile development cycles with bi-weekly sprints, utilizing practices such as SCRUM, grooming, and sprint planning to deliver consistent value to the product.
    ✔️ Identify opportunities for technical and process enhancements, driving innovation and efficiency throughout the software development lifecycle.
    ✔️ Work closely with design, product, and other stakeholders to ensure solutions meet customer and business expectations.

    ✅ Requirements:
    ✔️ 5+ years of commercial experience in web development.
    ✔️ 3+ years of commercial experience with Node.js.
    ✔️ 3+ years of commercial experience as a Frontend Engineer with React.
    ✔️ 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, and MySQL databases.
    ✔️ Advanced level of English.

     

    We offer excellent benefits, including but not limited to:
    🧑🏻‍💻 Learning and development opportunities and interesting, challenging tasks.
    ✈️ Relocation package (tickets, staying in a hotel for up to 2 weeks, and visa relocation support for our employees and their family members).
    📚 Opportunity to develop language skills, with partial compensation for the cost of English and Portuguese language classes (for localization purposes).
    🎾  Partial compensation for tennis and padel lessons.
    🏀 Urban Sport membership benefit (the most diverse sports and wellness offering in Europe, with more than 50+ activities).
    🏥 Private medical coverage, including inpatient, outpatient, dental care, annual check-ups, and maternity support.
    🏝 Time for proper rest, with 24 non-business days per year and an additional 6 paid sick days.
    🚌 Transport compensation - 300 euros net per month.
    📈 Competitive remuneration level with annual review.
    🤝 Teambuilding activities.

     

    Recruitment Process:

    1. Interview with the Recruiter.
    2. Technical Assessment via HackerRank.
    3. Technical Interview with the Technical Team.
    4. Final Interview with the Hiring Leads.
    5. Offer.

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  • · 46 views · 19 applications · 10d

    Senior Full Stack Engineer (Ruby/JavaScript)

    Full Remote · Countries of Europe or Ukraine · Product · 6 years of experience · B2 - Upper Intermediate
    We're looking for an experienced Software Engineer to join our team! The position will include building great products, tackling interesting challenges, and contributing to our engineering culture. We expect you to work in pairs, use test-driven...

    We're looking for an experienced Software Engineer to join our team! The position will include building great products, tackling interesting challenges, and contributing to our engineering culture. We expect you to work in pairs, use test-driven development, be experienced in building complex web applications, and write both clean and maintainable code.

     

    Your skills:

    🔶 Excellent general programming skills, ability to work with complex codebases

    🔶 Extensive knowledge of Ruby, Ruby on Rails, and its testing frameworks

    🔶 Experience in writing JavaScript applications using modern frameworks

    🔶 Practical experience in different DBs (e.g. RDBMS, Key Value / Tuple Store, Wide Column Store / Column Families, Document Store)

    🔶 Experience with cloud hosting providers (e.g. AWS, Google Cloud, Digital Ocean, Heroku)

    🔶 Comfortable with the UNIX/Linux command line

    🔶 Experience in test-driven development and pair programming (good to have)

    🔶 Comfortable taking the lead on projects and working without lots of oversight

    🔶 Good English (both written and spoken)

     

    Your responsibilities:

    🔷 End-to-end product development

    🔷 Write reusable and maintainable code

    🔷 Write tests to thoroughly validate the correctness of your code

    🔷 Actively contribute to the identification of problems and their solutions

    🔷 Collaborate in a cross-functional team to ensure the project meets business objectives and compliance standards

    🔷 Work in a flat-structured company

     

    We offer: 

    🔷 Outstanding development culture bit.ly/rw-devculture
    🔷 Collaborate with us remotely from any location or in one of our offices (Kyiv/Krakow) bit.ly/rw-remotecollab
    🔷 We offer flexible hours
    🔷 Get competitive compensation, access to savings program, and microcredits
    🔷 Phantom Stock Units to reward your contribution
    🔷 Thanks to our hardware policy, we use the best equipment and can regularly update it
    🔷 34 days a year as paid time off (24 standard days + 10 more to cover public holidays)
    🔷 Health policy budget will cover your private sports and healthcare expenses
    🔷 Participate in local and international conferences
    🔷 Our offices are equipped with modern ergonomic chairs and standing desks
    🔷 You can always find fresh food and drinks in our kitchen
    🔷 In Ukraine, we collaborate through Diia.City

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  • · 336 views · 95 applications · 6d

    Full-Stack Developer (Backend-Focused, NestJS + PostgreSQL) — Payment Gateway Aggregator

    Full Remote · Countries of Europe or Ukraine · 2 years of experience · A2 - Elementary
    We’re looking for a Full-Stack Developer with a backend focus to strengthen our team on a high-load payment gateway aggregator used across several markets in Asia and LATAM. The platform processes thousands of transactions daily and integrates with local...

    We’re looking for a Full-Stack Developer with a backend focus to strengthen our team on a high-load payment gateway aggregator used across several markets in Asia and LATAM. The platform processes thousands of transactions daily and integrates with local payment providers in each region — acting as a key part of the company’s financial operations.

    You’ll work mostly on the backend: improving reliability, integrating with new providers, and making sure everything scales smoothly. Some occasional frontend work (React) may pop up too.

     

    How You’ll Contribute

    • Develop and scale backend services for payment processing and provider integrations
    • Work with local APIs and protocols across different markets (e.g., Thailand, Brazil, Philippines)
    • Optimize database performance and handle transactional flows reliably
    • Contribute to system stability and fault tolerance under increasing load
    • Occasionally assist with frontend tasks (React) — e.g., dashboards, transaction monitoring
    • Collaborate with a small full-stack team and participate in technical decision-making

     

    What Makes You a Perfect Fit

    • 2+ years of experience with Node.js/NestJS and PostgreSQL
    • Solid understanding of backend architecture, transactional flows, and API integrations
    • Experience working on high-load systems or products with real-time data
    • Strong TypeScript skills and a clean coding style
    • Familiarity with microservices, Docker, and CI/CD pipelines
    • Comfortable switching context when needed and supporting frontend if required (React)

     

    Nice-to-Haves

    • Experience integrating with payment systems or financial APIs
    • Understanding of fallback mechanisms and system reliability patterns
    • Interest in infrastructure monitoring and performance optimization
    • Experience working with region-specific products or international setups

     

    Our Tech Stack

    NestJS, Node.js, TypeScript, PostgreSQL, React, microservices, Docker, AWS, CI/CD pipelines, high-load architecture and provider APIs.

     

    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
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  • · 124 views · 52 applications · 25d

    Full-Stack Developer for the Steam Analytics Platform

    Full Remote · Worldwide · 1.5 years of experience · B1 - Intermediate
    Full-Stack Developer for the Steam Analytics Platform We’re building Steam Analytics—a platform that collects and visualises data on Steam games. The system aggregates information from Steam and other public sources via APIs and web-scraping to show...

    Full-Stack Developer for the Steam Analytics Platform

     

    We’re building Steam Analytics—a platform that collects and visualises data on Steam games. The system aggregates information from Steam and other public sources via APIs and web-scraping to show player activity, game performance over time, and comparative project analytics.

     

    An MVP now runs on AWS with PostgreSQL, but we plan to simplify the infrastructure and migrate to Firebase for faster development and easier scaling.

     

    🛠 Current tech stack:

     

    Front-end: Next.js

    Back-end: Nest.js

    Database & MVP infrastructure: PostgreSQL + AWS

    Planned infrastructure: Firebase (Firestore, Auth, Hosting)

    Data processing: custom parsers, cron jobs

     

    📌 Key responsibilities:

     

    • Optimise the back-end and data schema
    • Migrate the infrastructure to Firebase
    • Work with large, frequently updated data sets

      Example: continuously collect and store historical data for thousands of game titles at intervals from 15 minutes to 24 hours

    • Extend both front-end and back-end functionality
    • Prepare the platform for authentication and subscription-based monetisation
    • Ensure reliable production deployment (security, scalability, monitoring)

     

    Future task: integrate social-media APIs (e.g. Reddit, X/Twitter) to broaden analytics

     

    Requirements:

     

    • Experience handling large data volumes
    • Deep knowledge of database optimisation and back-end performance tuning
    • Hands-on experience with Firebase
    • Proven track record of shipping projects to production
    • Self-driven, proactive, and able to make independent technical decisions

     

    💼 What We Offer:

     

    • Remote work
    • Competitive salary
    • Chance to be part of a project that’s both engaging and useful
    • 2 weeks of paid vacation per year
    • 3 paid sick days per month

       

    Can’t wait to hear from you — let’s build something great together!

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