Jobs Node.js

We're looking for a Backend Developer to take ownership of backend systems for our iOS applications — from core API logic to payment infrastructure and subscription flows. 
We process subscription payments through web funnels (webview in iOS apps), so this role requires deep focus on payment systems, subscription logic, and integrations. Direct revenue impact.

What you'll do

• Develop and maintain backend services and APIs for mobile applications (iOS)
• Own backend systems related to payments and subscriptions
• Implement and optimize payment systems (Stripe and similar) 
• Build subscription lifecycle logic — rebilling, dunning, retries, cancellations 
• Work with webhooks and event-driven payment processes 
• Build and support admin panels for subscriptions and content management 
• Integrate third-party services — analytics, payment providers, external APIs 
• Design scalable backend architecture and ensure system reliability
• Work with databases — user data, payments, subscriptions
• Collaborate with product and frontend teams

Requirements

• 4+ years of commercial backend development experience 
• Strong Node.js (TypeScript) 
• REST API development, NestJS preferred 
• Hands-on experience with payment systems (Stripe or similar) 
• Real experience with subscription logic — rebilling, lifecycle, dunning
• Webhooks and async / event-driven patterns 
• Strong experience with SQL databases (PostgreSQL)
• Experience working with Redis (caching / queues)
• Understanding of scalable backend architecture

Nice to have

• Message queues — RabbitMQ / Kafka 
• Admin panels or internal tooling 
• Analytics integrations 
• High-load systems experience 
• Docker, AWS / GCP

We're NOT looking for

• Developers with only basic CRUD/API experience 
• Candidates without hands-on payment system experience 
• Candidates without real subscription logic experience 
• Developers who can't clearly explain their backend decisions

What we offer

• Work on a real product with direct impact on revenue
• Ownership of backend and payment systems
• Remote work and flexible schedule
• Fast product iterations without unnecessary bureaucracy
• Strong product team and engineering culture

  Hi! We are looking for a Node.js Backend Developer (NestJS) to join our pack at SharksCode 🦈💙
SharksCode is a Ukrainian IT company that develops high-tech software solutions and B2B platforms, particularly in the iGaming industry.
  We are looking for a Node.js Backend Developer who will work on building scalable backend services and integrations within a distributed architecture. In this role, you will participate in designing and developing platform services, integrating external systems, and contributing to technical decisions that impact the overall product architecture.

We expect that you:

– Have 4+ years of commercial experience with Node.js development.
– Have 2+ years of experience with NestJS (or are ready to quickly adopt it).
– Have experience developing REST APIs and/or GraphQL using NestJS.
– Have strong proficiency in TypeScript.
– Have hands-on experience with MongoDB, MySQL, or PostgreSQL.
– Have experience integrating third-party APIs/services (e.g., sports feeds, payment gateways, etc.).
– Have experience working with message queues (RabbitMQ, Kafka, or similar).
– Understand distributed systems architecture.
– Have experience using Redis for caching and Pub/Sub (preferable).

Your future responsibilities:

– Design and develop backend services and product functionality.
– Build and maintain integrations with third-party financial and technical services.
– Develop public payment APIs and internal microservices.
– Participate in technical discussions and architecture decisions related to platform development.
– Ensure high code quality and follow engineering best practices.
– Share knowledge and contribute to the development culture within the team.

Nice to have:

– Experience working on high-load projects, especially with live data.
– Experience writing and maintaining automated tests (Unit, Integration, E2E).
– Experience with WebSocket, gRPC, or other real-time technologies.
– Knowledge of architectural patterns: CQRS, Event Sourcing, DDD.
– Experience with Docker, Kubernetes, and CI/CD.
– Experience in igaming/betting industry (optional, but a strong plus).

Interview stages:

🤝 Interview with Recruiter
🧠 Technical Interview
💙 Offer

We offer:

🌴 24 paid vacation days, 14 sick days, and 5 days off
⏰ Flexible start of the working day — from 9:00 to 11:00
🏥 Medical insurance
💰 Bonuses and performance-based rewards
🐶 Office in the center of Kyiv — pets are welcome, we are pet-friendly
💆 Lounge area in the office to recharge during the day
🎾 Padel tennis, football, and training at the polygon for those who enjoy active leisure
📚 Learning compensation, internal meetups and workshops, as well as access to the corporate LMS with courses
🎁 Corporate currency that can be exchanged for merch, gifts, or additional benefits

We are looking for a Founding Engineer to join a fast-growing start-up developing a product for automated lead generation and recruitment outreach.  

Responsibilities: 

- Autonomously architect, prototype, & build the product from the ground up.

- Develop integrations with AI (e.g. Perplexity, OpenAI) & 3rd party API (e.g. CRMs).

- Leverage your prompt engineering skills to maximize the outcome.

- Horizontally work with founders in discussions on business & product topics.

Requirements: 

- 1+ years of experience in a SaaS/startup previously. 

- Senior-level engineer with 5+ years of software development experience. 
- Experience in RAG & AI agents development and prompt engineering.
- API development and integration experience.
- Database design and optimization (SQL).
- Development in cloud infrastructure (AWS/GCP/Azure).
- Patterns for asynchronous task processing (RabbitMQ, SQS, or similar).
- Experience with n8n/make will be a great plus.

- Authentic obsession with giving customers the best.
- Excellent verbal communication skills.

- Excellent English, strong B2 level minimum.

Job details:

• Full-time.
• Fully remote.
• Long-term.
• B2B contract.
• Start date — ideally ASAP / by mid-April.
• Also, you will get founding member equity % in addition to your fixed salary.

What else will you get:

- Learning how a startup grows.

- Direct impact on product and company strategy.

- Deliver value directly to paying B2B clients.

- Opportunity to build and lead a team and department.

- You will work with the most modern toolset (including Cursor in Agent mode).

The hiring process: 

• 45 min pre-screen interview with a recruitment manager
• 15-30 min call with the client
• a technical deep-dive interview, most likely with online coding (conducted by client)
• online call with the team or key team members

About the Project

A leading no-code platform provider from the US has partnered with us to strengthen their development team. This platform enables businesses and individuals to build web and mobile applications without traditional coding, offering a user-friendly drag-and-drop interface.

We help the client to modernise their global solution and enhance it with the new features. Successful candidates will be working alongside the international team.

Required Skills

• minimum 3 years of experience;
• experience with Node.js based web services;
• experience with integration with front-end frameworks (preferably React);
• ability to quickly grasp new technologies;
• ability to communicate with the clients directly;
• English level — Intermediate+ for verbal communication and correspondence with our UK and US clients.

Responsibilities

Within this role the new members will be responsible for:

• analysis and technical decomposition of tasks;
• estimation and planning;
• new features implementation;
• regular code reviews;
• collaboration and knowledge sharing with the team members.

What We Offer

• remote work with a high degree of involvement in teamwork;
• a contract-based employment (B2B);
• work within an organised, independent, and motivated team that adheres to high standards for the quality of software solutions and code;
• opportunities to work on diverse tasks, deepening your experience quickly;
• collaboration in a team that is passionate about their work, and has an open knowledge sharing culture;
• modern project’s infrastructure (including CI/CD pipelines);
• technical support and assistance provided by our internal IT services department.

Expectations

This is what is expected from the successful candidate on this position:

• a minimum of 1 year of commitment; 
• full-time work;
• synced schedule with a team (European time zones);
• participation in regular meetings: daily sync-ups, planning sessions, code review.
   

Recruitment Stages:

• application registration
• technical quiz
• technical interview
• interview with PM of relevant project
• offer

We are looking for a highly skilled Middle Node.js Developer to join our dynamic team! If you’re up for a challenge and enjoy working in a collaborative environment, we’d love to hear from you 🚀

Requirements:
— Experience with:
• JavaScript, Typescript;
• Node.js, Express or Nest.js;
• REST API;
• MySQL or PostgreSQL;
• TypeORM or Sequelize;
• Docker;
• Basics of Linux;
— Confident written and spoken English (B2 level or above);
— Effective communication and collaboration skills;
— Critical thinking and accountability;
— Excellent time management skills and ability to adapt to a fast-paced work environment;
— Bachelor’s or Master’s degree in a technical field.

Would be a plus:
— Experience with:
• RabbitMQ;
• MongoDB;
• Websocket, SocketIO;
• AWS, Azure, or GCP;
• Test frameworks;
— Strong understanding and hands-on experience with front-end technologies and architecture;
— Ability to find creative solutions to complex architectural or coding issues.

We offer:
• Transparent financial motivation;
• Remote workplace or a comfortable office in the center of Kyiv;
• 18 working days of paid leave annually;
• Unlimited sick days;
• Salary review twice a year;
• Compensation for our English-speaking club — 100%;
• Compensation for any AI tool of your choice — 100%;
• Compensation for coworking spaces — 100%;
• Compensation for gym memberships and professional courses — 50% (after the trial period);
• Compensation for any English courses — 50% (after the trial period);
• Compensation for sessions with a psychologist — 50% (after the trial period);
• Medical insurance (after the trial period).

Interview Stages:
Screening Interview ➡️ Technical Interview ➡️ Job Offer

 

If you have the skills, passion, and determination we’re looking for, apply now to become part of our exciting journey! ⭐

About us

An online casino powered by the SoftSwiss platform. The front-end is React-based and integrated with the SoftSwiss game aggregator, cashier module, and player registration. After a redesign, we need skilled developers to take over the project, stabilize it, and later contribute to additional web projects.

We are hiring two part-time/full-time engineers so the system is never dependent on a single person. Both will be cross-trained on the casino platform.

What you’ll do

• Take ownership of the existing React site.
• Audit the codebase, APIs, and deployment.
• Fix critical issues in registration, cashier, and game launch flows.
• Improve security, testing, and monitoring.
• Deliver technical documentation and handover materials.

• Participate in other ongoing projects after the takeover phase.

   

Tech stack & integrations

• Frontend: React (TypeScript)
• Backend: Node.js / Express (Nest.js a plus)
• APIs: SoftSwiss Game Aggregator, Cashier module, Registration/Auth
• DB: PostgreSQL (other SQL is fine)
• Infra: Docker, CI/CD pipelines, cloud hosting

• iGaming integration experience is a PLUS

   

Requirements

• 3+ years as a full-stack developer.
• Strong React + TypeScript skills.
• Solid Node.js backend experience.
• Hands-on experience with third-party API integrations in iGaming is a must.
• Good understanding of authentication, sessions, and secure coding practices.
• Independent and reliable: able to audit, fix, and deliver without supervision.

• English: Upper-Intermediate (enough for tech documentation and communication).

   

We offer

• Remote work on European time zone.
• Competitive salary.
• Dinamic environment.
• Contractor (B2B/freelance) or long-term agreement.
• Initial project: stabilize & document the casino site.

• Ongoing work: participation in new web projects.

   

How to apply

Please send:

• A short intro with relevant experience.
• Links to projects, GitHub, or portfolio (iGaming/fintech/payments experience is a big plus).
• Availability (part-time / hours per week).

We're looking for a Full Stack Web Engineer who thrives at the intersection of AI Agentic Development.

About the Project

This project is part of a broader initiative to leverage AI tooling to deliver simple-to-medium complexity applications quickly and cost-effectively, with plans to replicate this model across multiple verticals, including spas, medical offices, dental clinics, golf lessons, and more. 

In this role, you will work closely with product engineering team to help set up and optimize AI tools that support development and contribute directly to building and shipping the product.

Your Responsibilities:

• Designing and building a merchant-facing appointment scheduling app from the ground up.
• Write clean, scalable, and maintainable code while ensuring proper testing, deployment, and monitoring.
• Continuously improve code quality through regular refactoring, debugging, and performance enhancements.
• Participate in an on-call rotation to handle critical incidents and maintain system uptime.

Qualifications:

• Solid experience with React, Node.js, and PostgreSQL (6+ years)
• Hands-on experience with LLM tools and APIs, such as Anthropic (Claude)
• Experience integrating AI into real production systems
• Experience building AI-powered workflows or toolchains for developers
• Security is at the forefront of your mind in everything that you do.

Why join us?

• ️Our people matter, work-life balance is important at VARTEQ
• Fast-learning environment, entrepreneurial and strong team spirit
• Competitive salary package 

We are looking for a Founding Engineer to join a fast-growing start-up developing a product for automated lead generation and recruitment outreach.  

Responsibilities: 

- Autonomously architect, prototype, & build the product from the ground up.

- Develop integrations with AI (e.g. Perplexity, OpenAI) & 3rd party API (e.g. CRMs).

- Leverage your prompt engineering skills to maximize the outcome.

- Horizontally work with founders in discussions on business & product topics.

Requirements: 

- 1+ years of experience in a SaaS/startup previously. 

- Senior-level engineer with 5+ years of software development experience. 
- Experience in RAG & AI agents development and prompt engineering.
- API development and integration experience.
- Database design and optimization (SQL).
- Development in cloud infrastructure (AWS/GCP/Azure).
- Patterns for asynchronous task processing (RabbitMQ, SQS, or similar).
- Experience with n8n/make will be a great plus.

- Authentic obsession with giving customers the best.
- Excellent verbal communication skills.

- Excellent English, strong B2 level minimum.

Job details:

• Full-time.
• Fully remote.
• Long-term.
• B2B contract.
• Start date — ideally ASAP / by mid-April.
• Also, you will get founding member equity % in addition to your fixed salary.

What else will you get:

- Learning how a startup grows.

- Direct impact on product and company strategy.

- Deliver value directly to paying B2B clients.

- Opportunity to build and lead a team and department.

- You will work with the most modern toolset (including Cursor in Agent mode).

The hiring process: 

• 45 min pre-screen interview with a recruitment manager
• 15-30 min call with the client
• a technical deep-dive interview, most likely with online coding (conducted by client)
• online call with the team or key team members

We are looking for a  Node.js Developer (Blockchain Project).

We are building a next-generation ecosystem with a blockchain as its foundation, a non-custodial wallet, and a stablecoin protocol. After a successful demo, the project is now preparing the core components (blockchain + stablecoin) for launch. In parallel, development has started on additional secured projects, including:

• A document management system,
• A country-specific solution,
• An e-invoicing platform,
• And several other ecosystem modules ready to begin.

Tech Stack

• Node.js / TypeScript, NestJS
• PostgreSQL, Redis / Valkey
• L2 blockchain (interaction with other networks)
• Docker, Kubernetes (bare-metal & cloud infrastructure)

Responsibilities

• Write efficient, maintainable code;
• Design and implement independent, self-sufficient components efficiently;
• Participate in architectural discussions and technical decision-making;
• Identify potential technical risks and develop mitigation strategies;
• Ensure effective knowledge sharing and maintenance within the team;
• Foster a collaborative and innovative development environment;
• Perform cross code reviews with team members;
• Properly maintain documentation.

Requirements

• 3+ years of experience with server-side JS/TS;
• Solid understanding of TypeScript and JavaScript fundamentals and internals;
• Experience with Express, NestJS, or similar frameworks;
• Strong understanding of asynchronous programming, event-driven architecture, and non-blocking I/O;
• Understanding of different types of scaling and microservice architectures in various implementations;
• Hands-on experience with Web3.js or Ethers.js for interacting with Ethereum or other EVM-compatible networks;
• Understanding of smart contracts;
• Familiarity with popular blockchains such as Ethereum, Binance Smart Chain, or Layer 2 solutions;
• Expertise in data structures, algorithms, and software design patterns;
• Solid understanding of software architectural patterns;
• Experience with relational databases (especially PostgreSQL);
• Deep experience with SQL (including schema/query design and optimization);
• Experience with ORMs;
• Familiarity with Docker, containerization, and orchestration tools;
• Strong analytical and problem-solving skills;
• Proficiency in writing unit, integration, and end-to-end tests;
• Conversational English.

Will be a plus

• Familiarity with DevOps practices and Infrastructure-as-Code (IaC) tools;
• Understanding of consensus algorithms, cryptographic principles, and decentralized applications (dApps);
• Familiarity with Matter Labs’ zk stack;
• Experience in the FinTech domain;
• Understanding of different rollup technologies;
• Openness to technology stack changes and adaptability.

We offer:

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

We are hiring a Senior Full Stack Developer for an Israeli deep tech company building a cloud-native platform for monitoring critical infrastructure at scale. The product helps utilities, energy companies, and infrastructure operators detect threats, anomalies, and operational events in real time across thousands of kilometers of pipelines, power lines, railways, and perimeter assets.

The platform processes continuous streams of acoustic sensor data from distributed fiber optic networks, runs machine learning classification on top of it, and delivers actionable alerts through a smart command and control interface. It integrates with SCADA systems, Digital Twins, and other enterprise control environments. The frontend is the primary window into all of this - maps, dashboards, real-time alerts, and operational workflows that field teams and enterprise clients rely on daily.

The system is cloud-native, built around Next.js and NestJS in TypeScript, running on AWS with Kubernetes and Docker. The product is live, used by real enterprise customers across multiple industries and geographies, and continues to grow in scope and scale.

In this role you will work across the full stack, owning features end-to-end from architecture through production. You will collaborate closely with product, R&D, and domain experts to build interfaces and services that make complex sensor data understandable and actionable.

Responsibilities

- Design and implement scalable, high-performance web applications end-to-end

- Architect backend services and APIs using NestJS

- Build modern, responsive frontend applications with Next.js

- Leverage modern AI tools and workflows to increase development velocity and code quality

- Be part of complex technical discussions with the ability to contribute a major part to the discussion and decisions

- Own features from concept to production

- Optimize performance, reliability, and security across the stack

- Mentor developers and promote engineering best practices

Tech Stack

- Full stack: Next.js, NestJS (TypeScript)

- System design: Chakra UI

- Infrastructure: Kubernetes, Docker, CI/CD pipelines

- Database: SQL / NoSQL (depending on service)

- Cloud: AWS (Lambda, ECS/EKS, S3, RDS, etc.)

Requirements

- 5+ years of experience as a Full Stack Developer

- Proven experience with relevant technologies and frameworks

- Strong understanding of system design (experience with Chakra UI is an advantage), scalability, and cloud architecture

- Solid experience working with AWS in production environments

- Fluent in English and strong communication skills

- Experience working in startup or fast-paced environments

- Strong problem-solving skills and ownership mindset

- Hands-on experience with Docker and Kubernetes

AI & Modern Engineering Expectations

Candidates must be proficient and up to date with the latest AI advancements, actively using AI-powered development tools (like Claude Code, Code Rabbit, or similar) to accelerate development, enhance code quality, and innovate product features where AI adds user value.

Nice to Have

- Experience designing and developing microservices architecture

- Experience with Python and Dash

- Background in performance optimization and distributed systems

This is a long-term opportunity to work on a technically serious product with real enterprise customers, meaningful infrastructure scale, and strong engineering culture in one of Israel's most awarded deep tech companies.

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.
• Embrace and operate within a T-shaped approach, being ready to extend expertise beyond backend tasks to ensure end-to-end delivery of features.
• 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.
• Knowledge or experience in Frontend development (specifically Next.js) is a significant plus.
• Knowledge or experience with automated tests (integration, E2E) is a significant plus.
• Willingness and mindset to work in a T-shaped model, contributing to various stages of the development lifecycle.
• 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.

LineUp is a fast-growing IT outsourcing company with 13 years of experience. We are currently looking for a Middle 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:

• Develop and maintain robust backend applications using Node.js and NestJS in a monorepo and microservices environment.
• Embrace and operate within a T-shaped approach, being ready to extend expertise beyond backend tasks to ensure end-to-end delivery of features.
• Work with PostgreSQL (AWS RDS) and Redis to design, implement, and optimize database and caching solutions.
• Develop and maintain integrations with various AWS services including SQS, S3, Lambda, IAM, System Manager, EC2, and EKS/ECS for cloud-native applications.
• Contribute to containerization and deployment processes using Docker, including building images and pushing to registries, implementing and maintaining CI/CD pipelines using GitLab runners.
• Implement and configure monitoring and observability using Prometheus and Grafana to ensure system health and performance.
• Collaborate closely with stakeholders and other developers to understand business requirements, translate them into high-quality technical solutions that meet those needs.
• Troubleshoot and debug backend issues, optimizing code to enhance performance and maintainability.
• Participate in the agile development process, contributing to scram events, fostering a collaborative and cross-functional team environment.
• 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.

Qualifications:

• Minimum of 2 years of experience in backend development with a focus on Node.js, NestJS, and related technologies.
• Knowledge or experience in Frontend development (specifically Next.js) is a significant plus.
• Knowledge or experience with automated tests (integration, E2E) is a significant plus.
• Willingness and mindset to work in a T-shaped model, contributing to various stages of the development lifecycle.
• Familiarity with microservices architectures and monorepo environments.
• Experience with PostgreSQL (AWS RDS), Redis, and backend data management.
• Knowledge of AWS services including SQS, S3, Lambda, IAM, EC2, and EKS/ECS.
• Understanding of Docker and CI/CD pipelines, with some experience using GitLab runners.
• Familiarity with monitoring tools such as Prometheus and Grafana.
• Ability to document backend designs and processes clearly.
• Strong problem-solving skills and attention to detail, with a drive to create high-quality, performant code.
• Ability to work both independently and as part of a team in an agile environment.
• Good communication skills, with the ability to interact professionally with team members and stakeholders.
• English at Upper-Intermediate level and above.

What We Offer:

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

Build tools that redefine how business works. We are a fresh and ambitious AI studio creating meaningful, in-house products that combine human empathy with cutting-edge technology. We are expanding our footprint into the B2B AI SaaS sector, developing intelligent platforms designed to enhance productivity and automate complex business processes.

Role Description

We are looking for a versatile and experienced Next.js Developer to join our passionate, fast-moving team. If you are excited by the challenge of transforming complex business needs into elegant, high-performance, and scalable web applications, we want to hear from you.

What you'll do:

• Develop and maintain high-performance web applications using Next.js (App Router).
• Design sophisticated user interfaces (Dashboards, Data Visualization) with a focus on UX, performance, and accessibility.
• Integrate AI-driven features (chatbots, content generation, data insights) via RESTful and GraphQL APIs.
• Optimize application performance using SSR, ISR, and Server Components to ensure a seamless user experience.
• Use modern state management and data-fetching tools like Zustand and TanStack Query.
• Leverage AI coding assistants (Cursor, GitHub Copilot) to streamline development cycles and increase productivity.
• Collaborate closely with designers and backend developers to build cohesive B2B solutions.

Qualifications:

• 3+ years of professional experience with React and Next.js.
• Strong knowledge of TypeScript and modern JavaScript (ES6+).
• Proven experience in building scalable SaaS architectures and implementing server-side rendering.
• Proficiency with modern CSS frameworks (Tailwind CSS) and responsive UI components.
• Comfortable working with REST APIs, modern development tools (Git, npm/yarn), and CI/CD pipelines.
• Active interest in AI-assisted development and experience with AI coding tools.
• Strong problem-solving skills and the ability to work effectively in a remote-first environment.

What we offer:

• Full-time remote position with a flexible schedule.
• Salary from $2500 to $3500 depending on the results of the interview.
• Work on meaningful B2B AI-powered products that solve real-world business challenges.
• A culture of wellness, clarity, and purpose—we move fast, but with intention.
• A small, values-driven team where your contributions have a lasting impact.

Backend Engineer (Location-Based Mobile Game / AR)

About the Project
 

We are building a location-based mobile game where users purchase keys to hunt and open real-world chests using their phone camera.

Each chest can be opened only once globally, which makes backend logic, geo-queries, and data integrity critical.

This is an early-stage MVP with clear scope, fast decisions, and direct access to the product owner.

Responsibilities

• Design and implement backend architecture for the MVP
• Build REST APIs for:
   
  • user profiles & authentication
  • keys inventory & balance
  • geo-based chest discovery
  • chest opening (atomic, server-authoritative)
  • town-based statistics & leaderboard
     
• Design PostgreSQL schema with geospatial queries (PostGIS)
• Implement anti-cheat logic:
   
  • distance validation
  • speed / teleport detection
  • race-condition protection (two users opening same chest)
     
• Integrate Apple / Google sign-in
• Support in-app purchase receipt validation (keys)
• Work closely with Unity developer to define clean API contracts
   

Technical Requirements (Must Have)

• 4+ years of backend development experience
• Strong knowledge of PostgreSQL
• Experience designing REST APIs
• Understanding of transactional systems & data consistency
• Experience with Node.js (NestJS) or Go
• Familiarity with authentication flows (OAuth)
• Ability to work independently and make technical decisions
   

Nice to Have

• Experience with PostGIS or geo-based queries
• Experience with mobile games or high-concurrency systems
• Understanding of anti-fraud / anti-cheat patterns
• Experience with cloud deployment (AWS / GCP / similar)

What This Is NOT

• This is not a large corporate project
• No heavy bureaucracy
• No 10-layer approval process
• You will not “just implement tickets” — you will shape the system
   

Engagement Format

• Full-time preferred
• Remote
• Direct communication with founder / product owner

About the role:

We’re building a modern multi-tenant SaaS platform with a strict TypeScript monorepo (frontend + backend).

Looking for a Senior Full-Stack Developer to work on new features, integrations, and performance improvements.

Tech stack:

• TypeScript (strict, no JS)
• React (hooks, context, custom state)
• Node.js (Express 5)
• PostgreSQL (Neon) + Drizzle ORM
• Vite, Tailwind CSS

What you’ll do:

• Develop and improve product features
• Work across frontend and backend
• Build and maintain integrations (payments, maps, AI)
• Optimize performance and scalability

• Keep a clean and strongly-typed codebase

   

Requirements:

• 4+ years of experience with JavaScript/TypeScript
• Strong experience with React
• Solid Node.js + REST API design
• Good SQL / PostgreSQL knowledge
• Experience with modern tooling (Git, Vite, etc.)

Nice to have:

• Stripe or SaaS billing systems
• Google Maps API / geospatial data
• Experience with OpenAI or Gemini
• Mailgun / Twilio integrations
   

Product highlights:

• RBAC & subscription-based access
• Integrations: Stripe, Google Maps, AI services
• Digital signature workflows