Jobs Node.js

About the Role

We are urgently looking for a Senior iOS Developer with strong native iOS expertise and solid experience in React.js and Node.js.

Responsibilities

• Develop and maintain native iOS applications (Swift / SwiftUI / UIKit)
• Participate in architecture design and technical decision-making
• Integrate mobile applications with backend services
• Collaborate with frontend team (React.js)
• Work with Node.js backend (API integration and possible improvements)
• Conduct code reviews and mentor team members
• Participate in sprint planning and task estimation

About the Role

We are looking for an experienced Senior Developer to lead and deliver advanced e-commerce solutions on Shopify. You will be responsible for building custom plugins, integrations, and scalable modules that power complex online businesses.

This role combines deep Shopify expertise with strong backend and frontend skills, working closely with product, design, and business teams.

Key Responsibilities

Shopify & E-commerce Development

• Design, develop, and maintain custom Shopify apps and plugins
• Customize Shopify themes and storefronts (Liquid, Hydrogen, APIs)
• Build and optimize advanced product workflows and checkout experiences
• Implement custom features such as:
  • Build-Your-Own-Box (BYOB)
  • Rating & Reviews Systems
  • Wishlist & Favorites
  • Subscription & Loyalty modules
  • Custom pricing and B2B logic

Systems Integration

• Develop and maintain ERP / MIRP / CRM integrations
• Implement automated data synchronization:
  • Orders
  • Inventory
  • Customers
  • Pricing
  • Invoices
• Build middleware services and APIs
• Ensure data reliability and performance

Reporting & Data

• Create custom reports
• Build automated exports and analytics tools
• Support financial, sales, and operational reporting
• Optimize data pipelines

Required Skills & Experience

Core Skills

• 3+ years of professional development experience
• Strong expertise in Shopify ecosystem
  • Custom Apps (REST & GraphQL APIs)
  • Webhooks
  • Admin APIs
  • Checkout Extensions
• Advanced knowledge of:
  • JavaScript / TypeScript
  • Node.js
  • REST & GraphQL APIs
• Experience with ERP / backend integrations
• Solid understanding of databases (SQL / NoSQL)

Shopify & E-commerce

• Theme customization (Liquid, HTML, CSS)
• Shopify Plus experience (nice to have)
• App development and deployment
• Performance optimization

DevOps & Tools

• Git / GitHub / GitLab / Bitbucket
• CI/CD pipelines
• Cloud platforms (AWS / GCP / Azure – bonus)
• Docker (bonus)

Bonus / Nice-to-Have Skills

• React / Next.js / Hydrogen
• Headless commerce
• Microservices architecture
• BI / analytics tools
• Payment gateway integrations
• Internationalization & multi-market setups
• Accessibility (WCAG)

Soft Skills

• Strong problem-solving mindset
• High attention to detail
• Ability to work independently
• Excellent communication skills
• Experience working with stakeholders
• Mentoring mindset

What We Offer

• Competitive salary / contract rate
• Flexible working hours
• Remote-friendly environment
• Challenging international projects
• Long-term growth opportunities
• Modern tech stack

Why Join Us?

You will work on complex, high-impact e-commerce systems, combining:

✔️ Custom Shopify development
✔️ Enterprise integrations
✔️ Scalable architecture
✔️ Modern frontend

You will have real ownership and influence over technical decisions.

We are looking for a Junior Back-End Engineer (Nodejs/Express) for a small team that maintains a set of in-house ad tech/analysis tools in the gambling/affiliate marketing domain.

You will:

• Write code for in-house tooling for high-load ads-tracking ecosystem
• Collaborate with the marketing team to develop and maintain interactive ads
• Learn and master Nodejs backend practices, microservice ad-tech infrastructure in the team of experienced devs

Hard requirements:

• 1+ year of experience (we are ready to onboard a strong self-starter!) in Nodejs backend development
• Understanding of event-based and asynchronous approach
• Basic understanding of API design
• Understanding of NoSQL databases
• Familiarity and strong desire to follow software best practices

Will be a strong advantage:

• Experience in Telegram (or other messengers) Bot and Client API
• Knowledge of ddd methodology

Soft requirements:

• Readiness to collaborate with stakeholders of various internal projects in dynamic delivery process
• Autonomy and self-reliance, being ready to work in a small product team
• Ability to multitask and constantly improve dev skills

We offer:

• Full remote or hybrid work (up to you)
• Flexible working schedule (Monday-Friday)
• 24 days of paid vacation per year + flexible 15 sick leaves
• Birthday present and cool parties
• Help in emergencies and therapy if needed
•  

Please send your CV and let’s work!

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

❗️Please note that this role is office-based for Poland, Warsaw.

❗️If you need to be relocated, we take care of the process.

We are looking for a skilled Senior Node.js Developer to join our team in our Warsaw office.

✅ Requirements:

✔️Strong knowledge of JavaScript and the ECMAScript 6 standards;

✔️5+ years of commercial experience with Node.js and Nest.js;

✔️5+ years of commercial experience in web development;

✔️Commercial experience of working with high-load SQL or NoSQL databases;

✔️Commercial experience of implementing the REST, GraphQL, and WebSockets;

✔️Understanding of the TDD principles and experience of writing tests;

✔️Understanding of microservice architecture principles;

✔️Experience of GIT version control system;

✔️Experience with RabbitMQ;

✔️Experience with Redis;

✔️Experience with databases MongoDB, MySQL;

✔️At least an Intermediate level of English.

✅ Will be a plus:

✔️2+ years of hands-on experience developing over CI/CD/Micro Services architecture/Containers;

✔️Experience with Kubernetes;

✔️Experience with Nats;

✔️Experience with TypeScript.

✅ Duties and opportunities:

✔️In-house platform development;

✔️3rd party API integrations;

✔️Actively participate in developing new features from scratch.

✅ We offer excellent benefits, including but not limited to:

🚀 Career growth opportunities in an international and dynamic environment;
📚 Opportunity to develop language skills with partial compensation for language courses;
🎁 Special gifts for birthdays, weddings, and newborns;
🏝️ 20 working days of paid annual vacation, plus paid sick leave;
🍲 Office snacks and refreshments;
🏋️‍♂️ Sports package to support a healthy lifestyle;
🩺 Comprehensive medical insurance for you and your partner;
📍 Comfortable office with great facilities in a prime location;
 🎉 Exciting corporate events, team-building activities, and international company parties.

Bold moves start here. Make yours. Apply today! 

BrainRocket is a global company creating end-to-end tech products for clients across Fintech, iGaming, and Marketing. ‍Young, ambitious, and unstoppable, we've already taken Cyprus, Malta, Portugal, Poland, and Serbia by storm. Our BRO team consists of 1,300 bright minds creating innovative ideas and products. We don’t follow formats. We shape them. We build what works, launch it fast, and make sure it hits.

❗️Please note that this role is office-based for Spain.

❗️If you need to be relocated, we take care of the process.

✅ Requirements:

✔️Strong knowledge of JavaScript and the ECMAScript 6 standards;

✔️5+ years of commercial experience with Node.js and Nest.js;

✔️5+ years of commercial experience in web development;

✔️Commercial experience of working with high-load SQL or NoSQL databases;

✔️Commercial experience of implementing the REST, GraphQL, and WebSockets;

✔️Understanding of the TDD principles and experience of writing tests;

✔️Understanding of microservice architecture principles;

✔️Experience of GIT version control system;

✔️Experience with RabbitMQ;

✔️Experience with Redis;

✔️Experience with databases MongoDB, MySQL;

✔️At least an Intermediate level of English.

✅ Will be a plus:

✔️2+ years of hands-on experience developing over CI/CD/Micro Services architecture/Containers;

✔️Experience with Kubernetes;

✔️Experience with Nats;

✔️Experience with TypeScript.

✅ Duties and opportunities:

✔️In-house platform development;

✔️3rd party API integrations;

✔️Actively participate in developing new features from scratch.

✅ We offer excellent benefits, including but not limited to:

🧑🏻‍💻 Learning and development opportunities and interesting, challenging tasks;
📝 Official employment following Spain/EU laws, including registration of family members;
✈️ Relocation package (flight tickets + 2-week hotel stay);
📚 Language development support and partial compensation for classes;
🎁 Birthday celebration gift;
🏝 23 working days of Annual Vacation for proper rest;

🏋️‍♂️Social Club and more than 50 events per year - coming soon;

⚖️ Competitive remuneration level with annual review;

🏄🏻‍♂️ Teambuilding activities.

Bold moves start here. Make yours. Apply today! 

We are building a high-performance, real-time slot gaming platform and are looking for a Senior Backend Developer who will take ownership of our entire backend direction.

🧩 What you’ll do

• Own and drive the backend direction of the company as one of the key technical leaders;
• Design and implement new game mechanics on top of our existing PGS, extend its capabilities, and contribute to core gameplay engine development;
• Architect scalable, secure, and high-performance backend services using Node.js and TypeScript;
• Work closely with Game Logic, Frontend, and DevOps teams to ensure seamless integrations, real-time performance, and platform-wide consistency;
• Define backend engineering standards and enforce best practices across code quality, architecture, and performance;
• Design and maintain backend infrastructure: schemas, caching, messaging flows, microservices, gateways;
• Participate in roadmap planning, technical decision-making, and architectural discussions as the platform evolves;
• Support a rapidly growing product and engineering environment — we are scaling fast, and you will play a major role in that growth.

🧠 What you bring

• 5+ years of backend development experience, including ownership of complex systems or features;
• Strong expertise with Node.js + TypeScript and modern frameworks (Fastify, Nest.js);
• Advanced knowledge of SQL and NoSQL databases: PostgreSQL, MongoDB, Redis;
• Solid experience with message brokers (RabbitMQ or Kafka) and queue-based, event-driven design patterns;
• Deep understanding of distributed systems, microservices, and real-time communication (WebSocket, Socket.io);
• Experience building high-performance APIs, async flows, caching strategies, and scalable architectures;

• Confident with CI/CD, Git, automated testing (Jest), and monitoring/observability tools (Grafana, Loki, Tempo).

   

💎 Nice to have

• Knowledge of PHP/Laravel or experience with other backend ecosystems;
• Familiarity with AWS, Docker, Kubernetes, containerized deployments;
• Experience with RNG, platform integrations, or the iGaming ecosystem.
   

🎁 Benefits

— 21 vacation days + 5 extra day-offs annually;
— 12 paid sick days;
— Fully remote format — work from anywhere you feel productive;
— Flexible schedule: start your day anytime between 08:00–12:00 CET;
— Fixed budget for health insurance and gym/fitness;
— We provide all required work equipment;
— Zero bureaucracy and direct communication with founders and C-level;
— Minimal meetings, async-friendly workflow;
— Startup energy: fast motion, creativity, and tight-knit communication;
— Business trips and team meetups several times per year;
— Multiple salary payout options (flexible formats);
— …And many more perks unlocked after we hit break-even.

Company is looking for a Senior Backend Engineer. As a Senior Software Engineer you will take a significant part in the development of company’s core payments platform. Company's payments platform provides secure and efficient payment processing by optimizing payment routing flows, ensuring transaction security, and managing refunds. You will work with diverse payment gateways to enable a wide range of alternative payment methods, build expertise with various digital wallets, credit options, and region-specific payment solutions, while also implementing fraud detection capabilities, manage the full lifecycle of chargebacks, and take part in building company's data lake for analytics and operations. If you are passionate about technology and software development, with end-to-end experience developing in a fast-growing startup environment, we want to meet you!

Responsibilities 
• Building our high scale cloud-based payments platform in Node.js • Have end to end ownership: Design, build, ship, measure and maintain low latency, high availability and high performance services. 
• Bring your unique experience - we are open to new ideas and expect you to bring our team and platform to a new level 
• Optimize resource usage (database, infrastructure, integrations) 
• Mentor and guide software engineers and help build a professional and effective team. 

Requirements: 
• At least 5 years of proven experience in developing end-to-end web applications (experience in Fintech companies - advantage) 

• Proficiency with cloud-based environments (AWS - preferred) 

• Proficiency with Node.js / Python / Java

• Experience with Docker 

• Experience with NoSQL solutions (MongoDB, Redis - advantage) 

• Experience with Microservices 

• Excellent problem-solving and troubleshooting skills 

• Knowledge of software development lifecycle 

• Strong communication and collaboration abilities 

• Self-motivated with a startup mindset and ability to work independently

About

EdSpan is an innovative EdTech company dedicated to creating cutting-edge learning experiences that empower the next generation of students. Our collaboration with a US-based private school network helps us better understand user needs while expanding our B2C and B2B products to a broader audience. Our current focus includes an AI-guided tutoring experiences, a peer-to-peer tutoring platform, and a custom learning management system.

We operate within a framework of clearly defined processes supported by automation for routine tasks, and open, productive collaboration across the team. Our workflows are based on Agile principles, with daily stand-ups, bi-weekly sprints, and other key Scrum practices. At the same time, we keep meetings to a minimum to ensure everyone can stay focused on delivering high-quality results and continuing to grow professionally.

Requirements

• 4 or more years of experience in backend development
• Experience with PHP: version 8.0 and above, Laravel or Symfony frameworks
• Experience with NodeJS: any of TypeScript-based frameworks
• Good understanding of OOP principles and best practices (DRY, KISS, SOLID)
• Familiarity with Domain-Driven Design (DDD)
• Strong knowledge of relational databases (MySQL, PostgreSQL, etc.) and good understanding of non-relational databases (Redis, OpenSearch, or other)
• Practical experience with Docker, docker-compose, and CI/CD pipelines
• Experience writing unit and integration tests

• Intermediate level of English (B1) or above

   

Would be a plus

• Hands-on experience working with Large Language Models (LLMs) - third-party integrations or hosted models, Retrieval-Augmented Generation (RAG) pipelines, LLM Engineering Platforms
• Practical knowledge of cloud infrastructure (AWS or other providers) beyond basic object storage and compute instances

• Familiarity with real-time communication technologies such as WebSockets or WebRTC

   

Responsibilities

• Implement new features following architecture guidelines, review the code of your peers
• Write code following best practices, common design patterns, and Domain-Driven Design ideas
• Integration with 3rd party services (including LLMs, Payment Service Providers, Text-to-Speech, realtime communication and more)
• Debug and fix issues on staging and production environments
• Preparing Swagger schema definitions and implementing automated tests
• Scope decomposition and task estimation
• Participate in daily meetings and other scrum rituals

At Red Rocket Software, we are looking for a highly skilled and proactive Node.js Developer with 3+ years of commercial experience. You will play a key role in designing and building scalable backend systems, taking ownership of technical decisions, and contributing to architecture and product development alongside senior engineers.

What you will do:

• Design, develop, and maintain scalable backend services using Node.js and TypeScript
• Architect and implement robust solutions with NestJS
• Lead backend feature development from technical design to production release
• Design RESTful APIs and ensure high performance and reliability
• Integrate third-party services, external APIs, and complex data flows
• Optimize database queries and ensure data consistency (PostgreSQL / MySQL)
• Participate in architectural discussions and propose improvements
• Conduct code reviews and mentor junior developers
• Ensure backend security best practices and performance optimization
• Collaborate closely with frontend developers, DevOps, QA, and product managers

• Contribute to CI/CD processes and production stability

   

What we expect:

• 3+ years of commercial backend development experience with Node.js
• Strong expertise in JavaScript and TypeScript
• Solid hands-on experience with NestJS in production environments
• Deep understanding of RESTful API design principles, Authentication & authorization (JWT, OAuth, RBAC), Database design and query optimization, Backend architecture patterns
• Experience designing scalable systems and handling production workloads
• Confident use of Git and collaborative workflows
• Experience working with cloud environments (AWS / GCP / Azure)
• Understanding of Docker and CI/CD processes
• English level B2 or higher
• Strong ownership mindset and ability to work independently
• Proactive communication and problem-solving approach

Company is looking for a Senior Backend Engineer to help build the infrastructure that secures the world’s software supply chains. You’ll work closely with top-tier engineers to design and ship high-performance, secure systems at scale.

This role is a great fit for someone who thrives in fast-moving environments, enjoys solving deep technical challenges, and wants their work to have real impact.

    Responsibilities

• Design, build, and maintain scalable backend services and APIs
• Develop reliable, secure, and high-performance systems in a production environment
• Work with SQL and NoSQL databases to support application needs and performance goals
• Collaborate with engineers to design and improve microservices - based architecture
• Contribute to clean, maintainable codebases and strong engineering standards

• Troubleshoot and resolve complex issues across services and infrastructure

   

  Requirements

• Bachelor’s degree in Computer Science or a related field
• 5+ years of backend development experience building scalable applications
• Strong proficiency in Node.js
• Solid experience with SQL and NoSQL databases
• Familiarity with cloud services and microservices architecture
• Excellent problem-solving skills and a commitment to clean, maintainable code

Product that needs your engagement     

Mobion is a cloud-based white-label platform for ride-hailing and corporate transport services. Launched in 2016 by Devart, it supports operators in 6+ countries and has handled over 20 million rides for 4M+ users and 500K drivers.  

Our ecosystem includes rider and driver apps, a real-time dispatch system, admin dashboards, and branded web portals — all backed by a secure, scalable Azure infrastructure. We offer both SaaS and franchise models to help partners grow fast across regions. 

Your future team of professionals     

You will become part of a dynamic Mobion Backend Team, where we value ownership, curiosity, and collaboration. The team consists of three Backend Developers and shares a strong feedback culture and growth mindset — we don’t just build features, we solve real problems. 

Impact you will make  

This role focuses on building scalable, reliable, and high-performance backend solutions for white-label and SaaS platforms. You will be responsible for designing, developing, and maintaining server-side systems, ensuring smooth integration with client applications and third-party services. 

• Implement new technologies and engineering practices to optimize development processes and improve product quality. 
• Define and maintain the overall system architecture, establish design patterns, and ensure technical decisions align with business objectives. 
•  Design, develop, and maintain scalable and secure APIs. 
•  Optimize database queries and improve overall system performance. 
•  Monitor, analyze, and proactively improve system reliability and performance. 
•  Investigate, troubleshoot, and resolve production issues in a timely manner. 
•  Enhance and maintain CI/CD pipelines and deployment processes. 

•  Provide mentorship, technical guidance, and coaching to team members. 

   

Skills we are looking for     

• 5+ years of experience in backend development using Node.js. 
• Experience working with SQL and NoSQL databases, including schema design and query optimization. 
• Solid understanding of API design and hands-on experience with API integration (RESTful services). 
• Experience using version control systems, particularly Git. 
• Familiarity with project management tools, such as Jira or similar. 
• Experience with cloud platforms and application deployment (AWS, GCP, Azure, or equivalents). 

Benefits you get 

• Maintain your work-life balance 

Manage your own working hours with our flexible schedule 

19 days of annual vacation granted on a pro-rata basis 

No overtimes required 

• Hybrid type of cooperation 

Whether you prefer to work remotely in the comfort of your home office or from one of our 4 offices, you can still take part in increasing the world`s awareness about quality Ukrainian products from any part of the world 

• Stay healthy 

Medical insurance from one of the top insurance companies in Ukraine with a wide range of included services, as well as special programs for relatives; and special options for those who live abroad. 

15 working days of sick leave per year — because your health is a priority. 

• Grow with us 

In-house English courses — increase your proficiency through our online courses and speaking clubs with a native speaker 

Online learning activities — workshops, lectures, and webinars to enhance your leadership, management, and self-awareness skills 

Experience exchange — we are proud of our team of professionals who gladly share their deep expertise in all kinds of fields with the rest of the team 

Promotions, rotations, and transitions — when you believe your skills could benefit a different role or team. 

• Stand with Ukraine! 

We have an active pro-Ukrainian position, and that means we help our army, our servicemen, and their families not only through constant donations and volunteering, but also through our military leave policy, special health insurance options, and financial help 

We are a perfect match if you share our values 

We are professionals in our field. 

We know how to turn up our professionalism to the maximum, because we are experts who enjoy solving complex tasks. 

We know how to focus on the product, think big, and at the same time delve deep into the details. 

We create a calm and friendly atmosphere within the company. 

We value the freedom of open and transparent communications. 

Radical honesty is embedded in the foundation of our culture. 

We are open to new things and constantly develop and practice regular knowledge sharing, which helps us evolve continuously. 

Most importantly, the company creates an environment where we can fulfill our potential upon a solid foundation. 

Our Hiring Process 

• Recruitment Interview 
• Technical Interview 
• Management Interview 

• Offer Call 

   

We strive to ensure transparency and openness in the hiring process, and we understand the importance of providing timely feedback. If your resume meets the job requirements, we will contact you to clarify details and schedule an interview within 2 weeks after your application is submitted.  

The timeframe for feedback between interview stages may take up to 2 weeks. 

We are looking for a Middle Backend Developer (Node.js / Go) to join our team and contribute to the development of scalable, high-load backend services. You will work on API design, real-time features, and asynchronous processing, collaborating closely with frontend engineers and product teams to deliver reliable production-grade systems.

Requirements:

• 3+ years of commercial experience in backend development.
• Strong experience with Node.js (NestJS as a plus).
• Experience with Go in production projects.
• Solid understanding of RESTful API design and implementation.
• Experience working with PostgreSQL and/or MongoDB.
• Experience with Redis for caching or transient data handling.
• Understanding of asynchronous processing and event-driven communication.
• Experience building or maintaining high-load backend services.
• Familiarity with Docker and containerized environments.
• Experience working with CI/CD pipelines.
• Understanding of testing principles (unit and integration testing).
• Strong understanding of backend architecture and clean code practices.

Responsibilities:

• Design and implement backend services using Node.js and Go.
• Develop and maintain RESTful and real-time APIs.
• Implement background processing and asynchronous workflows.
• Optimize database queries and improve backend performance.
• Work with caching layers and improve system responsiveness.
• Collaborate with frontend teams to define clean API contracts.
• Participate in refactoring and modernization of existing backend modules.
• Contribute to deployment processes and ensure production stability.

• Participate in code reviews and technical discussions.

   

We offer:

• Competitive salary.
• Remote work format.
• Work on high-load, production-grade international products.
• Salary tied to the dollar exchange rate.
• Opportunity to grow into a Senior Backend or Backend Architect role.
• Influence backend architecture and technical decisions.

Team Lead Full Stack Engineer

High-Load ML AdTech Platform | Real-Time Systems | Remote

🌍 Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

🧩 About the Product:

We build a proprietary ML-driven platform for programmatic user acquisition and retargeting in the mobile app space. It processes tens of terabytes of data daily and handles millions of real-time requests per second with low latency — directly driving client growth and revenue.

Operating at this scale requires strong distributed architecture, performance optimization, and security. Our clients are major app developers who depend on reliable, high-throughput systems and measurable ROI.

🌟 About the Role:

As a Full Stack Team Lead, you will own the design and evolution of our core real-time ad-serving infrastructure. You’ll lead a distributed team of 4 engineers, drive technical direction, and ensure performance, availability, and security at scale.

This is a hands-on role: ~50% coding and architecture, ~50% team leadership, sprint planning, and stakeholder collaboration.

You’ll work closely with the Executive, Product, Data, and Design teams to deliver scalable solutions and shape the product roadmap.

🔥 Why join this product:

• Work on Real High-Load Infrastructure
• Influence Architecture, Not Just Code
• Stay Hands-On While Leading
• ML + Distributed Systems in Production
• Real Ownership & Business Impact

📈 Key Responsibilities:

• Design, implement and operate large-scale, highly available, real-time (low-latency) services using Node.js, TypeScript, React, Redis and Kubernetes on AWS.
• Lead and mentor a team of four distributed engineers; conduct code reviews, design reviews and knowledge-sharing sessions.
• Collaborate with executives, product managers, data scientists and designers to translate requirements into technical solutions.
• Design, develop and integrate RESTful APIs and third-party services.
• Plan, groom and manage agile sprint cycles; track progress and adjust priorities to meet delivery goals.
• Define and enforce security best practices and data protection policies across services.
• Oversee on-call rotation and incident response; maintain low alert rates and rapid recovery processes.
• Manage team operations including onboarding, offboarding, performance reviews and hiring support.

💻 Required Competence and Skills:

• 6+ years of professional experience in backend with Node.js and frontend development (React, Vue or Angular).
• 2+ years in a people-management or team-lead role, with direct experience conducting one-on-ones and performance reviews.
• Proficiency with SQL and NoSQL databases in production environments.
• Experience deploying and operating services on a major cloud platform (AWS, Google Cloud or Azure).
• Deep understanding of the software development lifecycle and agile methodologies.
• Strong problem-solving skills, self-sufficiency and a proactive “can-do” attitude.
• Fluent English communication skills, both written and verbal.

➕ Nice to Have:

• Experience coordinating with offshore development teams.
• Background in web-based SaaS platforms.
• Exposure to large-scale data processing or Big Data technologies.
• Hands-on familiarity with Kubernetes at production scale.

🚀 Why Us:

• We provide 20 days of vacation leave per calendar year (plus official national holidays of the country you are based in).
• We provide full accounting and legal support in all countries where we operate.
• We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.
• We offer a highly competitive package with yearly performance and compensation reviews.

Hello! We are Leaply - an ecosystem of interconnected digital and physical products designed to help people build healthy habits and improve quality of life. We’re building a portfolio of B2C products for global markets, including the US, Tier-1 countries, Europe, and beyond. In June 2024 we launched a new web platform for habit-building with a subscription model and performance-first marketing across Meta, Google, and TikTok.
 

We started as a startup in 2024 and grew 10× in the last six months. In 2025, we’re aiming for another 5×. Demand is validated, and the user flow is steady. Next up: a mobile app that rethinks how habits are formed.
 

At Leaply, we challenge traditional career paths - we value ownership over titles and impact over process. We move fast, think big, and expect everyone to contribute beyond their scope to build the next Ukrainian unicorn.
 

To deliver on this vision, we’re hiring a Growth Monetization Engineer (Node.js) who will act as a founding engineer for our Payments & Operations zone. This is not just about "integration" — you will build the financial backbone of the company that handles 5x growth, ensuring scalability, reliability, and automation across our revenue streams.
 

What you’ll do

— Act as a cross-functional partner: Work directly with Payment, Marketing, and Ops teams to translate business goals into technical solutions that drive revenue;
— Own the Payments Domain: Design and build resilient payment infrastructure (Node.js/NestJS), ensuring transactional integrity, smart retries, and accurate financial data synchronization; 
— Infrastructure & DevOps: Take full ownership of your services' lifecycle — from architectural design to deployment and monitoring in our cloud environment (GCP, Kubernetes, Terraform); — Data & Analytics: Build reliable data pipelines (BigQuery) to empower analytics and ensure every cent is accounted for; 
— Collaborate, don't isolate: While you lead the Payments zone, you’ll work closely with the wider Engineering Chapter, sharing knowledge and building the platform together; 
— (Nice to have) Contribute to simple internal tools or dashboards (React/Next.js) to unblock Ops teams when needed.
 

What matters to us

— 3+ years of commercial experience building scalable web backends; 
— Expert with Node.js (NestJS preferred) and TypeScript; 
— Strong experience with PostgreSQL (transactions, isolation levels) and asynchronous architectures (Queues, Event-driven); 
— Hands-on DevOps experience: You are comfortable setting up CI/CD, configuring Docker, and managing resources in Kubernetes/GCP; 
— Revenue-driven mindset: You understand that "code quality" means "business reliability". You care about metrics like Payment Success Rate as much as CPU Load; 
— Proactive communication: You don't wait for tasks — you identify problems and propose technical solutions to business challenges;
— You use AI in your workflow to move faster and think broader.
 

Bonus points

— Experience in FinTech, E-commerce, or High-load projects; 
— Deep understanding of Payment Processing (Idempotency, Reconciliation, Fraud prevention); 
— Experience with Data Engineering (BigQuery, ETL pipelines); 
— Familiarity with Infrastructure as Code (Terraform); 
— Willingness to occasionally touch Front-end (React) to build internal tools.
 

What you can expect

— Competitive compensation; 
— Founding Engineer Impact: You will be the architect of a critical business zone with high autonomy, but surrounded by a strong engineering ecosystem; 
— No Legacy Bureaucracy: We are young, fast, and you will set the standards for processes and code quality; 
— Strong Community: Regular knowledge-sharing sessions with engineers across Skelar (10+ successful businesses); 
— Office in Warsaw or Kyiv with generator/Starlink, plus perks (lunches, gym, health insurance); 
— A meaningful mission - helping people live better lives, every day.
 

Leaply is backed by SKELAR, a venture builder with 10+ successful B2C businesses in its portfolio. SKELAR provides world-class payment infrastructure for our model, plus financial and legal support across target regions, and runs internal clubs focused on professional growth in marketing, engineering, and payments - there’s always someone to learn from or lean on.
 

Beyond business, SKELAR supports the SKELAR Foundation, a charitable initiative created by employees to support the Ukrainian Armed Forces - funding large projects that bring us closer to victory.

Join us and help build the next big everything!

About Us:

LineUp is a fast-growing IT outsourcing company with 13 years of experience. We are currently looking for a Senior Backend Develope to join a long-term product project.

You will become part of the Smart City ecosystem - a large-scale software product for the Middle East market. This is a fully agile, product-oriented environment with real users and a tangible impact on urban infrastructure.

Key Responsibilities:

• Architect and develop robust backend applications using Node.js and NestJS in a monorepo and microservices environment.
• Design, implement, and manage highly scalable database solutions using PostgreSQL (AWS RDS) and caching strategies with Redis.
• Develop and maintain integrations with various AWS services including SQS, S3, Lambda, IAM, System Manager, EC2, and EKS/ECS for cloud-native applications.
• Manage and optimize containerization and deployment processes with Docker, including building and pushing to registries, and implementing CI/CD pipelines using GitLab runners.
• Implement monitoring and observability using Prometheus and Grafana to ensure system reliability and performance.
• Collaborate with stakeholders to gather business requirements and translate them into technical solutions, driving discussions at the architecture and implementation levels.
• Lead troubleshooting and debugging efforts to resolve complex backend issues and optimize system performance.
• Stay current with the latest technologies and best practices, and promote continuous learning and self-development within the team. Mentor other team members, providing guidance and sharing your knowledge.
• Participate in the agile development process, contributing to scram events, fostering a collaborative and cross-functional team environment.
• Development and maintenance of a high-level engineering culture within the team.

Qualifications:

• Minimum of 5 years of experience in backend development with strong proficiency in Node.js, NestJS, and related technologies.
• Expertise in building and managing microservices architectures and a monorepo setup.
• Extensive experience with PostgreSQL (AWS RDS), Redis, and other backend data storage and caching technologies.
• Strong proficiency in AWS cloud services including but not limited to SQS, S3, Lambda, IAM, EC2, and EKS/ECS.
• Solid understanding of Docker, CI/CD pipelines, and experience with GitLab runners.
• Experience with monitoring tools such as Prometheus and Grafana.
• Proven ability to document backend architectures, designs, and processes clearly and comprehensively.
• Excellent problem-solving skills and attention to detail, with a passion for creating high-quality, performant code.
• Ability to work effectively both independently and as part of a team in an agile environment.
• Strong communication skills with the ability to interact professionally with stakeholders at all levels.
• English at Upper-Intermediate level and above.

What We Offer:

• A collaborative and innovative work environment.
• Professional development opportunities.
• The chance to work on exciting and challenging projects.
• A supportive company culture.