Jobs Node.js

Build the real-time AI governance control plane trusted by global enterprises

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:

You’ll work on a cloud-native AI governance platform designed to intercept, classify, and control high-velocity AI interactions in real time — without revealing the client’s identity.

The platform analyzes user prompts, AI responses, coding-agent activity, and enterprise search outputs flowing across HTTP streams, IDE extensions, LLM APIs, and internal microservices. It applies need-to-know access filtering, policy transformations, and audit controls within sub-second decision windows, ensuring sensitive knowledge never crosses boundaries it shouldn’t. As enterprises adopt generative AI at scale, traditional access-control models break down. This product introduces a new security layer purpose-built for AI systems, enabling organizations to innovate quickly while maintaining strict governance over their data and models.

You will be joining a core engineering team that is building a platform with real industry impact — one shaping how AI responsibly integrates into the modern enterprise.

About the Role:

We are looking for a Senior Full-Stack Engineer (Backend-focused) to join a small, high-caliber team developing the core components of this real-time governance system.

Your primary focus will be backend engineering with Node.js/TypeScript — building high-performance services, scalable APIs, distributed processing flows, and policy-evaluation pipelines. When needed, you’ll contribute to the React-based frontend to deliver features end-to-end. You will take ownership of major technical decisions, collaborate with engineering, product, DevOps, and AI/security

Why This Role Stands Out:

• Mission-critical product defining how enterprises safely adopt AI
• Deep engineering challenges — real-time pipelines, distributed flows, policy engines
• Modern stack: Node.js, TypeScript, React, PostgreSQL, Docker, cloud-native tooling
• High degree of autonomy and technical ownership
• Work closely with an elite product and AI/security team
• Fully remote, flexible environment with strong operational support

What You Bring:

• 10+ years of professional software development experience
• 5+ years of hands-on experience with Node.js and TypeScript
• Strong knowledge of backend architecture, distributed systems, and scalable service design
• Proven experience working with SaaS-based systems
• Experience with relational databases (PostgreSQL or similar)
• Experience with containerized/cloud-native environments
• Practical React experience sufficient for full-stack delivery
• Deep understanding of JavaScript/TypeScript runtime patterns and performance considerations
• Strong communication skills and comfort working asynchronously in a distributed team
• Ability to thrive in a fast-paced, high-ownership environment
• Excellent English (written and spoken)

Nice to Have:

• Experience with CI/CD pipelines (GitHub Actions or similar)
• Experience with Python and/or Go
• Production experience with large-scale TypeScript-based backend systems
• Exposure to LLM/AI products (LLM APIs, vector DBs, orchestration frameworks)
• Experience integrating ML/AI models into production systems
• Background in B2B or security-focused products
• BSc in Computer Science or related field

Why Us?

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

We provide full accounting and legal support in all countries 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.

United Tech is a global IT product company shaping the future of real-time social connection. With millions of users across North America, Europe, LATAM, and MENA, we build next-gen mobile and web apps for live-streaming and social networking. Our platforms enable connection at scale fast, interactive, and deeply engaging. The market is projected to exceed $206B by 2030, and we are already leading the evolution. Founded in Ukraine, scaling worldwide

About the product: Global video communication app, where you can meet new friends and communicate with people all over the world. You can co someone very smart, funny, pleasant, just a person of your type. But it’s always up to you whether to join chat or keep searching for another interesting person. We are proud of how many people we connect daily!

In this role, you will

• Take part in team processes (grooming, sprint planning)
• Develop and deliver product tasks to the production environment
• Work on reducing and preventing technical debt
• Create technical designs for product epics
• Decompose epics into clear, executable tasks
• Conduct technical investigations and propose solutions

It’s all about you

• 4+ years of commercial experience in backend development
• 3+ years of experience with Node.js backend development
• Experience with relational and non-relational databases (MongoDB, Postgres and Redis)
• Experience with SOA/Microservices (communication, development process)
• Experience with patterns (DDD, event-driven, SOLID, CQRS)
• Experience working with WebSockets (ws, socket.io)
• Experience working with messaging (BullMQ, RabbitMQ, Kafka)
• Experience with cloud providers (AWS, GCP, etc)
• Experience in scaling and high-load products
• Upper-Intermediate English or higher

What we offer

Care and support:

• 20 paid vacation days, 15 sick days, and 6 additional days off for family events
• Up to 10 additional days off for public holidays
• 100% medical insurance coverage
• Sports and equipment reimbursement
• Team building events, corporate gifts, and stylish merch
• Financial and legal support
• Position retention and support for those who join the Armed Forces of Ukraine
• Participation in social initiatives supporting Ukraine

Comfortable working environment:

• Work from our Kyiv hub or remotely with a flexible schedule
• Modern equipment or depreciation of your own tools

Investment in your future:

• Collaborate with a highly-skilled team of Middle & Senior professionals, sharing practical cases and expertise in the social networking niche
• 70% of our heads and leads have grown into their roles here — so can you!
• Performance-oriented reviews and Individual Development Plans (IDPs)
• Reimbursement for professional courses and English classes
• Corporate library, book club, and knowledge-sharing events

Hiring process

• Intro call
• Technical Interview
• Final Interview
• Reference check
• Offer

We're looking for a motivated JavaScript developer at the junior or trainee level to join a team that builds production-grade web scrapers for enterprise clients. Your work will run on enterprise-level web data infrastructure used by some of the world's most recognizable brands - from Fortune 500 retailers like Nike to global technology companies like Philips - powering their market research, price intelligence, and competitive data pipelines.

This is a hands-on engineering role. You won't be writing toy examples - from early on you'll be building real scrapers that extract structured data at scale.

Responsibilities

- Analyze target websites using Chrome DevTools to understand DOM structure and network requests

- Write JavaScript scrapers using Cheerio and related libraries

- Craft precise CSS selectors and XPath expressions to reliably target data elements

- Use Postman to inspect APIs and reverse-engineer data endpoints where applicable

- Handle pagination, dynamic content, and common anti-scraping patterns

- Deliver clean, structured output data (JSON/CSV) per client specifications

- Maintain and update existing scrapers as target sites change

Tech stack

JavaScript, Cheerio, CSS Selectors, XPath, Chrome DevTools, Postman, Git

Requirements

- 1 year of JavaScript experience in any context (commercial, freelance, or project-based), OR currently enrolled in / recently graduated from a Software Engineering, Computer Science, or related program

- English B2 or higher - you must be able to read technical documentation and communicate with the team in English

- Understanding of HTML/DOM structure and HTTP basics

- Ability to learn independently and figure things out from documentation

Nice to have

- Any personal or academic projects involving scraping, parsing, or browser automation

- Familiarity with Node.js ecosystem

- Basic knowledge of how proxies or headless browsers work

What we offer

- Work on real client projects from day one - no synthetic tasks

- Mentorship and code review from experienced engineers on the team

- Remote-first, fully async-friendly - work from anywhere

Own your future:

Our culture isn't something people join, it's something they build and shape. We believe that every person deserves to be heard and empowered. If you're on the fence about whether you're a fit, we say go for it. Let’s build something great together.
‍

Must Haves:

• A full-stack mindset, ready to work across the back-end, front-end, infrastructure and firmware.
• Excellent troubleshooting skills with experience in building microservices on AWS using Lambda, Amazon S3, Amazon Cognito, Amazon API Gateway, DynamoDB, AWS IoT Core, Kinesis, SNS, SQS.
• Strong experience with Node.js / JavaScript / TypeScript.
• Previous exposure to large-scale systems design, experience with the serverless approaches using AWS Lambda.

• Experience with Golang.

   

Nice to have:

• Understanding of specifics for running Go under heavy load.
• Understanding IoT solutions and having built or been part of a team that delivered an IoT solution is a huge plus.

• Experience with Kafka and familiarity with event-driven architectures.

   

Key Responsibilities:‍

• Provide support for the software architecture, design, and implementation of software components related to IoT-connected products.
• Optimize data storage by balancing performance, cost, and storage tradeoffs through various database technologies.
• Drive engineering from concept to finished product.
• Design, and build usable, robust, and reliable services.
• Contribute to architectural decisions, infrastructure setup, and production operation.

‍

Inforce — Software Development Company delivering high-quality web and mobile solutions for international clients.

Required Skills:
 

Backend:

• 1+ years of commercial experience with Node.js
• Strong knowledge of RESTful APIs and integrations
• TypeScript, NestJS
• MySQL or PostgreSQL
• Experience with Redis, RabbitMQ
   

Frontend:

• 1+ years of commercial experience with React.js
• TypeScript
• State management (Redux / RTK / MobX)
• Data fetching (SWR / RTK Query)
• React Hooks
• SASS, Bootstrap or similar
• Git
• Intermediate English or higher
   

Would be a plus:

• Experience with BullMQ

Responsibilities:

• Develop backend services and APIs
• Build and maintain React applications
• Work with databases and integrations
• Collaborate with team and participate in development process

We offer:

• Competitive salary 
• Interesting projects
• Paid sick leave and vacation days
• Professional and supportive team
• 50% compensation for professional courses
• Team-building activities and corporate events
• Office in the city center
  
  Grow your career with a team that values people as much as results.

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.

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.

Our Team

VistaCreate, part of the Vistaprint group is an online graphic design tool with thousands of free templates and AI-powered features to bring ideas to life. We’re looking for a Senior Backend Engineer to join the VistaCreate team and help us build scalable, reliable, and high-performance backend services that power millions of users worldwide. You will play a key role in designing architecture, improving system performance, and driving technical decisions within the backend domain.

What You Will Do

• Design, develop, and maintain scalable backend services
• Build and maintain RESTful APIs
• Work with MongoDB and optimize database performance
• Design and improve microservice architecture
• Ensure high availability, performance, and security of backend systems
• Participate in code reviews and architectural discussions
• Improve CI/CD pipelines and containerized environments
• Collaborate closely with frontend, product, and DevOps teams

Your Qualifications

At VistaPrint, we are striving to hire individuals that add new ideas and perspectives to our teams and enhance our culture. No matter your background or work experience, we strongly encourage you to apply—even if you feel that you don’t meet the exact requirements or have the same qualifications. You might be a great candidate for this or other opportunities. 

• 5+ years of backend development experience
• Strong experience with Node.js and TypeScript
• Strong understanding of REST API design principles
• Experience with MongoDB (data modeling, performance optimization)
• Understanding of microservices architecture
• Experience with message brokers (RabbitMQ)
• Experience with monitoring/logging systems (Grafana, Sentry)
• Experience with high-load systems
• Intermediate+ English (written and spoken)

Nice to Have

• Experience with Go
• Experience with Docker and containerized environments
• Experience with cloud platforms (AWS)
• Experience working in product companies
• Knowledge of security best practices

Why You'll Love Working Here

There is a lot to love about working at VistaPrint. We are an award winning Remote-First company. We’re an inclusive community. We’re growing (which means you can too). And to help orient us all in the same direction, we have our Vista Behaviors which exemplify the behavioral attributes that make us a culturally strong and high-performing team. 

About Us

VistaPrint is the design and marketing partner to millions of small businesses around the world. For over 20 years we’ve been inspired by small businesses, and we work incessantly to deliver solutions to their evolving needs. Together, VistaCreate, 99designs by Vista and VistaPrint represent a full-service design, digital and print solution, elevating small businesses’ presence in physical and digital spaces and powering them to achieve success. VistaPrint is focused on making great marketing and design accessible to every small business owner, allowing them to create a cohesive brand image for use in-store, online and on-the-go.

Commitment to Diversity, Equity, & Inclusion

VistaPrint exists to help our customers live their dreams. Each dream is unique – and the VistaPrint team needs to be as well. We believe in the unique contributions of everyone within a diverse global organization. We are collaborative, inclusive, and innovative. We strive to role model and live an inclusive culture of fairness, respect and belonging for all. And we work together to empower each other, creating a space in which each of us can spark our next great idea. 

Equal Opportunity Employer

VistaPrint, a Cimpress company, is an Equal Employment Opportunity Employer. All qualified candidates will receive consideration for employment without regard to race, color, sex, national or ethnic origin, nationality, age, religion, citizenship, disability, medical condition, sexual orientation, gender identity, gender presentation, legal or preferred name, marital status, pregnancy, family structure, veteran status or any other basis protected by human rights laws or regulations. This list is not exhaustive and, in fact, in many cases, we strive to do more than the law requires.

Scope of work essentially includes the development and enhancement of modern web applications within the JavaScript/TypeScript ecosystem as well as the implementation of scalable backend services on AWS. In particular:
 

• Backend development on AWS including serverless architectures (Lambda, DynamoDB, SQS, S3, CloudWatch, Cognito).
• Infrastructure-as-Code using CloudFormation or Serverless Framework.
• Stack: Angular on frontend and AWS backend or comparable JS/TS stacks.
• Implementation and maintenance of REST APIs (OpenAPI).
• Ensuring software quality: Clean Code, reviews, unit and E2E tests.
• Use of CI/CD pipelines (Azure DevOps) and Git.

• Collaboration in agile teams as well as support in operations, monitoring, and troubleshooting.

   

Backend Developer AWS (IaC, Serverless)

• Excellent knowledge of the JavaScript/TypeScript ecosystem.
• Several years of experience with AWS cloud technologies.
• Expert knowledge in serverless architectures (Lambda, DynamoDB, SQS, Cognito, etc.).
• Infrastructure-as-Code with CloudFormation or Serverless Framework.
• Development of scalable REST APIs.

• Experience with Git, code reviews, and CI/CD.

   

Otherwise, nothing specific

• Confident use of Git and pull requests.
• Experience with CI/CD pipelines (Azure DevOps preferred).
• Experience in test automation (unit, integration, E2E).
• Good communication skills as well as a structured, independent way of working.
• Experience in agile development teams.
• Desirable: Knowledge of the energy sector

About the Role

We are looking for a Backend Developer with strong Node.js experience to join our team. You will work on building scalable backend services and integrating modern technologies into high-performance applications.

You’ll collaborate with a skilled engineering team to design reliable systems, work with complex infrastructure, and deliver secure and scalable solutions.

Requirements

• 3+ years of experience in backend development
• Commercial experience working with cryptocurrency / blockchain projects
• Understanding of different blockchain networks
• Strong proficiency in JavaScript and TypeScript
• Solid production experience with Node.js
• Strong understanding of EVM architecture and smart contracts
• Experience building scalable distributed systems
• Knowledge of security best practices in crypto environments
• Experience with Docker and containerized environments

Nice to Have

• Experience improving performance and scalability of backend systems

If this sounds like your next challenge, feel free to apply and join our team.🚀

Want to work at the cutting edge of modern technology and artificial intelligence? We have something just for you.

We are looking for a Node.js engineer who is not only confident in backend development but also has a genuine interest in AI integrations, LLM agents, and new automation technologies. This role involves participating in the creation and development of AI assistants, platforms, and interfaces that help businesses be more efficient.

What to expect:

• Regular technical challenges — a new case from a customer every week
• Flexible use of AI tools (OpenAI API, WhatsApp/Telegram API, OCR, N8N, scrapers)
• Hands-on experience with workflow automation platforms, particularly N8N, for creating complex business process automations
• Building end-to-end AI workflows that connect multiple services and APIs
• Opportunity to experiment with emerging AI technologies and automation tools as they become available

Our main requirements are:

• Experience in hands-on programming 3+ years
• Experience doing Node.js (Vanilla/Typescript)
• Experience with NestJS also and/or NextJS and/or Express
• Strong creating with SQL/NoSQL databases efficient design from scratch as well as performing optimizations
• Strong knowledge in Computer Science: data types, data structures, algorithms
• Being proficient working on modern tech stack: Docker, Kubernetes, CI/CD, IaC (e.g. Terraform), Ansible etc.
• Having a wide strong background working with AWS (smth beyond EC2 and S3)
• Understanding and applying software design principles
• Experience designing software systems (distributed, high availability, resilient)
• Comfortable working Agile and Design Thinking (however understanding that pure Agile is a myth)
• Being comfortable in several projects at once (taking apart hands-on aspect)
• Strong communication skills in English (B2 and better)
• Willingness and enthusiasm to learn workflow automation tools (especially N8N) and adapt to rapidly evolving AI technologies

Will be considered as a plus:

• Experience with modern SPA frameworks like React/Vue.js/Angular
• Experience with NestJS
• Experience writing technical documents, tracking technical debt, understanding refactoring etc.
• Experience working with AI libraries and/or 3rd parties like chatGPT, Claude, Gemini or Perplexity
• Previous exposure to workflow automation platforms (N8N, Zapier, Make.com, or similar)
• Experience with RAG implementations, vector databases, or knowledge management systems
• Familiarity with MCP (Model Context Protocol) or similar AI integration standards
• Understanding of prompt engineering and AI agent behavioral design
• Experience building conversational AI interfaces or chatbots

Hiring process:

• HR interview: we’ll talk about your professional background, the specifics of the position we are offering, and address any questions you might have.
• Tech interview: a deeper look into your technical expertise and problem-solving approach, ensuring your skill set aligns with our project’s needs.
• Interview with the C-Level: a conversation focused on the company’s vision, strategic goals, and how your role aligns with them.
• Feedback
• Job offer

What we offer at MindTech:

• Hardware Policy: Get the gear you need, from laptops to PCs.
• Referral Bonus: Invite talent and earn a generous reward.
• Professional Growth: We cover courses and books to fuel your expertise.
• Tasty Perks: Free lunches, snacks, tea, and coffee to stay energized.
• Birthday & Celebrations: Gifts on your day, plus parties and team-building.
• Life Events Support: Wedding bonuses, childcare support, and more.
• Volunteering Days: Extra days off to help your community.
• Work-Life Balance: 18 paid vacation days, 10 paid sick days, and national holidays off.

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.

On behalf with our customer we are seeking for Full Stack Team Lead to join our global R&D department in Poland.

Our customer is an innovative technology company led by data scientists and engineers devoted to mobile app growth. Their proprietary ad platforms powered by machine learning are the outcome of that devotion.
They reward talents, employees support each other to advance individually and as a team.

Responsibilities

● Design, code, and manage large scale, highly available, real-time (low latency) services using cutting edge technologies (Node.js, React, Redis, Kubernetes, etc. over AWS).
● Lead and mentor a team of around 4 members, abroad, and performing code reviews to other team members.
● Work with stakeholders including the Executive, Product, Data, and Design teams to craft the most optimal solutions for our problems.
● Design and develop APIs or integrate with 3rd party APIs
● Manage a time-efficient sprint plan. Plan, groom and manage the present sprint and the upcoming ones with Product
● Understand and implement security and data protection needs, and assist in-house teams and supply creative solutions for various problems.

Requirements

● 7+ years of coding experience in Backend (NodeJS is preferred) and Frontend (One of the popular frameworks; React, Vue, Angular)
● 3+ years of management experience
● Working knowledge with SQL and NoSQL databases
● Working with one of the cloud providers: AWS, Google, Microsoft
● Experience with Kubernetes
● Experience in the software life cycle and knowing how to work in an agile environment
● Can-do attitude, self-sufficient, capable of learning alone and good English

Bonus Skills

● Experience working with offshore contactors
● Experience with web-based SaaS systems
● Experience with Big Data

What We Offer

● Working schedule Sunday-Thursday - must have
● Accounting support & consultation
● Opportunities for learning and developing on the project
● 20 working days of annual vacation
● 5 days paid sick leaves/days off; state holidays
● Provide working equipment

Backend Engineer

[Freelance, Full-time, Remote]

SNEAK PEEK

⇨ Location: Remote, GMT+0/GMT+4

⇨ Interview process: HR interview + take-home challenge ⇨ technical discussion ⇨ final interview

WHO ARE WE? 

At Rounds, we believe in harnessing the power of cutting-edge technology to drive business success. Our transformative, AI technology identifies and optimizes mobile assets, while our team of experts, with their unparalleled human capital and business acumen, provides the strategic direction and support to turn mobile assets into profitable businesses. Together, we are revolutionizing the mobile industry. 

THE ROLE

This is a hybrid Backend/Platform Engineering role to lead cloud and backend systems migrations. It involves shipping backend solutions that move the needle at the scale of millions of dollars in business impact.

You will evaluate, plan, and migrate backend systems from various stacks and cloud providers (AWS, Azure, GCP, and more) into our infrastructure. By leveraging AI tools and automation, you will significantly accelerate migrations and modernization efforts.

This role suits Backend Engineers who aren't afraid to jump in and shape the DevOps stack.

Responsibilities

• Architect, evolve, and oversee backend infrastructure transformations (NodeJS, Python and more).
• Assess complexity, outline risks, and estimate effort and timelines.
• Rebuild or refactor backend/cloud components when needed, including rewriting services (with AI assistance).
• Utilize AI tools and agents to speed up research, refactoring, documentation, and investigations (Claude, Cursor and more).
• Design and maintain cloud environments using Infrastructure as Code (Terraform preferred) mainly for GCP, AWS and Azure.
• Build, maintain, and improve CI/CD pipelines.

Hiring manager: Igor Yakunin 

WHAT ARE WE LOOKING FOR?

Must-have:

• 5+ years Backend Engineering.
• Hands-on experience with GCP or strong AWS/Azure background and willingness to transition.
• Practical experience with Terraform (or similar IaC).
• Strong Linux, networking, and cloud fundamentals.
• Experience with Docker and containerized deployments.
• Proficiency in at least one backend language (Python, Node.js, Go, Java, etc.).
• Experience with SQL and/or NoSQL databases.

Nice-to-have:

• Experience with Kubernetes or other orchestration tools.
• Familiarity with CI/CD platforms such as CircleCI, GitHub Actions, GitLab CI, or ArgoCD.
• Experience with reverse-engineering unknown systems or digging through legacy setups.
• Experience with monitoring tools such as Datadog, Prometheus, or GCP Monitoring.
• Background in refactoring, rewriting, or modernizing backend services.

INTERESTED?

Our recruitment process consists of the following steps: 

• HR Interview (45 min) - Discuss your background and fit.
• Take-Home Challenge (~2 hours of work) - Practical assignment reflecting real work.
• Technical Interview (60 min) - Evaluate cloud, DevOps, and coding skills.
• Final Interview (60 min) 

Get in touch at hr@rounds.com. 

We look forward to hearing from you! 

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