Jobs Node.js

Project about building the payments infrastructure that merchants have been waiting for. A single integration, intelligent routing, and the kind of reliability that lets businesses stop thinking about payments and get back to running their business.
The platform is real, the merchants are real, and the problems are hard. We're integrating multiple payment providers, routing transactions intelligently across them, and doing it in a way that's secure, scalable, and maintainable.

Core Development
● You build the services that make payments move. Sessions, routing, provider adapters, webhooks; you work across the core of the platform, end-to-end, from database schema through to deployment.
● You integrate payment providers properly. Clean adapter patterns, consistent error handling, and abstractions that make the tenth integration as maintainable as the firstYou write code that handles real money. That means understanding the failure modes, thinking about idempotency, and never cutting corners on correctness because correctness is the product.
● You contribute to architecture, not just implementation. You raise design concerns early, engage in technical decisions, and leave things better than you found them.

Quality & Performance
● You test what you build. Unit tests, integration tests, E2E tests, and an understanding of what each is actually for. You don't hand things to QA hoping for the best.
● You debug with rigour. When something goes wrong in production, you trace it, understand it, and fix the root cause, not just the symptom.
● You review code seriously. You give feedback that improves the codebase, and you take feedback the same way. Collaboration
● You work closely with the Tech Lead. You implement architectural decisions together and contribute meaningfully to technical design conversations.
● You engage with the product function. You take time to understand what you're building and why. Acceptance criteria exist to be understood.
● You show up to Agile ceremonies and contribute to them. Standups, sprint planning, retros; they only work if people engage honestly.
● You support the team across deployment, observability, and incident response. Shipping doesn't end at the PR merge.

How You’ll Be Successful
● What you ship works, and keeps working. Test coverage is real, regressions are rare, and you're not the source of production surprises.
● Provider integrations are clean and maintainable. The team can extend them without unpicking your decisions six months later.
● You raise concerns before they become problems. Whether it's a design risk, dependency, or edge case, you flag it early with context for the team to act.
● Your code reviews make the codebase better. Not just caught bugs, but clearer thinking, better abstractions, and a higher collective bar.
● The team trusts you across time zones. Async communication is clear, commitments are kept, and you don't go quiet when things get complicated.

Description:

We are hiring a strong senior engineer for a production-grade AI Operations Platform (real infrastructure, not wrappers), as a dedicated full-time engineer.

You will own architecture and delivery end-to-end: clean NestJS backends with real separation of concerns, MongoDB modeled and indexed around actual access patterns, and a Next.js / React front. This is architecture-first work where structure and data modeling are the difference between scaling and rewriting.

Small team, real infrastructure, end-to-end ownership.

Must-have (mandatory):

• Expert NestJS / Node.js (6+ years backend)
• Strong MongoDB (modeling, indexing)
• Next.js / React on the front
• Deep on system design, database design, and design patterns (the interview goes deep here)
• Clean-architecture mindset, real ownership
• Comfortable with AI-assisted dev tools (Cursor / Copilot)
• Strong English, comfortable leading daily technical calls

Nice-to-have:

• AI/ML or AI-agent production experience (not required)
• Cloud / DevOps basics (CI/CD, deployments)

Conditions:

• Full-time, dedicated to ONE client (no parallel projects), long-term
• Virtual-office model: team stays in a shared Google Meet during work hours, cameras and mics off by default, on only when needed. Not monitoring, just ambient presence; free breaks
• Timezone: comfortable overlap with GMT+2/+3 (client in Israel)

We are looking for a skilled Backend Developer (Node.js/NestJS) to join our high-performance engineering team.
In this role, you will build scalable microservices, work with modern event-driven architecture, and contribute to the development of large, high-load systems used by thousands of users daily.

Responsibilities:
• Design, develop, and maintain high-load backend services using Node.js (NestJS).
• Build and optimize microservices architecture for scalability and resilience.
• Work with PostgreSQL (TypeORM), MongoDB (Mongoose), ClickHouse, and Redis.
• Implement efficient communication between services using gRPC.
• Integrate and work with Kafka and other message-driven components.
• Ensure proper implementation of caching, queues, and distributed operations.
• Apply secure coding principles and follow best practices.
• Analyze business requirements, identify issues, and provide timely fixes and improvements.
• Collaborate closely with cross-functional teams during planning and development.
 
Required Skills:
• 2+ years of experience with Node.js, strong expertise in NestJS.
• Solid experience with:
PostgreSQL + TypeORM
MongoDB + Mongoose
Redis
ClickHouse (queries, schema design, optimization)
• Hands-on experience with Kafka and event-driven architecture.
• Experience with gRPC.
• Understanding of microservices and distributed system design.
• Experience with API services, WebSockets, and async communication patterns.
• Strong knowledge of JavaScript/TypeScript (ES6+).
• Understanding of HTTP/HTTPS, web protocols, and backend performance principles.
• Strong analytical and debugging skills — ability to identify defects and deliver hotfixes quickly.
 
Nice to have:
• Hands-on knowledge of any other OOP language (preferably Java).
• Architecture patterns knowledge and usage.
• Experience with CI/CD pipelines and DevOps practices.
• Knowledge of security standards and best practices for backend systems.
• Experience in iGaming, fintech, or other high-load domains.
 
What We Offer:
• Competitive salary. 
• Fully remote work with flexible schedule. 
• Career growth in an international iGaming company. 
• Paid vacation and sick leave.
 
If you are passionate about clean architecture, enjoy solving complex technical challenges, and want to grow in a product-driven environment — this role is for you.

Project description

As a Backend Developer for this project, you will have the opportunity to contribute to industry leading software for our global clients. You will work closely with cross-functional teams and regional experts to design, implement, and support solutions. This is your chance to work on a stable, long-term project with a global client, focusing on digital transformation and change management.

We are looking for a Mid-Level Backend Developer with solid expertise in Node.js, RESTful API design, and cloud-native development. The ideal candidate will have hands-on experience building scalable, secure, and high-performance backend services deployed on AWS and Azure using Kubernetes. You will work closely with cross-functional teams to design, build, and maintain backend systems that power our applications.

Why Join Us?
- Exciting Opportunities: Work in squads under our customer's direction, utilizing Agile methodologies and Scrum.
- Innovative Application: Contribute to an application that guides and documents the sales order process, aids in market analysis, and ensures competitive pricing.
- Workflow Governance: Be part of a team that integrates digital and human approvals, ensuring seamless integration with a broader ecosystem of applications.
- Global Exposure: Collaborate with reputed global clients, delivering top-notch solutions.
- Career Growth: Join high-caliber project teams with front-end, back-end, and database developers, offering ample opportunities to learn, grow, and advance your career.

If you have strong technical skills, effective communication abilities, and a commitment to quality, we want you on our team!

Ready to make an impact? Apply now and be part of our journey to success!

Responsibilities

Design, develop, and maintain backend services and RESTful APIs using Node.js

Build and deploy containerized applications on Kubernetes across AWS and Azure environments

Collaborate with frontend, DevOps, and platform teams to define and deliver features

Implement and maintain CI/CD pipelines for automated build, test, and deployment

Ensure API performance, reliability, and security through proper design and monitoring

Manage and optimize cloud resources across AWS and Azure

Write and maintain unit, integration, and API tests to ensure code quality

Participate in code reviews, technical discussions, and architecture decisions

Troubleshoot production issues and contribute to incident resolution

Stay current with emerging technologies in backend development, cloud services, and container orchestration

Skills

Must have

Years of Experience:

4-6 years in backend application development, with at least 1-2 years working with cloud services and container orchestration.

Backend Development

Strong proficiency in Node.js (Express, Fastify, or NestJS)

Deep understanding of RESTful API design, versioning, and best practices

Experience with API authentication and authorization (OAuth2, JWT, API keys)

Proficiency in JavaScript and TypeScript

Understanding of event-driven architecture and message queues (e.g., RabbitMQ, Kafka, SQS)

Cloud Services

Hands-on experience with AWS (EC2, S3, Lambda, SQS, SNS, IAM, CloudWatch)

Working knowledge of Azure (App Service, Azure Functions, Azure DevOps, AKS)

Understanding of cloud networking, security groups, IAM policies, and secret management

Container Orchestration

Proficiency in Docker — building, optimizing, and managing container images

Hands-on experience with Kubernetes (K8s) — deployments, services, config maps, secrets, ingress, helm charts

Experience with managed Kubernetes services (EKS, AKS)

DevOps

Experience with CI/CD pipelines using GitLab CI, GitHub Actions, Jenkins, or Azure DevOps

Familiarity with Infrastructure as Code (IaC) tools such as Terraform or Helm

Nice to have

Database Management

Experience with SQL databases (PostgreSQL, MySQL) and NoSQL databases (MongoDB, DynamoDB, Redis)

Understanding of database optimization, indexing, and query performance tuning

Observability and Monitoring

Familiarity with logging and monitoring tools (CloudWatch, Prometheus, Grafana, ELK stack)

Experience with distributed tracing (Jaeger, OpenTelemetry)

Security

Understanding of API security best practices (rate limiting, input validation, CORS, HTTPS enforcement)

Familiarity with container security scanning and vulnerability management

Testing

Experience with automated testing frameworks (Jest, Mocha, Supertest)

Understanding of integration and contract testing for APIs

Soft Skills

Strong problem-solving abilities and attention to detail

Good communication and collaboration skills

Comfortable working in an agile development environment

Languages

English: C1

About the Role

We are looking for an experienced Node.js / Python Developer to join us long-term and take ownership of a production WhatsApp automation platform used by real customers.

You will work on two interconnected systems:

• A multi-account WhatsApp messaging platform with scheduling, personalization, real-time monitoring, and campaign management.
• A device automation platform that manages Android emulators, account lifecycle, automation flows, and integrations.

This is a long-term role focused on product development, system reliability, and building new features.

Responsibilities

• Develop and maintain production Node.js and Python applications.
• Implement new features based on business requirements.
• Improve system stability, performance, and scalability.
• Optimize APIs, databases, and real-time communication.
• Extend automation workflows and plugin functionality.
• Maintain and improve the frontend where needed.
• Work with an existing codebase and contribute to its long-term evolution.

Requirements

• Strong commercial experience with Node.js.
• Strong commercial experience with Python.
• Experience with Express.js and FastAPI.
• Solid understanding of REST APIs and WebSockets.
• Experience with asynchronous programming and concurrent systems.
• Good knowledge of SQLite or similar relational databases.
• Strong JavaScript fundamentals (Vanilla JS).
• Basic PHP knowledge for maintaining existing functionality.
• Ability to work independently on production systems.

Nice to Have

• Experience with WhatsApp automation (Baileys or similar).
• Android / ADB knowledge.
• Experience with PyQt or desktop applications.
• Experience designing plugin or extension architectures.
• Knowledge of rate limiting, anti-detection, or automation systems.

We Offer

• Long-term collaboration.
• Existing production product with active users.
• Full onboarding and documentation.
• Opportunity to take ownership of a technically challenging platform.
• Flexible remote work.

Ready to shape the future of logistics technology? We are looking for a Middle/Senior Full Stack Developer to join our distributed team and help build a next-generation e-commerce fulfillment platform. This role offers remote flexibility with the option to work from Kraków, Poland. 

At Sigma Software, we partner with some of Europe’s most innovative companies, delivering solutions that combine cutting-edge technology with business impact. You will work in a collaborative Agile environment, leveraging modern frameworks and AI-assisted tools to create high-performance solutions. 

Why join us? You’ll be part of a long-term partnership, working on high-impact projects with access to advanced AI tools, cloud technologies, and a supportive team culture. 

CUSTOMER 

Our customer is one of Europe’s leading logistics providers, headquartered in Germany. Specializing in integrated supply chain systems and data-driven logistics optimization, they operate across multiple European markets, offering advanced warehousing, transportation, and fulfillment services. Sigma Software has been collaborating with them since 2017, delivering over 10 active projects that drive innovation and efficiency. 

PROJECT

You will contribute to the development of a next-generation e-commerce fulfillment platform designed to automate and optimize order processing, inventory management, and delivery tracking. The solution leverages modern web technologies and AI-assisted development tools to ensure scalability and efficiency. This is a chance to work on a high-impact product in a collaborative, Agile environment. 

Job Description

• Design, develop, and maintain robust software applications using TypeScript/JavaScript, Node.js, NestJS, and React.js 
• Implement new functionality from scratch, including role-based access control services, API integration services, and custom endpoints 
• Work in an AI-augmented development environment, leveraging tools like Claude Code, Cursor, and Microsoft Copilot 
• Collaborate closely with stakeholders to define, design, and deliver new features 
• Ensure code quality, security, and performance through critical evaluation of AI-generated outputs 
• Participate in SCRUM ceremonies and contribute to team planning, estimation, and retrospectives 

Qualifications

• 3+ years of commercial development experience with a focus on TypeScript/JavaScript 
• Proven expertise in Node.js, NestJS, React.js, Next.js, and REST API development 
• Experience with AI-assisted coding tools (Claude Code, Cursor, Microsoft Copilot, or similar) 
• Ability to write clear prompts for code generation and refactoring 
• Skills in evaluating AI-generated code for security and performance implications 
• Experience translating AI-generated specifications into implementation tasks 
• Proficiency in debugging and validating AI-generated code 
• Familiarity with AI-driven development frameworks (BMAD, Superpowers, GSD, spec-kit, or equivalent) 
• Experience with any cloud provider (preferably Azure) 
• Experience working in SCRUM teams 
• Fluent English 

WILL BE A PLUS

• Experience integrating and working with design systems (Tailwind, Storybook) 
• Proven experience with AI-augmented development (pet projects, certifications) 
• Participation in AI-assisted requirements breakdown and task decomposition using frameworks like spec-kit or BMAD 

PERSONAL PROFILE

• Strong communication, multitasking, and problem-solving skills 
• Analytical thinking and sound technical judgment 
• Quick grasp of existing digital products and architectures 

Backend Developer 

Quintagroup is looking for a Backend Developer to join a European company working in solar energy and IoT. You'll build backend systems for a range of products from dashboards that visualize live sensor data (moving sensors and panels that rotate based on weather conditions and time of day) to sales platforms for solar panels. You'll work with real-world IoT data and an international team, with room to own features end to end.

Technology stack: Node.js + Python.

RESPONSIBILITIES:

• Develop and maintain backend services with Node.js and Python
• Build and integrate APIs that process data from IoT sensors and devices
• Support data visualization dashboards with reliable backend logic
• Write robust, tested, production-grade code

• Collaborate with an international development team

   

REQUIREMENTS

• Commercial experience as a Node.js backend developer
• Working knowledge of Python
• Experience building and integrating REST APIs
• Comfortable working with databases

• English — B2+ ( spoken and written)

   

Nice to have: experience with IoT / sensor data, real-time data processing, cloud platforms (AWS).

WE OFFER:

• Flexible working format: fully remote, hybrid, or office-based.
• Medical insurance.
• Competitive salary and compensation package.
• Access to professional development tools, including tech talks and training sessions.
• Education reimbursement for relevant certifications or courses.

• Engaging team-building activities and location-specific perks.

   

Full Remote · EU · 4+ years of experience · English – C1 · Igaming/gambling Founding Engineering Team

Role Overview:
You will be our first dedicated back-end engineer. For the first phase, the back end is you — working directly with founders  and one front-end engineer.
We are looking for an experienced Senior Back-End Developer with strong proficiency in TypeScript and deep expertise in Node.js and NestJS. You will design the core services of the platform from a small existing foundation, and the decisions you make in the first six months are the ones every future engineer will inherit. We value judgement and pragmatism in equal measure: knowing which problems deserve a proper solution now, and which deserve a note in the backlog.

Key Responsibilities:
Owning the back-end end to end — architecture, implementation, deployment and the pager;
Designing, building and maintaining services and APIs in NestJS and TypeScript, with stable contracts and careful versioning;
Modelling data and evolving production schemas without downtime — migrations, backfills and safe rollout strategies;
Guaranteeing correctness and isolation in a multi-tenant context: authentication, authorisation, quotas and rate limiting;
Building asynchronous communication between services (queues, events, background jobs) with idempotency and failure recovery in mind;
Instrumenting what you build: structured logging, metrics, tracing and alerts that mean something;
Diagnosing and resolving performance issues — slow queries, N+1 patterns, contention, memory leaks — using data rather than intuition;
Writing and maintaining tests at unit, integration and contract level; establishing the standard rather than following one;
Setting the engineering practices — code review, CI, release process — that the next engineers we hire will work inside;
Working directly with the founders on scope and trade-offs, and pushing back when the schedule and the architecture disagree.

Required Skills & Experience:

The ideal candidate will have 4+ years of back-end experience and demonstrate proficiency in:

• Strong command of JavaScript fundamentals and extensive production experience with TypeScript;
• Solid understanding of design patterns, dependency injection and modular architecture;
• Proficiency with NestJS, or with an equivalent framework (Spring, .NET) plus a genuine interest in working in NestJS;
• Relational databases (PostgreSQL or similar): data modelling, indexing, execution plans, transactions and isolation levels;
• ORMs such as TypeORM, Prisma or MikroORM — along with an awareness of their limits and the confidence to write SQL when needed;
• REST API design, including pagination, versioning, error handling and backward compatibility;
• Unit and integration testing frameworks (e.g. Jest, Supertest);
  Professional-level proficiency with Git, including branching strategies and collaborative workflows;
• Docker, CI/CD pipelines and at least one cloud provider (AWS, GCP or Azure) — you will be setting these up, not consuming someone else's;
• Advanced (C1) level of English proficiency.
   

Nice to Have:
Experience as an early engineer at a startup, or otherwise building something from close to zero;
Multi-tenant, B2B or developer-facing infrastructure products;
Event-driven architectures using Kafka, RabbitMQ, NATS or SQS;
Kubernetes and infrastructure as code (Terraform, Pulumi);
Observability tooling: OpenTelemetry, Grafana, Datadog or equivalent;
Open-source contributions, or experience maintaining public SDKs and libraries.

What We Offer:
Compensation - 2500$ to 4000$.
Direct access - you work with the founders daily; there is no layer between you and the decision;
Fully remote across the EU;
Flexible schedule - we measure results, not hours;
Paid time off - 22 vacation days per year + 5 sick days (without medical confirmation);
Creative Freedom - We believe the best ideas thrive when people have real autonomy. Here, you don't need permission to think differently. You have room to experiment, fail, and adjust course.

We are looking for a Backend Engineer for our client, an established Israeli technology company specializing in custom Shopify development and e-commerce solutions.

The company partners with fast-growing brands to build scalable Shopify stores, custom applications, backend services, and complex integrations. Their engineering team works on production systems that power real businesses, focusing on performance, scalability, reliability, and clean architecture.

As a Backend Engineer, you’ll work directly with the client’s engineering team on long-term projects, building Shopify applications, backend services, APIs, and cloud-based solutions. This is a great opportunity for an engineer who enjoys solving complex technical challenges, takes ownership of their work, and wants to grow into a senior backend role.

Responsibilities

* Develop and maintain backend services using Node.js

* Build and maintain production REST APIs

* Develop custom Shopify applications and integrations

* Integrate third-party APIs and external services

* Work with PostgreSQL, MongoDB, or similar production databases

* Develop webhook-based integrations and event-driven functionality

* Troubleshoot production issues and implement long-term solutions

* Optimize backend performance, scalability, and reliability

* Collaborate directly with the client’s engineering team through Slack and code reviews

* Write clean, maintainable, and well-tested code

* Participate in technical discussions and architecture decisions

Requirements

Must Have

* 2–4 years of commercial backend development experience

* Strong experience with Node.js

* Experience building and maintaining production REST APIs

* Solid understanding of asynchronous programming (Promises, async/await)

* Experience working with production databases (MongoDB, PostgreSQL, or similar)

* Experience integrating third-party APIs

* Familiarity with AWS or GCP

* Understanding of clean architecture and separation of concerns

* Experience working with Git and CI/CD workflows

* Ability to work independently with minimal supervision

* Strong communication skills and confidence collaborating directly with the client’s engineering team in English

Nice to Have

* Shopify app development

* Shopify Admin API or Storefront API

* GraphQL

* Experience with webhooks and event-driven architectures

* Background jobs, queues, or message brokers

* Docker

* Experience working on e-commerce platforms

What We’re Looking For

* Ownership mindset and accountability

* Strong problem-solving skills

* Ability to work independently and deliver high-quality solutions

* Curiosity to learn system design and distributed systems

* Motivation to grow into a Senior Backend Engineer

* Attention to detail and passion for writing clean, scalable code

Our partner is a leading B2B iGaming supplier delivering engaging casino content to regulated markets worldwide. Since 2012, they’ve been building high-quality gaming experiences through a modern cloud-native platform that powers hundreds of operator brands across multiple jurisdictions.

Their Platform Solutions team sits at the heart of that ecosystem, enabling seamless integrations between the company, operators, aggregators and platform providers.

Our partner is looking for a Senior Backend Developer who thrives in a deeply hands-on environment and enjoys being close to the code on a daily basis. This role is heavily focused on building, optimising, and scaling backend services in a high-load system where performance and reliability are critical.

You’ll be working on complex, real-time challenges at the core of their platform – improving latency, ensuring high availability, and making systems more efficient at scale. This is not a coordination-heavy role; it’s for someone who enjoys writing production code, solving tough engineering problems, and seeing the direct impact of their work.

Main Responsibilities

• Work as part of a cross-functional team owning a core product within the platform
• Design, build, and deliver new backend features end-to-end in a distributed environment
• Write high-quality, production-level code daily, contributing directly to a high-load, scalable system
• Take ownership of services handling financial transactions at scale, with a strong focus on reliability
and accuracy
• Proactively suggest and implement improvements in architecture, processes, and development
practices
• Participate in code and architectural reviews to maintain high engineering standards
• Solve complex business and technical challenges with pragmatic, efficient solutions
• Participating in on-call rotations within the squad to ensure the reliability and availability of our
systems
• Play an active role in ongoing tech transformation initiatives across the platform
• Collaborate closely with engineers, product, and other stakeholders to deliver impactful solutions
used by millions globally

Mandatory Requirements

• Solid experience with Node.js/TypeScript is ideal, but we also welcome experts in other OOP
languages such as Java, Python, C++, C#, or Go.
• Strong understanding of asynchronous programming techniques
• Experience with distributed systems and messaging systems (Apache Kafka, gRPC)
• Knowledge of relational databases (MySQL, PostgreSQL), columnar databases (ClickHouse), and
NoSQL technologies (DynamoDB, MongoDB)
• Skilled in developing and maintaining end-to-end and unit tests
• Proven track record of developing production-ready solutions
• Degree in Computer Science or related field

Nice to Have
• Experience with large-scale microservices architecture.
• Good ground knowledge of Kubernetes
• Familiarity with cloud providers (especially AWS)
• Understanding of application security and industry best practices
• Understanding of enterprise development patterns
• Active performance observation
• Gambling domain experience

We offer

• Competitive Salary
• Quarterly Bonuses
• Unlimited Paid Time Off
• Unlimited Paid Sick Leave
• Remote & Flexible Working
• Private Medical Insurance
• Financial Support for Life Events
• Professional Development Budget
• International Exposure
• Regular Company Events

Superagent AI is building the AI-native distribution layer for insurance - a $7T industry still run on manual workflows and legacy software. We're an early-stage, fast-moving team reimagining how insurance is sold, serviced, and supported, with AI at the core. Backed by top-tier VCs, we're an international team of exited founders, builders, and technologists.

Already trusted by 100+ agencies, the job now is to build the next version of the platform quickly and run it reliably as we continue to scale rapidly — a real-time voice platform, an agent/skills layer, omnichannel messaging, and deep insurance system integrations.

Why this role exists

The product is in production and growing, and the hardest problems now live in the backend. We're bringing on at least two senior backend engineers to take real ownership across our core systems: real-time voice at growing call volume, a Temporal-driven campaign engine, multi-tenant data with strict isolation, and LLM/agent orchestration that has to be reliable.

There's a lot still to build. We're expanding deep into insurance-system and AMS/CRM integrations, and building on frontier AI technologies that most teams don't have access to yet — you'll get your hands on capabilities well before they're widely available. Each of you will own meaningful surface area end-to-end — designing it, building it, shipping it, and keeping it running.

This is a hands-on builder role. You take ambiguous, high-impact problems and turn them into shipped, reliable software. You're trusted to make architecture calls in your area, raise the quality bar, and set an example for how we build as the team scales.

What you'll own

• Shipping backend features end-to-end — from design through production, in one of our pods (Voice/AI, Campaigns + Integrations, or Platform/Reliability).
• Architecture of the systems you touch — event-driven flows, workflow orchestration (Temporal), data models, and the APIs other teams build on.
• Building what's next — new insurance-system and AMS/CRM integrations, plus greenfield work on frontier AI technologies we get early access to before the rest of the market.
• Reliability of what you ship — on-call for your services, SLOs, test automation, and turning flaky things "boring." Reliability is our #1 lever.
• Velocity through AI-native engineering — you use Claude Code and Codex every day to orchestrate coding agents and raise your leverage, without letting speed erode the reliability bar.
• Raising the bar around you — thoughtful code review, pragmatic technical decisions, and mentoring less-experienced engineers.

About you (must-haves)

• 6+ years building production backend software, still hands-on and shipping.
• Strong in TypeScript / Node and comfortable in a NestJS-style monorepo.
• Distributed / event-driven systems — you have specific opinions on queues, backpressure, idempotency, retries, and how services should communicate.
• PostgreSQL depth — schema design, query performance, and an understanding of multi-tenant isolation.
• AWS and production ownership — you've operated what you've built: monitoring, incidents, debugging real issues under load.
• You live in Claude Code / Codex (or equivalent) — fluent and opinionated about AI-assisted engineering. In 2026 we treat this as table stakes.

• Ownership mindset — you own your work end-to-end, including in production, and you're close to how it affects real agencies.

   

Bonus

• Real-time voice / telephony (Twilio, SIP, ASR/TTS, latency-sensitive audio).
• Building agentic systems - tools/skills frameworks, MCP, evals, guardrails - in production.
• Applied LLM work: fine-tuning, distillation, eval-driven development.
• Insurance, fintech, or another regulated/compliance-heavy vertical.

Our stack & tools

• Backend: TypeScript, Node, NestJS · monorepo (libs + apps)
• Orchestration: Temporal (Temporal Cloud) for the campaign/workflow engine
• Data: PostgreSQL on AWS RDS (multi-tenant, row-level security)
• AI: Anthropic + OpenAI models, prompt/agent orchestration, evals; fine-tuned/distilled models on our own data
• Frontend: React / Next.js
• Platform: AWS · Clerk (auth) · Datadog (observability) · Pylon + HubSpot (CS/CRM)
• How we ship: Linear (with agent delegation), GitHub, and Claude Code + Codex as part of daily engineering

How we build (engineering principles)

• Reliability is a feature. We don't ship what we can't keep running. The quality bar is non-negotiable.
• AI-native by default. Claude Code, Codex, and coding agents are part of how we work, not a novelty. We expect leverage from them, every day.
• Close to the customer. We prioritize real agency calls and feedback, not opinions in a room.
• Ship small, ship often. Short cycles, fast feedback, evals over guesswork.
• Ownership. Engineers own their work end-to-end - including in production.

How we work

Fast-moving distributed team with an AI-native engineering culture. We're closer to our customers than most competitors - that's our edge, and it drives how we prioritize. We ship things that work for real agencies, not demos.

  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 scalable B2B platforms.
  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 5+ years of commercial backend development experience with Node.js.
• Have 3+ years of commercial experience with TypeScript.
• Have 3+ years of experience with NestJS or be ready to quickly adopt it.
• Have hands-on experience with relational and NoSQL databases, including PostgreSQL, MySQL, and MongoDB.
• Have experience designing and developing microservice-based distributed systems.
• Have hands-on experience with RabbitMQ, Kafka, and event-driven architecture.
• Have experience with Redis for caching, Pub/Sub, or distributed synchronization.
• Have substantial experience writing and maintaining unit and integration tests using Jest.
• Have strong knowledge of software architecture, design patterns, SOLID principles, and engineering best practices.
• Have experience with Docker, Kubernetes, CI/CD pipelines, and communication technologies such as WebSocket or gRPC.
   

Your future responsibilities:

• Design and develop backend services and platform functionality.
• Build and maintain integrations with third-party technical services.
• Develop and maintain 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 building high-load, highly available, or real-time systems.
• Experience with observability and monitoring tools (Prometheus, Grafana, OpenTelemetry, ELK, etc.).
• Experience with cloud platforms such as AWS, GCP, or Azure.
   

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.

  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 scalable B2B platforms.
  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 5+ years of commercial backend development experience with Node.js.
• Have 3+ years of commercial experience with TypeScript.
• Have 3+ years of experience with NestJS or be ready to quickly adopt it.
• Have hands-on experience with relational and NoSQL databases, including PostgreSQL, MySQL, and MongoDB.
• Have experience designing and developing microservice-based distributed systems.
• Have hands-on experience with RabbitMQ, Kafka, and event-driven architecture.
• Have experience with Redis for caching, Pub/Sub, or distributed synchronization.
• Have substantial experience writing and maintaining unit and integration tests using Jest.
• Have strong knowledge of software architecture, design patterns, SOLID principles, and engineering best practices.
• Have experience with Docker, Kubernetes, CI/CD pipelines, and communication technologies such as WebSocket or gRPC.
   

Your future responsibilities:

• Design and develop backend services and platform functionality.
• Build and maintain integrations with third-party technical services.
• Develop and maintain 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 building high-load, highly available, or real-time systems.
• Experience with observability and monitoring tools (Prometheus, Grafana, OpenTelemetry, ELK, etc.).
• Experience with cloud platforms such as AWS, GCP, or Azure.
   

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.

  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 scalable B2B platforms.
  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 5+ years of commercial backend development experience with Node.js.
• Have 3+ years of commercial experience with TypeScript.
• Have 3+ years of experience with NestJS or be ready to quickly adopt it.
• Have hands-on experience with relational and NoSQL databases, including PostgreSQL, MySQL, and MongoDB.
• Have experience designing and developing microservice-based distributed systems.
• Have hands-on experience with RabbitMQ, Kafka, and event-driven architecture.
• Have experience with Redis for caching, Pub/Sub, or distributed synchronization.
• Have substantial experience writing and maintaining unit and integration tests using Jest.
• Have strong knowledge of software architecture, design patterns, SOLID principles, and engineering best practices.
• Have experience with Docker, Kubernetes, CI/CD pipelines, and communication technologies such as WebSocket or gRPC.
   

Your future responsibilities:

• Design and develop backend services and platform functionality.
• Build and maintain integrations with third-party technical services.
• Develop and maintain 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 building high-load, highly available, or real-time systems.
• Experience with observability and monitoring tools (Prometheus, Grafana, OpenTelemetry, ELK, etc.).
• Experience with cloud platforms such as AWS, GCP, or Azure.
   

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.

🚀 AIMPROSOFT is looking for a Senior Full Stack Developer (React + Node.js)! 

Aimprosoft is looking for a Senior Full Stack Developer on a contract basis ( ≈ 6-12 months) for an international project in the Utilities domain. 

You'll become part of an engineering team building the next generation of products that help utility companies plan, manage, and optimize field operations through workflow automation, cloud technologies, and AI-powered capabilities. 

🎯About the project & role: 

Our client is building an integrated platform for work planning and operational management in the utilities industry. 

The product ecosystem includes solutions for: 

• Work planning and scheduling 
• Street works permit management 
• Digital Twin for water networks 
• Operational Control Room dashboards 
• Workflow automation 
• AI-powered planning and forecasting 

The technology stack is primarily React, Node.js, Nest.js, PostgreSQL, and AWS, with some services built using Java Spring, Angular, and Serverless technologies. 

As a Senior Full Stack Developer, you'll take ownership of features from concept to production, contribute to architectural decisions, and work closely with experienced engineers and the client's UK team. 

Your responsibilities will include: 

• Designing, developing, and maintaining modern React applications 
• Building scalable backend services and REST APIs using Node.js and Nest.js 
• Delivering end-to-end product features across the full stack 
• Designing and optimizing PostgreSQL databases and queries 
• Deploying and supporting cloud-native applications on AWS 
• Participating in architecture discussions, code reviews, testing, and release activities 
• Troubleshooting production issues and improving platform reliability 
• Collaborating with product managers, designers, and engineering teams 
• Investigating technical challenges independently and driving solutions with minimal supervision 
• Leveraging modern AI development tools such as Cursor and Claude Code to improve productivity and accelerate development 

🔥What We Need From You: 

• 7+ years of commercial experience with Node.js, with a strong backend focus 
• Solid commercial experience with React 
• Upper-Intermediate+ (B2+) English level for daily collaboration with the client's UK-based team 
• Strong experience building REST APIs and backend services 
• Hands-on experience with Nest.js 
• Strong knowledge of PostgreSQL 
• Experience working with AWS services, including Lambda, ECS, API Gateway, and related cloud infrastructure 
• Good understanding of testing practices, Git workflows, and CI/CD pipelines 
• Strong analytical and problem-solving skills 

📌Nice to have: 

• Solid commercial experience with TypeScript 
• Experience with Docker and containerization 
• Infrastructure as Code (Terraform or CloudFormation) 
• Experience building SaaS platforms or highly available production systems 
• Knowledge of monitoring, observability, and cloud security best practices 
• Experience with Feathers.js 
• Experience with Playwright or Selenium for automated testing 
• Experience integrating third-party services such as Stripe, OpenSearch, or Elasticsearch 
• Experience working in large cross-functional engineering teams 
• Familiarity with Java Spring applications 

💼What We Offer: 

• Official military deferment (reservation); 
• A competitive salary that appreciates your skills and experience; 
• Opportunity to join a strategically important pilot team with long-term project prospects 
• Work on modern cloud-native products that deliver real-world impact 
• Exposure to AI-powered development practices and enterprise-scale engineering 
• Open environment where your ideas, technical expertise are valued