Jobs Node.js

We are looking for an experienced Founding Engineer / AI-Native Tech Lead to build and scale a gamification platform within the iGaming industry.

This is a hands-on role combining backend development, system architecture, and technical leadership. You’ll take ownership of key technical decisions, build reliable and scalable solutions, and help establish efficient AI-assisted engineering practices.

Responsibilities:

• Design, develop, and scale the backend architecture of a gamification platform.
• Build reliable APIs, real-time features, event-driven systems, and asynchronous workflows.
• Develop and maintain integrations with casino platforms, PAM systems, and third-party services.
• Ensure platform security, performance, scalability, and data consistency.
• Implement AI-assisted development workflows using tools such as Claude Code, Cursor, or Codex.
• Establish engineering best practices, including code reviews, testing, CI/CD, and monitoring.
• Lead and mentor a small engineering team while remaining actively involved in development.
• Collaborate with Product and other teams to turn business requirements into technical solutions.

Requirements:

• 7+ years of commercial software development experience, including technical leadership and SaaS product development.
• Strong backend expertise in TypeScript, Node.js, NestJS, or a comparable stack.
• Solid knowledge of PostgreSQL, Redis, transactions, concurrency, and database optimization.
• Experience with multi-tenant SaaS, event-driven architecture, domain modeling, and state machines.
• Strong understanding of REST APIs, WebSockets, webhooks, JWT/OAuth, and third-party integrations.
• Knowledge of application security, including RBAC, audit logging, OWASP, and rate limiting.
• Experience with Docker, CI/CD, AWS/GCP, and production monitoring.
• Practical experience with AI-assisted development tools and the ability to review and validate AI-generated code.
• Strong problem-solving skills, architectural thinking, and a hands-on approach to technical leadership.

Nice to Have:

• Experience in iGaming, casino platforms, or gamification products.
• Understanding of gaming mechanics, RNG, and PAM integrations.
• Familiarity with React / Next.js.
• Experience building products from scratch in a startup environment.

What We Offer:

• Opportunity to build a gamification product and shape its technical architecture.
• High level of ownership and influence over technical decisions.
• Modern AI-assisted development environment.
• Direct impact on product development and business growth.
• Flexible working environment within a growing iGaming company.

🩵 How We Take Care of Our Team?

Comfortable Conditions for Productive Work
Flexible working hours with a start time between 8:00 AM and 11:00 AM. Work remotely from anywhere in the world or join us in our modern Cyprus office — the choice is yours.

Time to Recharge
We believe great results come from well-rested people. That’s why we offer:
21 days of paid annual leave;
3 additional Day Offs per year;
25 paid sick leave days;
Public holidays as days off.

Benefits & Wellbeing
Sports compensation program;
Annual healthcare budget;
Gifts for important life events (birthday, marriage, childbirth);
Coworking compensation for team members based in Ukraine;
Maternity and paternity leave support;
Business trips and team gatherings at our Cyprus office.

Learning & Career Growth
Annual budget for professional development, certifications, books, and language courses;
Internal mobility and promotion programs to support both vertical and horizontal career growth;
A Personal Development Plan to help you grow your skills and competencies.

Smooth Onboarding & Ongoing Support
We’ve designed a structured onboarding plan to help you quickly understand the business, the team, and your priorities. Regular check-ins with your manager and People Partner ensure a smooth adaptation process and continuous support throughout your journey with us.

About the Position

We’re growing fast and looking for a Senior Backend Engineer to join our Engineering team and help build the infrastructure that powers our platform at scale.

This is a high-impact role where you’ll work alongside top-tier engineers, designing and building secure, high-performance systems in a fast-paced environment. If you enjoy solving complex technical challenges and want your work to have real impact — we’d love to meet you.

What We’re Looking For

• Bachelor’s degree in Computer Science or a related field
• 5+ years of experience in backend development
• Strong experience building scalable, production-grade systems
• Proficiency in Node.js
• Experience with SQL and NoSQL databases
• Familiarity with cloud platforms and microservices architecture
• Strong problem-solving skills and attention to detail
• Passion for writing clean, maintainable, and efficient code

Bonus Points For

• Experience in cybersecurity or building security-focused products
• Experience working in startup or high-growth environments
• Familiarity with DevSecOps / SDLC tools
• Experience with distributed systems and high-scale data processing

We’re currently exploring a potential PIM project in the pre-sales stage and are looking to identify a strong Senior PIM Developer who could join if the opportunity moves forward.
 

Role details:

Duration: 2 months, full-time

Location: Anywhere

English: Fluent

Start: ASAP, subject to project confirmation
 

Requirements:

Hands-on experience with PIM platforms.

Experience with REST APIs, GraphQL, and middleware tools for integrating PIM with ERP, eCommerce, DAM, and other systems.

Experience integrating with CDNs to optimize resource delivery and bandwidth.

Proficiency in monitoring and debugging tools to identify errors and performance bottlenecks.

Experience with version control and collaborative development.

Strong understanding of data modeling, product taxonomies, attributes, classifications, and data hierarchies.

Fluent English, both written and spoken.

Nice to have:

Experience with Akeneo or BluestonePIM.

Knowledge of JavaScript frameworks and technologies: React, Vue, Node.js, and TypeScript.

Experience with eCommerce platforms such as Adobe Commerce, commercetools, or Shopify.

Experience with DAM systems.

Cloud experience with GCP, Azure, or AWS.

Since the project is currently in pre-sales, we’re initially looking to identify suitable profiles rather than make an immediate commitment.

The rate is completely open and negotiable, depending on the candidate’s experience and expectations.

Stack: Node.js (TypeScript), AWS (focus on AWS Lambda), Step Functions, MySQL, Docker, Microservices, Serverless, AI Agents.
 

We are seeking an experienced Middle+ Node.js Developer to join our team of talented developers for a stable yet dynamic enterprise product.

As a Node.js Developer, you will play an integral role in developing, maintaining, and refactoring the existing codebase of a multi-service product with complex business logic. You will work closely with our experienced Backend team, leverage the latest technology stack, and have clear opportunities to grow into a Team Lead role in the future.

About the Project

A stable enterprise product for creating marketing presentations, preparing accompanying materials, and developing sales cycle business assistants for global pharmaceutical companies (such as AstraZeneca, Novartis, Pfizer, Veeva) and financial institutions (such as ING and Van Lanschot). We have been developing our own codebase since 2015.

Our services are distributed across multiple Availability Zones, adhering to a service-oriented architecture. Since 2018, we have prioritized GraphQL, although we maintain comprehensive support for RESTful APIs. Our core API services are built on a diverse stack of programming languages, each chosen to optimize task performance. This stack includes a rapidly evolving Golang Core API, legacy Core API services in PHP (leveraging frameworks like Laravel and Yii2) for established business logic and data layer interactions, Node.js (utilizing both JavaScript and TypeScript), Python APIs, and .NET Core C# components.

We utilize a hybrid cloud infrastructure, harnessing the strengths of both AWS and GCP to meet our operational needs, with a heavy focus on Serverless. Our work also involves extensive integration with API partners, including Veeva, Salesforce, and various others, to ensure a seamless and robust service ecosystem.

As a product with high-security requirements, we undergo regular penetration testing from auditors and client companies to ensure compliance with industry standards such as OWASP, SOC, and ISO.

Who We Are Looking For

• A TypeScript & Cloud Expert: Strong commercial experience with deep expertise in TypeScript and cloud-native serverless solutions.
• Polyglot Mindset: Readiness to write code in Golang and other languages if needed. Prior knowledge of Golang or PHP is a strong plus, but if you don't know them yet, you should be eager and ready to pick them up on the job.
• Tech-Forward (AI-Ready): Experienced in working with AI agents and tools to streamline and boost your development workflow.
• Proactive & Communicative: Strong soft skills, clear expression of thoughts, active involvement in decision-making, and high self-organization.
• Leadership Ambitions: An engineer who is interested in growing into a Team Lead position as the team and project evolve.

Essentials

• Strong commercial experience in backend software engineering (Middle+ or Senior level).
• Deep knowledge of TypeScript & Node.js, with proven hands-on experience in AWS Lambda, AWS Step Functions, Express, and NestJS.
• Solid Cloud expertise: Hands-on experience with serverless architecture and AWS services.
• Proficiency in software testing, including unit, integration, functional, and regression testing.
• Expertise in performance monitoring, optimization techniques, and troubleshooting.
• Strong knowledge of SQL, databases, and a solid understanding of transactions.
• Deep understanding of OOP, design patterns, cryptography, algorithms, and data structures.
• Versatility and comprehension of how all aspects of a web project work together (frontend, backend, and the network layer).
• Practical System Design skills.
• Practical experience using AI coding assistants / AI agents in daily workflows.
• Strong soft skills, proactive attitude, and interest in moving towards a Team Lead role.
• English reading and writing: Upper-Intermediate.
• English speaking: Lower-Intermediate (Upper-Intermediate is a plus).

Nice-to-haves

• Hands-on experience or prior development background in Golang and PHP.
• Experience in building APIs using both REST and GraphQL.
• Understanding of EDA (Event-Driven Architecture), Microservices, Hexagonal Architecture.
• Proficiency in Docker and hands-on experience with CI/CD Pipelines.
• Familiarity with agile methodologies (Scrum, Kanban).
• Degree in Computer Science or related field.

• English speaking: Upper-Intermediate.
  
  Benefits:

  In addition to a great base salary, we offer:

• Funding for conferences, co-working spaces, software licenses, and other work-related expenses
• MacBook if you require one
• Mobile devices if you are involved with mobile development projects
• Flexible working hours and fully remote working without micromanagement
• Modern technology stack
• Time for open source development
• Bonus at the end of the year
  Paid study leave
• Paid English language courses
• 36 company-paid days off per annum
• Access to educational streaming services like Pluralsight
• Input on the development of the company

Our core values:
We are open-minded, humble, respectful, self-driven, and honest, which allows us to create an atmosphere of synergy. Our team is a great fit for those who value self-organization and are passionate about personal growth. If this resonates with you, we’d love to have you join the team.

Stack: Node.js (TypeScript), AWS (focus on AWS Lambda), Step Functions, MySQL, Docker, Microservices, Serverless, AI Agents.
 

We are seeking an experienced Senior Node.js Developer to join our team of talented developers for a stable yet dynamic enterprise product.

As a Node.js Developer, you will play an integral role in developing, maintaining, and refactoring the existing codebase of a multi-service product with complex business logic. You will work closely with our experienced Backend team, leverage the latest technology stack, and have clear opportunities to grow into a Team Lead role in the future.

About the Project

A stable enterprise product for creating marketing presentations, preparing accompanying materials, and developing sales cycle business assistants for global pharmaceutical companies (such as AstraZeneca, Novartis, Pfizer, Veeva) and financial institutions (such as ING and Van Lanschot). We have been developing our own codebase since 2015.

Our services are distributed across multiple Availability Zones, adhering to a service-oriented architecture. Since 2018, we have prioritized GraphQL, although we maintain comprehensive support for RESTful APIs. Our core API services are built on a diverse stack of programming languages, each chosen to optimize task performance. This stack includes a rapidly evolving Golang Core API, legacy Core API services in PHP (leveraging frameworks like Laravel and Yii2) for established business logic and data layer interactions, Node.js (utilizing both JavaScript and TypeScript), Python APIs, and .NET Core C# components.

We utilize a hybrid cloud infrastructure, harnessing the strengths of both AWS and GCP to meet our operational needs, with a heavy focus on Serverless. Our work also involves extensive integration with API partners, including Veeva, Salesforce, and various others, to ensure a seamless and robust service ecosystem.

As a product with high-security requirements, we undergo regular penetration testing from auditors and client companies to ensure compliance with industry standards such as OWASP, SOC, and ISO.

Who We Are Looking For

• A TypeScript & Cloud Expert: Strong commercial experience with deep expertise in TypeScript and cloud-native serverless solutions.
• Polyglot Mindset: Readiness to write code in Golang and other languages if needed. Prior knowledge of Golang or PHP is a strong plus, but if you don't know them yet, you should be eager and ready to pick them up on the job.
• Tech-Forward (AI-Ready): Experienced in working with AI agents and tools to streamline and boost your development workflow.
• Proactive & Communicative: Strong soft skills, clear expression of thoughts, active involvement in decision-making, and high self-organization.
• Leadership Ambitions: An engineer who is interested in growing into a Team Lead position as the team and project evolve.

Essentials

• Strong commercial experience in backend software engineering (Middle+ or Senior level).
• Deep knowledge of TypeScript & Node.js, with proven hands-on experience in AWS Lambda, AWS Step Functions, Express, and NestJS.
• Solid Cloud expertise: Hands-on experience with serverless architecture and AWS services.
• Proficiency in software testing, including unit, integration, functional, and regression testing.
• Expertise in performance monitoring, optimization techniques, and troubleshooting.
• Strong knowledge of SQL, databases, and a solid understanding of transactions.
• Deep understanding of OOP, design patterns, cryptography, algorithms, and data structures.
• Versatility and comprehension of how all aspects of a web project work together (frontend, backend, and the network layer).
• Practical System Design skills.
• Practical experience using AI coding assistants / AI agents in daily workflows.
• Strong soft skills, proactive attitude, and interest in moving towards a Team Lead role.
• English reading and writing: Upper-Intermediate.
• English speaking: Lower-Intermediate (Upper-Intermediate is a plus).

Nice-to-haves

• Hands-on experience or prior development background in Golang and PHP.
• Experience in building APIs using both REST and GraphQL.
• Understanding of EDA (Event-Driven Architecture), Microservices, Hexagonal Architecture.
• Proficiency in Docker and hands-on experience with CI/CD Pipelines.
• Familiarity with agile methodologies (Scrum, Kanban).
• Degree in Computer Science or related field.

• English speaking: Upper-Intermediate.
  
  Benefits:

  In addition to a great base salary, we offer:

• Funding for conferences, co-working spaces, software licenses, and other work-related expenses
• MacBook if you require one
• Mobile devices if you are involved with mobile development projects
• Flexible working hours and fully remote working without micromanagement
• Modern technology stack
• Time for open source development
• Bonus at the end of the year
  Paid study leave
• Paid English language courses
• 36 company-paid days off per annum
• Access to educational streaming services like Pluralsight
• Input on the development of the company

Our core values:
We are open-minded, humble, respectful, self-driven, and honest, which allows us to create an atmosphere of synergy. Our team is a great fit for those who value self-organization and are passionate about personal growth. If this resonates with you, we’d love to have you join the team.

Come Back Agency supports US software and technology companies by running their hiring process. We work with delivery and leadership teams to define roles, screen candidates, and manage interviews. Successful candidates are hired directly by the company and become part of its team.
 

This position is with a US-based software company providing custom development and AI implementation for North American clients. The team builds and maintains production software, including AI-enabled systems, and works in long-term client engagements. Team members operate as part of an internal, distributed team and collaborate directly with client stakeholders.
 

What you will do

• Develop and maintain backend services on Node.js (NestJS, TypeScript)
• Design and build REST APIs working with PostgreSQL and Prisma
• Implement business logic and integrations with third-party services
• Build authentication and authorization flows
• Improve performance and stability of production systems
• Investigate and fix production issues
• Take part in code reviews and technical discussions
• Communicate directly with US-based clients on technical calls
   

What we are looking for

• 2+ years of commercial backend experience with Node.js 
• In-depth NestJS experience on real commercial projects: modules, guards, interceptors, pipes
• Strong TypeScript skills
• Solid approach to validation and DTOs
• Hands-on experience with PostgreSQL and Prisma
• Practical experience with AWS services
• Docker in day-to-day development
• Redis (caching, queues, sessions, or similar use cases)
• Experience with Node.js Streams
• Good understanding of OOP principles
• Confident use of Git
• Experience using Claude Code or readiness to use it as part of your daily workflow
• Ability to work independently and argue for your technical decisions
• English B2+ for confident spoken communication with US clients
• Full-time availability 16:00–00:00 Kyiv time
   

Important: NestJS experience limited to tutorials, courses, or pet projects is not sufficient for this role. We are looking for commercial backend experience; frontend-only profiles will not be considered. Full-stack developers are welcome if most of their practical experience is on the backend.
 

Nice to have

• Express.js
• Other ORMs (TypeORM, Sequelize) or MongoDB
• JWT, OAuth, RBAC
• WebSockets / Socket.io
• Microservices, message queues, background jobs
• Unit and integration testing
• CI/CD, Kubernetes
• Logging and monitoring
• Payment integrations
   

What we offer

• Fully remote, full-time cooperation
• Stable working hours aligned with the US market: 16:00–00:00 Kyiv time
• Direct cooperation with a US-based software company
• Mentorship from the Head of Node.js
• Paid vacation and sick days
• English lessons and speaking clubs
• No time-tracking software
• Structured and personalized onboarding
• Opportunities for professional growth and increased ownership within the team
• Compensation reviews based on performance
   

Hiring process

1. Introductory interview with Come Back Agency
2. Technical interview with the Head of Node.js: a code review session where you’ll discuss code snippets (no live coding)
3. Final culture-fit interview
4. Offer and onboarding
    

When applying, please briefly mention your years of commercial Node.js experience, NestJS projects you’ve worked on, AWS services you’ve used, and your English level.

You can also apply through our website: comeback.ua.

We’re looking for a Senior Full-Stack Developer with strong Node.js and React experience to join our international team.

This role involves building and scaling applications, working with high-load backend services, and developing frontend functionality. We value clear communication, practical problem-solving, and hands-on experience with AI-assisted development.

What you’ll do:

- Develop and maintain backend services using Node.js and NestJS.
- Build and improve frontend functionality with React.
- Work on application performance, reliability, and scalability.
- Develop and scale message consumers, background workers, and queue-based processing.
- Work with cloud infrastructure and Kubernetes environments.
- Collaborate with the team on technical decisions and implementation.
- Use AI development tools thoughtfully, reviewing generated code for correctness and maintainability.

What we’re looking for:

- 5+ years of professional software development experience.
- Strong expertise in Node.js and NestJS.
- Hands-on experience developing applications with React.
- Experience handling high-load or high-traffic applications.
- Experience working with cloud infrastructure and Kubernetes.
- Experience with RabbitMQ or similar message queue technologies.
- Experience scaling message consumers and background workers.
- Fluent English, with the ability to explain ideas clearly and communicate effectively.
- Practical experience with AI-assisted development and an interest in current AI tools and practices.

Experience in a particular industry is not required - your technical expertise matters most.

Nice to have:

- Experience managing and optimizing MySQL databases with large datasets or high workloads.
- Experience with the ELK stack.

What we offer:

- Long-term collaboration with an international team.
- B2B cooperation with hourly compensation in USD.
- Work on technically challenging applications with a focus on performance and scalability.

Hiring process:

An introductory HR call followed by two technical interviews.
 

Overview 

Come join us as we scale our retail and commerce loyalty platform! PAR Retail is looking for a Senior NodeJS engineer on its expanding product engineering team as we build and grow our Open Commerce enterprise software-as-a-service platform. 

Open Commerce is a technology suite that enables marketing professionals in the fuel & convenience industry to create real-time, hyper-personalized offers and customer interactions across a variety of channels (mobile, web, SMS, and in-person) to drive customer behavior toward a desired goal. 

Our technology bridges financial payment providers, retail fuel pump technology, and customer experience by wrapping low-level standards-compliant integrations with powerful software abstractions on an ultra-modern software platform. Our platform services and applications are built using a broad swath of technologies (Typescript, NodeJS, Ruby, React, and others), interconnected via GraphQL and RabbitMQ, and run in AWS using Terraform, Helm and Kubernetes (via EKS). 

PAR Retail has its headquarters in Philadelphia, Pennsylvania (USA) and leverages a diverse distributed product engineering and operations team across the United States and Ukraine. PAR Retail offers highly competitive compensation and benefits, as well as an engineering-friendly and product-centric culture. On PAR Retail’s Open Commerce team, we embrace a deeply collaborative software product development process where engineering, design, and product collaborate to shape and ship new functionality. 

Successful candidates will enjoy PAR Retail’s friendly and flexible culture, and embrace our relentless drive to excellence and goal of providing the #1 retail marketing platform in the fuel & convenience industry and beyond. 

Responsibilities 

• Working with the team, design and implement new functionality based on product objectives and requirements. 
• Work with the broader product engineering team to plan and coordinate feature and functionality improvements, as well as resolve bugs and execute technical enhancements, that cross-cut large parts of our platform. 
• Work to continually learn, improve technology skills, expand knowledge of the Open Commerce platform technologies, and gain increasing versatility across the breadth of our platform systems. 
• Expand APIs and business logic, and as needed write or revise customer-facing API documentation. 
• Work with our infrastructure team to enable and enhance highly-available, performant, and well-instrumented backend applications and services that run in our customer environments at substantial scale. 

• Support operations and infrastructure teams for issue resolution on relevant Open Commerce applications or services running in production environments. 

   

Qualifications 

• Practical experience building systems in Node.js 
• At least 5 years industry experience or equivalent 
• Experience building and maintaining backend APIs, including design, implementation, evolution, and maintenance 
• Familiarity with TypeScript, or similar modern strongly-typed language 
• Proficiency using both relational and non-relational database technologies 
• Strong understanding and familiarity with CI/CD pipelines and automated testing 
• Basic knowledge Docker and Kubernetes 
• Familiarity with OAuth and JWT 
• Some experience with front-end JS technologies, esp. React or Angular 
• An ability to work in service-based architectures 
• Highly independent and able to effectively self-organize and prioritize work 
• The ability to write clean code, and the discipline to write effective automated unit tests in order to deliver high-quality system improvements 
• An ability to effectively break down larger bodies of work for delivery as a series of small, self-contained changes to the system 
• Excellent spoken and written communication skills 

• BS/MS degree in Computer Science, Engineering, or equivalent years of professional working experience 

   

Bonus Points 

• Experience with Nest.js and/or GraphQL 
• Experience with Ruby on Rails 
• Experience with AWS 
• Experience working in distributed teams 

• Experience in the retail and/or fuel & convenience industries 

   

PAR Retail Offers:

- Long-term employment;

- Competitive compensation with regular performance-based salary and career development reviews;

- Paid vacations and sick leaves;

- Flexible working hours;

- A unique and friendly environment where everyone can explore and learn new technologies.

DBB Software - is a software engineering IT company from Ukraine with a unique point of difference. We provide an exciting concept involving highly trained and vetted remote software developers to provide businesses with everything they need in the information technology space. Whether it’s end-to-end IT or smaller, focused areas and individual projects, we cover it all, and our approach allows us to offer exceptionally competitive pricing.

During 8 years on the IT market we successfully released more than 30 projects and have a wide-geographic of clients in Europe, USA and Canada.

Now we are continuing growing and extending our team so we warmly invite Junior Backend Developer (Node.js) to our team in Dnipro city!

What requirements are important for this role:

-At least 1 year of professional experience with TypeScript, Node.js, express, nest.js;

-Experience with SQL, PL/SQL, preferred experience on MERN stack and next.js;

-Experience with Swagger and/or API documentation tools;

-Experience with git and CI/CD;

-A solid understanding in logging, security concepts;

-A solid understanding of REST, and core JavaScript concepts;

-A solid understanding of relational data and/or non-relational models;

-Experience with performance and optimisation problems and a demonstrated ability to both diagnose and prevent these problems.

What we are expecting from new teammate:

-Effective communication skills: Regularly achieve consensus with peers, and clear status updates;

-Positive and solution-oriented mindset;

-Strong sense of ownership, urgency, and drive;

-An inclination towards communication, inclusion, and visibility;

-Self-motivated and self-managing, with great organizational skills;

- English level - at least Intermediate strong;

-Ability to work in our Dnipro office required.

Working with our team is:

-Flexible schedule;

-Benefit package with paid vacations and sick-leaves;

-Salary reviews in regular basis;

-Autonomy in decision-making, no bureaucracy and pressure;

-People-oriented culture and healthy atmosphere in the team;

-Whole support from company management;

-Office in Dnipro with whole BCP support: generators, power stations and Starlink, only office type of work.

About the Role (Node.js)

We're looking for a curious and motivated Junior Backend Engineer to join our team. You'll be building backend services and REST APIs and working with AWS or Azure infrastructure.

Our projects use Python or C#, but since all of our code is written with AI, we are considering candidates with any OOP language, including JavaScript and Java. What matters is how you think about software: object-oriented design, APIs, and data.

We work in pairs — juniors are always paired with another junior or someone at a similar level, not just for code reviews, but for day-to-day coding, architecture decisions, and problem solving, with seniors close by whenever you need help. This is production work: you'll ship services that customers rely on, with the safety net of another teammate beside you.

The client is US-based, so the team works US business hours; for engineers in Ukraine, this means your working day ends around midnight Kyiv time. This role can be full-time or part-time, depending on your availability.

What You'll Work On

• Backend Services & APIs — build and maintain REST APIs and backend services for client platforms, with clear contracts and automated tests.
• AWS or Azure Infrastructure — work with cloud infrastructure on AWS or Azure, depending on the project.
• CI/CD using GitHub Actions or Azure DevOps pipelines.

Tech Stack

• Backend — Our projects use Python or C#, depending on the engagement. You do not need to know either one — all code is written with AI, and you'll learn the project's framework on the job.
• Cloud — AWS or Azure, depending on the engagement. Nice-to-have, not required.

Working Hours & Format

This role can be full-time or part-time, depending on your availability. It's fully remote. Our client operates on US business hours, so the schedule needs to align with US time zones — for engineers based in Ukraine, your working day will end around midnight Kyiv time.

Requirements

Solid fundamentals in OOP and comfort with at least one OOP language — it does not matter which.

Exposure to AWS or Azure is a plus, but not required — you'll pick up what you need on the job. We care more about your curiosity and attitude than your CV.

Our client is looking for an experienced Lead Backend Engineer to design, build, and scale modern backend systems and cloud-native applications supporting headless and frontend applications.

This is a hands-on technical leadership role combining backend engineering, architecture, DevOps, and team leadership. You will lead a Scrum team throughout the software development lifecycle while contributing directly to backend development, cloud architecture, database and search solutions, and engineering best practices.

The role reports to the Chief Architect.

Responsibilities

Backend Engineering & Architecture

• Lead a Scrum team throughout the SDLC, ensuring project goals are delivered within scope and timelines.
• Design, develop, and maintain scalable backend services using TypeScript, Node.js, and Python.
• Build cloud-native and serverless applications primarily on AWS and Serverless Framework.
• Participate in architectural design and technical strategy for modern backend and service workflows.
• Apply distributed systems, event-driven, API-first, and microservices patterns.
• Lead code reviews and promote maintainable engineering practices.

Database & Search

• Design and optimize MongoDB data models, queries, indexes, and aggregation pipelines.
• Improve database performance, scalability, and cost efficiency in high-volume environments.
• Implement advanced search solutions using Elasticsearch, Atlas Search, Lucene-based engines, and/or vector search.
• Support both conventional and AI-based search workflows.

AWS & Infrastructure

• Design and operate cloud-native solutions using AWS services such as Lambda, ECS, Fargate, SQS, SNS, EventBridge, S3, and VPC.
• Implement Infrastructure as Code using Terraform and/or CloudFormation.
• Contribute to infrastructure initiatives focused on scalability, reliability, security, performance, cost optimization, and disaster recovery.
• Define and maintain CI/CD pipelines supporting automated testing and deployment.

Reliability & Security

• Monitor and improve the reliability, observability, and performance of distributed systems across multiple environments.
• Troubleshoot and resolve complex system and production issues.
• Ensure security and compliance best practices are followed across internal and external services.

Requirements

• 8+ years of professional backend engineering experience building complex, production-grade systems.
• Strong hands-on expertise with Node.js, TypeScript, and Python.
• Extensive experience with MongoDB, including schema design, indexing, query optimization, aggregation pipelines, and performance tuning.
• Strong experience designing and operating serverless and cloud-native architectures on AWS.
• Hands-on experience with Terraform and/or CloudFormation.
• Experience with Elasticsearch, Atlas Search, Lucene-based engines, and/or vector search.
• Strong understanding of distributed systems, event-driven architectures, API-first design, and microservices.
• Experience designing and maintaining CI/CD pipelines.
• Strong understanding of system reliability, observability, performance, security, and scalability.
• Experience leading code reviews and promoting engineering best practices.
• Strong communication skills and ability to lead and collaborate with engineering teams.

Nice to Have

• AWS or related cloud certification(s).
• Experience with AI-based search or vector search technologies.
• Experience working with enterprise SaaS products and distributed systems.
• Experience leading Scrum or engineering teams.
• Bachelor's degree in Computer Science, Information Systems, or equivalent professional experience.

What We Offer

• Competitive market salary.
• Fully remote work.
• Opportunity to design and scale modern backend and cloud-native systems.
• Hands-on ownership of backend architecture and technical direction.
• Work with modern AWS, serverless, database, and search technologies.
• Collaboration with experienced international engineering teams.
• Opportunity to lead a technical team while remaining hands-on.

We are looking for a skilled Backend & Integration Engineer to join our engineering team and support our CTO in implementing, scaling, and maintaining real-time video and data feed integrations with external B2B partners and platforms.

In this role, you will be responsible for connecting our Live Casino studio feeds to partner platforms using real-time data protocols (SSE, REST APIs) and managing ultra-low latency live video streams (RTMP, SRT, HLS).

Key Responsibilities

• API & Data Feed Integration: Implement and maintain reliable client-side integrations with partner APIs via Server-Sent Events (SSE) and RESTful services.
• Stream & State Management: Build resilient, idempotent state-handling mechanisms (de-duplication of events, recovery after disconnects, handling complex game lifecycle events like card rescans, cancellations, and shoe changes).
• Video Ingest & Streaming: Configure, troubleshoot, and optimize live video streams via RTMP / SRT protocols to ensure low latency and high quality (H.264, 1080p@50fps, AAC/Opus).
• Security & Infrastructure: Set up and manage secure connection channels, including mTLS (Mutual TLS) with client certificates, Bearer token authentication, and IP whitelisting.
• Testing & Quality Assurance: Validate integrations against partner synthetic test environments and oversee seamless go-live transitions.

Requirements & Qualifications

• 1+ years of experience in Backend Development using Node.js (TypeScript), Go (Golang), or Python.
• Strong understanding of Real-time Protocols: Server-Sent Events (SSE), WebSockets, and REST APIs.
• Solid experience with Network Security: SSL/TLS, mTLS (Mutual TLS), x509 certificates, Bearer tokens, and IP allowlisting.
• Hands-on experience with Live Video Streaming Protocols: RTMP, SRT, HLS, and tools/encoders like FFmpeg, GStreamer, or OBS.
• Deep knowledge of relational or key-value databases (Redis, PostgreSQL) for state retention, caching, and event de-duplication.
• Familiarity with video encoding standards (H.264, keyframe intervals, bitrate optimization, audio codecs like AAC/Opus).
• Experience writing production-grade, fault-tolerant code with automated reconnect mechanisms (exponential backoff, heartbeat watchdogs).
• Good written English for technical communication in partner chats and reading API documentation.

Nice to Have

• Prior experience in the iGaming / Live Casino / Betting domain.
• Experience with media servers (SRS, Nimble Streamer, Node Media Server, or Wowza).
• Understanding of WebRTC or ultra-low latency streaming technologies.

What We Offer

• Competitive compensation based on skills and experience.
• Fully remote work environment with flexible working hours.
• Direct collaboration with the CTO and technical leadership.
• Opportunity to work with high-concurrency, low-latency streaming infrastructure.

We are looking for a skilled Backend & Integration Engineer to join our engineering team and support our CTO in implementing, scaling, and maintaining real-time video and data feed integrations with external B2B partners and platforms.

In this role, you will be responsible for connecting our Live Casino studio feeds to partner platforms using real-time data protocols (SSE, REST APIs) and managing ultra-low latency live video streams (RTMP, SRT, HLS).

Key Responsibilities

• API & Data Feed Integration: Implement and maintain reliable client-side integrations with partner APIs via Server-Sent Events (SSE) and RESTful services.
• Stream & State Management: Build resilient, idempotent state-handling mechanisms (de-duplication of events, recovery after disconnects, handling complex game lifecycle events like card rescans, cancellations, and shoe changes).
• Video Ingest & Streaming: Configure, troubleshoot, and optimize live video streams via RTMP / SRT protocols to ensure low latency and high quality (H.264, 1080p@50fps, AAC/Opus).
• Security & Infrastructure: Set up and manage secure connection channels, including mTLS (Mutual TLS) with client certificates, Bearer token authentication, and IP whitelisting.
• Testing & Quality Assurance: Validate integrations against partner synthetic test environments and oversee seamless go-live transitions.

Requirements & Qualifications

• 3+ years of experience in Backend Development using Node.js (TypeScript), Go (Golang), or Python.
• Strong understanding of Real-time Protocols: Server-Sent Events (SSE), WebSockets, and REST APIs.
• Solid experience with Network Security: SSL/TLS, mTLS (Mutual TLS), x509 certificates, Bearer tokens, and IP allowlisting.
• Hands-on experience with Live Video Streaming Protocols: RTMP, SRT, HLS, and tools/encoders like FFmpeg, GStreamer, or OBS.
• Deep knowledge of relational or key-value databases (Redis, PostgreSQL) for state retention, caching, and event de-duplication.
• Familiarity with video encoding standards (H.264, keyframe intervals, bitrate optimization, audio codecs like AAC/Opus).
• Experience writing production-grade, fault-tolerant code with automated reconnect mechanisms (exponential backoff, heartbeat watchdogs).
• Good written English for technical communication in partner chats and reading API documentation.

Nice to Have

• Prior experience in the iGaming / Live Casino / Betting domain.
• Experience with media servers (SRS, Nimble Streamer, Node Media Server, or Wowza).
• Understanding of WebRTC or ultra-low latency streaming technologies.

What We Offer

• Competitive compensation based on skills and experience.
• Fully remote work environment with flexible working hours.
• Direct collaboration with the CTO and technical leadership.
• Opportunity to work with high-concurrency, low-latency streaming infrastructure.

Who we are     

We are a Ukrainian multiproduct company for more than 500.000 clients from 120 countries.  

Since 1997, we have been streamlining data workflows for professionals and teams with our intuitive and efficient software products. We’re committed to enhancing our customers' experience across the globe by minimizing data-related tasks and enabling them to focus on more inspiring goals. Whether it’s Fortune-100 companies or individuals, we provide a customer-centric approach, delivering high-quality solutions and exceptional support.  
   

Product that needs your engagement     

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

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

Your future team of professionals     

You will lead and work closely with the Mobion Backend Team, currently consisting of four Backend Developers. In this role, you will combine hands-on engineering with technical leadership, helping the team make sound architectural decisions, improve engineering practices, and deliver reliable backend solutions. 

We value ownership, curiosity, collaboration, and open feedback. You will play a key role in mentoring developers, driving technical improvements, and creating an environment where the team can grow while solving real product and business challenges. 

Your future challenges and opportunities 

Opportunities 

• Lead the technical evolution of a business-critical backend platform used across multiple countries.  
• Shape backend architecture, engineering standards, and technical practices across the team.  
• Modernize a mature Node.js/TypeScript platform while continuing to deliver business value.  
• Mentor Backend Developers and introduce modern engineering practices, including AI-assisted development. 
   

Challenges 

• Balance continuous product delivery with gradual modernization of a complex production system.  
• Reduce technical debt and architectural coupling without disruptive rewrites.  
• Strengthen automated testing, observability, reliability, security, and CI/CD practices.  
• Lead technical change while aligning decisions across Product, QA, DevOps, Architecture, and Engineering teams. 
   

Impact you will make  

As Lead Backend Developer, you will take technical ownership of Mobion’s backend platform, combining hands-on development with architecture, engineering improvements, and team leadership. 

• Lead backend architecture and technical decision-making for the Mobion platform.  
• Combine hands-on Node.js/TypeScript development with technical leadership of the Backend Team.  
• Drive the gradual modernization of legacy components while maintaining platform stability and delivery speed.  
• Improve system performance, reliability, observability, automated testing, and CI/CD practices.  
• Mentor Backend Developers, support technical growth, and strengthen engineering standards across the team.  
• Collaborate with Product, QA, DevOps, and Software Architecture to turn business needs into scalable technical solutions. 
   

Skills we are looking for     

• 5+ years of hands-on backend product development experience with strong proficiency in Node.js and TypeScript.  
• 2+ years of experience as a Team Lead, combining hands-on development with team leadership 
• Strong experience with SQL and NoSQL databases, including PostgreSQL/MySQL and Redis.  
• Experience designing and evolving distributed systems, REST/WebSocket APIs, and event-driven integrations.  
• Experience modernizing legacy systems through incremental refactoring, automated testing, and CI/CD practices.  
• Solid experience with cloud-native production environments, including Azure, Kubernetes, observability, reliability, and application security.  
• Experience driving technical improvements across architecture, code quality, and engineering practices, combined with strong mentoring and leadership skills. 
• Experience or strong practical interest in AI-assisted engineering and spec-driven development.  
• Experience with mobility, logistics, or transportation products is a plus. 

Benefits you get 

• Maintain your work-life balance 

Manage your own working hours with our flexible schedule 

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

No overtimes required 

• Hybrid type of cooperation 

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

• Stay healthy 

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

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

• Grow with us 

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

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

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

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

• Stand with Ukraine! 

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

We are a perfect match if you share our values 

We are professionals in our field. 

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

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

We create a calm and friendly atmosphere within the company. 

We value the freedom of open and transparent communications. 

Radical honesty is embedded in the foundation of our culture. 

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

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

Our Hiring Process 

• Recruitment Interview 
• Technical Interview 
• Case Interview 
• Offer Call 

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

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

We’re looking for an AI-forward Backend Developer to help build a platform focused on international payments, crypto infrastructure, and blockchain integrations.

The platform integrates external payment and financial service providers such as Bridge, works with crypto and stablecoin-related services, and supports on-chain interactions. The backend is primarily API-driven, connecting external systems, processing transactions and events, and storing application data in MongoDB.

We value engineers who are passionate about developer platforms, enjoy solving integration challenges, and use Claude and other AI-powered tools to accelerate development.

Responsibilities

• Develop and maintain backend services using Node.js, TypeScript, and Express.js.
• Design and implement REST APIs and integrations with third-party services.
• Integrate payment infrastructure providers such as Bridge and similar fintech or crypto platforms.
• Build backend workflows for international payments, stablecoins, and crypto-related operations.
• Work with blockchain APIs, on-chain transactions, and transaction status monitoring.
• Design and maintain MongoDB schemas, data models, and persistence logic.
• Implement webhooks, background jobs, asynchronous workflows, and reliable error handling.
• Ensure data consistency and reliability when processing payment and blockchain events.
• Deploy, maintain, and monitor backend applications and services on AWS.
• Apply security best practices when handling sensitive financial data and transaction workflows.
• Use Claude and other AI-powered development tools in daily engineering tasks.
• Collaborate with the team on architecture, implementation, and technical improvements.

Requirements

• Strong experience with Node.js and TypeScript.
• Practical experience building backend services with Express.js.
• Experience with MongoDB and database design.
• Proven experience integrating third-party APIs into production applications.
• Good understanding of REST APIs, webhooks, authentication, and asynchronous processing.
• Experience deploying and maintaining applications on AWS.
• Understanding of crypto, blockchain fundamentals, and on-chain transactions.
• Familiarity with financial transaction workflows, error handling, and data consistency.
• Hands-on experience with Claude or similar AI coding tools.
• Ability to work independently, troubleshoot complex integrations, and take ownership of backend features.

Nice to Have

• Experience with fintech, international payments, or cross-border payment systems.
• Previous experience integrating Bridge or similar payment and crypto infrastructure providers.
• Knowledge of stablecoins, crypto wallets, blockchain APIs, and transaction signing.
• Familiarity with Ethereum and EVM-compatible networks.
• Experience with smart contracts, blockchain event indexing, or transaction monitoring.
• Familiarity with AWS services, queues, background workers, and distributed systems.
• Experience building developer platforms, public APIs, or SDKs.
• Basic familiarity with React or Next.js to support full-stack collaboration when needed.

Who We’re Looking For

We’re looking for a practical, AI-first backend engineer who uses Claude to accelerate implementation, explore solutions, debug issues, and improve code quality without blindly relying on generated code.

You enjoy building backend systems that connect external APIs, process financial data, and interact with blockchain infrastructure. You understand the importance of security, reliability, and proper error handling when working with payment systems and on-chain transactions.

You’re comfortable working in a lean team, making technical decisions, and delivering straightforward solutions without unnecessary complexity. A passion for developer platforms and making API integrations easier for other developers is a strong advantage.

What We Offer

• The opportunity to build a product at the intersection of international payments, crypto, and blockchain.
• An AI-first development environment with tools such as Claude.
• A lean team, direct communication, and technical ownership.
• The opportunity to work on real-world payment integrations and crypto infrastructure.

If you enjoy backend engineering, API integrations, blockchain technology, and AI-assisted development, we’d love to hear from you.