Jobs Fullstack

Requirements:

• 1–3 years of commercial development experience;
• Strong knowledge of JavaScript and TypeScript;
• Experience with Node.js and/or Bun.js;
• Experience with Vue.js is preferred; React is also acceptable;
• Good understanding of full-stack web application development;
• Understanding of WebSockets and real-time communication;
• Experience working with PostgreSQL;
• Good understanding of asynchronous programming;
• Confident working with the Git version control system;
• Strong analytical and problem-solving skills;

• Intermediate level of English.

   

Would be a plus:

• Experience with modern backend architecture and API design;
• Experience working with ORMs or query builders;
• Familiarity with deployment, CI/CD, and cloud environments;
• Experience building scalable products or SaaS platforms.

• Experience using AI tools for coding to improve productivity;

   

Responsibilities:

• Develop and maintain full-stack product features with attention to quality and performance;
• Participate in end-to-end development, from idea to production;
• Build both backend and frontend parts of the application;
• Work with real-time features using WebSockets;
• Deliver features quickly and efficiently;

About the Platform

Binaryx.com is a Web3 platform focused on RWA tokenization (Real-World Assets), enabling users to access tokenized assets through a modern blockchain infrastructure.
The platform backend is primarily hosted on Google Cloud, while the blockchain layer is built on Polygon, with smart contracts written in Solidity.

The roadmap for the next six months is focused mainly on:
 • stabilizing several existing features
 • building a new secondary market
 • developing a new product page
 • building a checkout flow

This role is focused primarily on hands-on development of new features, rather than team management. DevOps responsibilities are not expected, as the infrastructure is managed separately.

Technical Requirements
 • Commercial development experience with the platform’s tech stack
 • Strong knowledge of JavaScript / TypeScript
 • Frontend experience with React and Next.js
 • Backend experience with PostgreSQL; Nest.js is a plus
 • Understanding of Web3 architecture and blockchain ecosystems
 • Basic understanding of Solidity and smart contracts
 • Experience working with REST APIs

Responsibilities
 • Development of new platform features
 • Improving and maintaining existing functionality
 • Collaboration with the product and engineering team

Working Conditions

• Schedule: 9:00-18:00 CET
• Format: remote
• Probation period: 2 months

Payset, a UK-based online international payments solution authorized by the UK Financial Conduct Authority (FCA) as an Electronic Money Institution (EMI), offers multi-currency accounts and currency exchange to businesses worldwide. We save clients time and money and open up new regions and possibilities for their business by simplifying how they pay and get paid locally and internationally. Our mission is to foster enduring client relationships while refining our product technology and expanding into new markets. If you have experience in fintech or a related field, we’d love to have you join our fast-growing company!

The Opportunity

As we continue to grow, we seek a dynamic, experienced Senior Software Engineer to join our team. The ideal candidate is someone who thrives in a fast-paced environment and enjoys working in small, agile product teams. You’ll be surrounded by smart, ambitious, and awesome coworkers who value focus time and getting things done. We leverage a state-of-the-art tech stack, including PostgreSQL, MongoDB, React, NodeJS, GraphQL, Cypress, Jest, AWS, and Docker to build an amazing product.

What you’ll do:

• Develop and ship user-facing features with TypeScript and Node.js, React.js, delivering clean, maintainable code that follows modern component patterns and accessibility guidelines.
• Integrate frontend applications with backend services, defining clear data contracts and error-handling conventions that keep the UX seamless.
• Design and optimize database schemas and queries for PostgreSQL and MongoDB.
• Build and own microservices and REST APIs, ensuring they are robust, scalable, and maintainable.
• Implement and optimize REST API Gateway, GraphQL, and other relevant technologies to enhance application performance and scalability within the AWS environment.
• Utilize Docker for containerization to ensure scalability and reliability of backend services.
• Stay updated with the latest industry trends and advancements in software development, applying best practices to our processes.

You will thrive in this role if:

• You often take the initiative and seek ownership of your work.
• You are a proactive problem solver, always seeking innovative solutions and continuously improving processes.
• You have strong communication and interpersonal skills, with the ability to collaborate effectively with cross-functional teams.
• You thrive in a collaborative environment, valuing team input and ensuring alignment with project goals.
• Experience in the Fintech industry software is a plus.
• You are fluent in English.

How we work

• Small and agile product teams
• Smart, ambitious, and awesome coworkers.
• No unnecessary meetings — we value focus time.
• Our tech stack includes state-of-the-art tools such as PostgreSQL, MongoDB, React, NodeJS, GraphQL, Cypress, Jest, AWS, and Docker.

Want some more context?

• Dive into the heart of our groundbreaking solutions by exploring our flagship product pages: Whether it’s our versatile multi-currency account or our dynamic currency exchange platform.
• Get acquainted with the faces behind our success by meeting our exceptional leadership team.
• Explore a treasure trove of insights and updates by delving into our engaging blog posts.

What makes us Payset:
At Payset, we embody a unique ethos that sets us apart. Working here means embracing an entrepreneurial spirit, a thirst for knowledge, and a commitment to enjoying what you do with true ownership of your work.

Our team spans the globe, bringing together diverse talents united by a shared passion for delivering unparalleled experiences to our customers. We strive to work with the best talent in the industry, fostering an environment where excellence thrives. In addition to the opportunity to collaborate and learn from top-notch colleagues, we offer a range of benefits designed to support our team members’ well-being and professional growth.

Diversity
At the heart of our team lies a belief in the strength of diversity. It’s not just a goal—it’s about embracing our differences to fuel our collective power. We work to create an inclusive and fair environment where every individual’s unique perspective boosts our innovation. By valuing our diversity, we foster a sense of belonging where everyone plays a vital role in our shared success.

Ready to work on cutting-edge solutions in the telecom domain? We are looking for a Junior Full Stack Developer to join our team and contribute to a high-impact project in data management and system integration.

CUSTOMER
Our customer is a global leader in Information and Communication Technology (ICT), serving telecom service providers worldwide. They deliver innovative products and services for mobile and fixed communication networks, radio systems, and transmission infrastructure. Recognized for driving innovation in connectivity, the company enables next-generation communication solutions and operates in over 100 countries.

PROJECT
The team will work on a Product Information Service — a scalable, cloud-native system designed to manage product-related data and enable integration across multiple systems. The solution focuses on data management, APIs, and system integration, ensuring reliable and efficient information flow between platforms.

Key Technologies: Python, React, PostgreSQL, Next.js

RESPONSIBILITIES:

• Develop and support backend and frontend parts of the Product Information Service
• Implement REST APIs and help integrate them with other systems
• Work with PostgreSQL databases (design and basic maintenance)
• Build simple and responsive user interfaces using React
• Write unit and basic end-to-end tests to support code quality
• Take part in code reviews and follow team development practices
• Create and maintain technical documentation
• Collaborate with the customer via conference calls and meetings

• Engage in SAFe Agile ceremonies including estimation, grooming, and planning sessions

   

REQUIREMENTS:

• 1.5+ years of professional software development experience using Python
• Experience in implementing RESTful APIs and contributing to their design
• Hands-on experience with PostgreSQL
• Strong skills in React for building responsive UIs
• Understanding of backend system design principles

• Intermediate level of English or higher

   

WILL BE A PLUS:

• Experience with Next.js

   

PERSONAL PROFILE:

• Strong problem-solving skills and attention to detail
• Ability to work collaboratively in a distributed team environment
• Proactive communication and willingness to engage with stakeholders
• Adaptability to changing requirements and priorities

Requirements:

• 2+ years of experience with PHP (hands-on development).

• Solid experience with the Laravel framework.

• Knowledge of JavaScript (bonus if you’ve used ES2015+).

• Good HTML & CSS knowledge with 2+ years of experience in layout development.

• Experience with databases (e.g., MySQL, MongoDB, or others).

• Familiarity with package managers (composer, npm, yarn).

• Understanding of OOP and MVC architecture.

• English: Intermediate level (focus on written communication).

Nice to Have (but not required):

• Experience with modern tools: PHP8+, SASS, TypeScript, Webpack, Babel.

• Familiarity with version control systems like Git or SVN.

Responsibilities:

• Develop new applications, features, services, and APIs using Laravel and JavaScript.

• Create and maintain responsive, high-quality layouts using HTML and CSS.

• Stay up-to-date with new technologies, trends, and best practices in web development.

• Collaborate with team members to ensure efficient and high-quality internal processes.

• Participate in technical discussions and code reviews, applying critical thinking and contributing to the team’s growth.

• Focus on delivering clean, maintainable code with an emphasis on simplicity and usability.

What We Offer:

✔️ Stable and competitive compensation with regular performance-based reviews.

✔️ Opportunities for career growth and continuous skill development.

✔️ Work on innovative projects using cutting-edge technologies.

✔️ A dynamic environment with minimal bureaucracy to focus on delivering results.

✔️ Professional bookkeeping and tax support.

✔️ Compensation for external English language training.

Why Join Us?

We’re a dynamic team passionate about creating impactful projects. At CUDEV, you’ll grow professionally while collaborating with experienced colleagues in an environment that fosters creativity, innovation, and continuous learning.
 

We’re looking for a Full-Stack Developer who doesn’t just write code - but builds products, solves real problems, and takes ownership.

If you enjoy working across the stack, shipping features end-to-end, and seeing the direct impact of your work - this role is for you!
 

💡 What you’ll be working with
 

• TypeScript as a core language
• React + Redux on the frontend
• Node.js + NestJS on the backend
• PostgreSQL for data management
• REST APIs and tools like Postman
• Docker & AWS for infrastructure

Nice to have:

• React Native / Firebase / Expo
   

🔥 What you’ll do

• Build features from idea → production
• Improve and scale an existing product
• Refactor and keep the codebase clean and maintainable
• Integrate third-party services and APIs
• Work side-by-side with PMs, QAs, architects, and developers

• Be part of releases and see your work go live

   

🌱 What matters to us

• You’re proactive and take ownership
• You care about clean, scalable code
• You’re comfortable communicating in English (Upper-Intermediate+)
• You’re always looking to learn and grow

🎯 What you’ll get

• Real impact - your work won’t be lost in layers of bureaucracy
• A team that values initiative, not micromanagement
• Space to grow both technically and professionally
• Flexibility - we tailor benefits to what actually matters to you

🚀 Join RiskSeal as a Fullstack Software Engineer for our platform!

We’re building a cross-browser Fingerprint SDK and a high-performance backend for fraud detection and risk analysis. We’re looking for a Software Engineer who enjoys working close to the browser, handling large-scale data, and solving non-trivial engineering problems.

Responsibilities

• Develop and maintain a cross-browser Fingerprint SDK using Vanilla JavaScript/TypeScript, focused on performance, accuracy, and resilience against ad blockers and privacy restrictions
• Build backend services with Node.js (Express) to process and analyze large volumes of collected data
• Work with ClickHouse for analytical workloads and MySQL for transactional data
• Design and optimize raw SQL queries for high-performance data access
• Contribute to fraud detection and risk analysis systems by identifying patterns and anomalies in data
   

Requirements

• 3+ years of experience with JavaScript/TypeScript and raw Node.js (Express)
• Strong experience with JavaScript in the browser
• Experience writing and optimizing raw SQL queries
• Familiarity with high-volume data processing or analytics systems
• Bonus: experience with fingerprinting, anti-fraud systems, or cybersecurity

Nice to Have

• Experience dealing with ad blockers, tracking prevention (Safari/Firefox), or similar constraints
• Background in security, fraud detection, or risk analysis

What We Offer

• A collaborative and dynamic work environment with minimal bureaucracy, allowing for quick decision-making and efficient workflows.
• Opportunities for professional growth and development.
• The chance to work on cutting-edge technologies and challenging projects.
• Competitive salary and benefits package.
• Flexibility in work hours and location.

Interview process (2 steps):

Step 1 — Recruiter screening

Step 2 — Technical interview

📩 Ready to Join?
Send your resume, and let’s achieve great results together! 
 

We are looking for a Strong Middle .NET Full-Stack Engineer to join our team and contribute to the development of a large-scale, multi-tenant reputation management platform for medical practices in the US. The platform handles survey delivery, data collection, reporting & analytics, and integrations with external systems (Azure ecosystem, HubSpot, Google APIs, etc.). The ideal candidate is a proactive engineer with strong experience in building scalable web applications, clean architecture principles, and front-end development using modern Angular.

About the project:

You will be a part of the American and Ukrainian teams engaged in the enhancement and improvement of a SaaS dealing with sustainable reputation management of doctors in the USA. The project is built in .NET, and we are transferring to Angular and to Azure; thus, you will have an excellent opportunity to pump your knowledge into new technologies. The multi-tenant system uses Web, Google, and other APIs, Windows services, and Git.

Requirements:

• 4+ years of commercial experience in .NET development.
• Experience working as a full-stack developer in production projects.
• Strong knowledge of C# and .NET / .NET Framework 4.8+.
• Experience with ASP.NET Core / Web API, dependency injection, and middleware.
• Experience with Entity Framework / Dapper, writing efficient SQL, and working with relational databases.
• Understanding of clean architecture, SOLID principles, immutability practices, and code quality standards.
• Experience building Azure Functions, background jobs, and integrations with external systems.
• Experience with Microsoft SQL Server,
• Application Insights, Key Vault, Storage, and VPN-based networking are a plus.
• Experience with unit testing (xUnit, NUnit, or similar).
• Experience with Angular (v12 or higher). (Experience with Angular migration is a plus.)
• TypeScript, RxJS, component-based architecture.
• HTML/CSS, Bootstrap, Kendo UI
• Experience building responsive and cross-browser compatible UI.
• Git, Trunk-Based development, code reviews, pull request best practices.
• Familiarity with CI/CD processes (Azure DevOps or similar).
• Ability to use AI tools (Claude Code, GitHub Copilot, ChatGPT, Cursor AI testing utilities,\AI-assisted refactoring tools).
• Experience with integration tests is a plus.
• Upper-Intermediate English (both written and spoken).

Responsibilities:

• Develop new features and enhance existing functionality in a multi-tenant SaaS platform.
• Work across both front-end (Angular) and back-end (.NET) parts of the system.
• Participate in architecture discussions and follow established best practices.
• Implement integrations with external APIs (Google, HubSpot, EMR systems like eCW).
• Write clean, testable, maintainable code following team guidelines.
• Participate in code reviews and improve overall code quality.
• Collaborate with team and product stakeholders.

Technologies we are currently working with:

Back end: ASP.NET Web Api, MVC, .NET Framework 4.8.1

DB: MS SQL and T-SQL

Front end: AngularJS, Angular 17+, Kendo UI

Environment: Azure DevOps for the CICD

We offer:

• Competitive salary
• Official employment, paid sick leave, 20 days of paid vacation
• Free English lessons  
• Flexible work schedule  
• Official Ukrainian holidays are non-working days  
• Paid courses and certifications  
• Сoach / psychologist consultation  
• Workshops  
• Career development plan
• Mentoring Education  
• Medical Health Insurance

Team: Lead.NET developer, 4 Middle .NET Full Stack devs, 1 DB developer, 2 Front-end developers

Schedule: 5/2, 8-hour working day (40 hr per week), flexible schedule. Because part of the team and stakeholders are located in the US (ET and CT time zones), the candidate should be able to accommodate occasional meetings or collaborations that overlap with these time zones (usually 16:00-19:00 EET). No late meetings and overtimes.  

Hiring process: HR interview +tech specialists + client interview

When you choose us, you’re choosing a company that values innovation, invests in its employees, and provides a supportive and engaging work environment. Join us in shaping the future of technology!

Need more information? Welcome!

We are looking for a skilled and mature Software Engineer to join a stable startup based in New York dedicated to developing cutting-edge browser security solutions. Our mission is to provide users with a secure and private online experience. We are a close-knit team of passionate individuals who thrive on creativity and collaboration. As we continue to grow, we are seeking talented individuals to join us in building a safer digital future.

We are seeking engineers who are passionate about building innovative solutions and high-quality software. Our ideal candidate works diligently to solve complex problems, appreciates a culture of learning and collaboration, and is invested in the future of security.

You will play a crucial role in enhancing the security and privacy features of the product, ensuring a seamless and protected online experience for our users.

Requirements:

• Bachelor's degree in Computer Science, related field, or equivalent practical experience.
• 2+ experience as a Software Engineer with experience in TypeScript, Fastify, NodeJS, and Next.js.
• Solid understanding of web security principles and best practices.
• Experience with browser extensions and security software products is a plus.
• Strong problem-solving skills and attention to detail.
• Excellent communication and collaboration skills in a remote work environment.

Responsibilities:
 

• Collaborate with cross-functional teams to design, develop, and deploy high-quality software solutions for browser security.
• Write clean, maintainable, and efficient code using TypeScript, Node.js, and Next.js.
• Conduct code reviews to ensure code quality and adherence to coding standards.
• Work closely with product managers and UX/UI designers to implement new features and improvements.
• Identify and address performance bottlenecks, security vulnerabilities, and other issues proactively.
• Participate in the agile development process, including sprint planning, daily stand-ups, and retrospectives.

We thank you to all those who apply, however, there is a possibility from our side, of not responding to some candidates who do not match the requirements, due to a large number of applicants. Thank you for your understanding.

We Offer:

• Medical Insurance in Ukraine and Multisport program in Poland.
• Offices in Ukraine (Kharkiv) and Poland (Wroclaw) or Remote.
• Paid vacation, sick leaves, and official holidays.
• Legal & Accounting services.
• The company provides all necessary equipment.
• English classes and Education reimbursement.

Join a Team Redefining Modern Banking Technology!

Our client is a Swiss bank focused on delivering advanced online trading and financial services. Unlike traditional financial institutions heavily dependent on legacy systems, this bank invests in a lean, modern, and continuously evolving technology stack.

What the Project Is About
The team is responsible for all post‑market Forex operations, ensuring that trading activities are accurate, consistent, and properly reconciled after the end of each market day.
One of the latest initiatives delivers near real‑time reconciliation of trade data from multiple sources, including Coinbase, Bitstamp, and Kraken. The solution enables live monitoring of risk exposure, especially during external platform downtimes or degraded availability.

Technology & Engineering Culture
We continuously evolve our systems toward:
* Atomic, independently deployable microservices
* Self‑contained applications with clear ownership
* Dockerized environments
* Automated CI/CD pipelines
Engineering decisions focus on reliability, transparency, and scalability, supporting business‑critical banking systems.

How We Work
Scrum teams of 5-8 cross‑functional engineers. Each team member contributes to both backend and frontend components.

Daily collaboration with client stakeholders through:
* Stand‑ups
* Refinement and design sessions
* Status and planning meetings
Agile best practices applied across delivery

Primary communication tools:
* Microsoft Teams
* Outlook and internal collaboration platforms

What We Offer
+ Professional growth
Local trainings, workshops, and on‑demand webinars
Company‑funded conferences and certifications
+ Competitive compensation
Annual review based on performance and professional development
+ Healthy work-life balance
Team buildings and corporate events
Hackathons and innovation initiatives
A culture that values sustainable delivery

If you are proactive, creative, and motivated by building robust banking systems with real business impact, you will contribute directly to improving both product quality and engineering practices.
Join us and help shape modern banking solutions.

Responsibilities

Design and develop product features end‑to‑end, covering frontend, backend, and data layer

Develop reusable, maintainable, and well‑tested code following team standards

Write and maintain unit, integration, and E2E tests to ensure reliability and scalability

Participate in code reviews, provide constructive feedback, and improve overall code quality

Collaborate with other engineers to clarify requirements and propose technical solutions

Take ownership of assigned features from requirements refinement to production deployment

Actively participate in Scrum events (planning, refinement, reviews, retrospectives), including direct communication with the client

Identify and address technical debt within owned areas of the codebase

Skills

Must have

At least 3+ years of proven experience in a Software Developer/Engineer position [up to 1 year of work with Web Development stack]

Java core, Java 11-21 features

Proven knowledge of ReactJS, Redux

OOP/OOD knowledge, Design Patterns

Unit testing frameworks (JUnit, Mockito)

Integration tests

Spring framework, IOC

RESTful services

SQL knowledge, any RDBMS

CI tools experience

Nice to have

Education: Bachelor's / Master's degree in computer science or computer engineering

Experience in finance/banking business domain

Unix usage experience

Kafka

Join a Team Redefining Modern Banking Technology!

Our client is a Swiss bank focused on delivering advanced online trading and financial services. Unlike traditional financial institutions heavily dependent on legacy systems, this bank invests in a lean, modern, and continuously evolving technology stack.

What the Project Is About
The project focuses on building and evolving a large‑scale trading platform used by a wide range of clients - from private investors to active traders.
The platform enables:
* Trading across multiple financial instruments: Shares, ETFs, Options, Futures, Funds, Bonds, CFDs
* Support for complex order types: Market, Limit, FoK, OCO, Trailing, and more
* Order Routing Systems (ORS) that intelligently route trades to the correct broker and marketplace
* FIX‑based integrations with multiple brokers and exchanges
* Direct connectivity and maintenance for key markets: SIX, Eurex, Bern, Scoach
* Tools for internal Derivatives teams to manually manage and recover orders when needed
* Accurate commission calculation and management per order

The platform is business‑critical and operates under strict performance, reliability, and correctness requirements, serving as the backbone of the client's trading ecosystem.

Technology & Engineering Culture
We continuously evolve our systems toward:
* Atomic, independently deployable microservices
* Self‑contained applications with clear ownership
* Dockerized environments
* Automated CI/CD pipelines
Engineering decisions focus on reliability, transparency, and scalability, supporting business‑critical banking systems.

How We Work
Scrum teams of 7-8 cross‑functional engineers. Each team member contributes to both backend and frontend components.

Daily collaboration with client stakeholders through:
* Stand‑ups
* Refinement and design sessions
* Status and planning meetings
Agile best practices applied across delivery

Primary communication tools:
* Microsoft Teams
* Outlook and internal collaboration platforms

What We Offer
+ Professional growth
Local trainings, workshops, and on‑demand webinars
Company‑funded conferences and certifications
+ Competitive compensation
Annual review based on performance and professional development
+ Healthy work-life balance
Team buildings and corporate events
Hackathons and innovation initiatives
A culture that values sustainable delivery

If you are proactive, creative, and motivated by building robust banking systems with real business impact, you will contribute directly to improving both product quality and engineering practices.
Join us and help shape modern banking solutions.

Responsibilities

Design and develop complex product features end‑to‑end, covering frontend, backend, and data layer

Take ownership of larger functional areas or services, ensuring their reliability, performance, and scalability

Contribute to technical design and architectural decisions, including evaluation of trade‑offs and long‑term impact

Develop reusable, maintainable, and well‑tested code following team standards and best practices

Write and maintain unit, integration, and E2E tests to ensure system stability and confident releases

Lead and moderate code reviews, set quality standards, and support the team in complex technical cases

Collaborate with other engineers, product managers, and other stakeholders to shape technical solutions from vague or evolving requirements

Take responsibility for features from early discovery and solution design to production rollout and post‑release support

Identify, prioritize, and systematically reduce technical debt across the codebase, not limited to owned features

Mentor and coach less experienced engineers, supporting their technical and professional growth

Actively participate in Scrum events and client communication, contributing not only status but technical insights and recommendations

Participate in hiring activities, including technical interviews and candidate assessment

Skills

Must have

At least 5 years of recent, proven experience working with Java in a Software Developer/Engineer role

Strong knowledge of Java (11+), core concepts, and modern language features

Solid understanding of OOP/OOD principles and design patterns

Experience with microservices architecture: design, implementation, support, and evolution

Spring Framework (Spring Boot, Spring MVC, Spring Data/JPA)

Design and implementation of RESTful APIs

Unit testing frameworks (JUnit, TestNG, Mockito)

SQL and experience with relational databases (PostgreSQL or Oracle is a plus)

Experience with Git or other distributed version control systems

Understanding of containerization (Docker); CI/CD experience is a plus

Willingness and readiness to work with ReactJS, Redux, TypeScript, HTML, and CSS from day one, with the ability to quickly acquire and apply these skills in daily development

Nice to have

Bachelor's or Master's degree in Computer Science, Computer Engineering, or a related field

Experience working in finance or banking domain (enterprise‑scale systems, regulated environments is a plus)

Experience working in Unix/Linux environments

Hands‑on experience with ReactJS, Redux, TypeScript, HTML, and CSS (not required, but will significantly speed up onboarding)

Your Go experience caught my eye! We’re building a team for an international CPaaS platform that powers messaging for AliExpress and 500+ global brands. And looking for a Full Stack Engineer (Go + React). 15+ years on market, flexible remote setup, strong team.

We are looking for a Senior Full Stack Engineer who is comfortable working on high-load, distributed systems and making architectural decisions, not just implementing tasks.

You will work on a CPaaS/CCaaS platform handling messaging and voice communication at scale. This is not a typical CRUD product: you’ll deal with real-time flows, external integrations, billing complexity, and systems where design mistakes surface quickly in production. You will be expected to take ownership from design to delivery and challenge assumptions when needed.

Main Responsibilities

– Design and implement new platform capabilities across backend and frontend (not just “features” but system-level improvements)

– Contribute to architecture decisions in a microservices environment (Go-based services, event-driven patterns, APIs)

– Build and evolve React-based interfaces used by enterprise customers and internal teams

– Work on integrations with external vendors (messaging providers, voice, billing systems)

– Investigate production issues in a high-scale environment and drive them to resolution—not just patch them

– Participate in technical discussions, trade-off analysis, and system design reviews

– Occasionally lead initiatives or own a domain end-to-end

Mandatory Requirements

– 4+ years of real production experience as a Full Stack Engineer

– Strong backend expertise with Go (3+ years), not just syntax, but concurrency, performance, and system design

– Solid frontend experience with React + TypeScript (2+ years)

– Experience building or maintaining distributed systems / microservices

– Good understanding of data modeling (SQL + NoSQL) and when to use each

– Ability to debug complex issues across services (not limited to your own code)

– Comfortable working in an environment where requirements evolve and not everything is predefined

Will be a plus

– Experience with real-time systems, messaging, or telecom domains

– Familiarity with event streaming (Kafka or similar)

– Experience with cloud platforms (GCP preferred)

– Exposure to billing systems or high-throughput APIs

What you get

– Work on systems that actually operate at scale and have real business impact

– A team where senior engineers are expected to influence architecture, not just execute

Remote work

We offer

– Your Wellness: Access to mental health programs, comprehensive medical insurance, and a sports card

– Your Happiness: Enjoy the company of cool teammates, a friendly atmosphere, a strong mentorship, and a variety of bonuses & corporate gifts

– Your Development: Benefit from free educational events & courses, and English classes with native speakers

– Your Career: Focus on your professional development in a supportive environment

– Work-Life Balance: Choose your working format – remote, office-based, or hybrid and engage in team-building activities

Think this role’s got your name on it? Go ahead and apply, we’d love to see what you’ve got!

*Medical Insurance and Sport Card perks are available for employees located in Bulgaria.

Your engineering maturity caught my eye! For a product company we`re seeking a Senior Full Stack to design systems with full ownership. High-load, event-driven architecture, no micromanagement. Even if you’re new to Go/React, your system thinking is key to starting this path. 

Experience with Go and/or React is an advantage but not required.

Main Responsibilities

– Design and implement features from idea to production

– Work across backend, frontend, APIs, databases, and integrations

– Participate actively in Scrum ceremonies and contribute to planning and estimation

– Take architectural decisions and improve existing system design

– Write clean, testable, maintainable code

– Perform code reviews and mentor other engineers

– Improve performance, reliability, and scalability of the system

– Work closely with Product, QA, and DevOps

Mandatory Requirements

– 7+ years of hands-on software engineering experience

– Strong understanding of system design and architecture

– Proven experience building and maintaining high-load, event-driven systems

– Ability to work across the full stack (backend + frontend)

– Experience working in Agile / Scrum teams

– Strong ownership and accountability for delivered features

– Solid understanding of APIs, databases, and modern web architectures

– Experience with Git and CI/CD workflows

– Ability to learn new technologies quickly and independently

Will be a plus

– Experience with Go

– Experience with React or modern frontend frameworks

– Experience with microservices and distributed systems

– Experience with cloud environments and containers

– Experience with observability and monitoring tools

We offer

– Your Wellness: Access to mental health programs, comprehensive medical insurance, and a sports card

– Your Happiness: Enjoy the company of cool teammates, a friendly atmosphere, a strong mentorship, and a variety of bonuses & corporate gifts

– Your Development: Benefit from free educational events & courses, and English classes with native speakers

– Your Career: Focus on your professional development in a supportive environment

– Work-Life Balance: Choose your working format – remote, office-based, or hybrid and engage in team-building activities

Think this role’s got your name on it? Go ahead and apply, we’d love to see what you’ve got!

*Medical Insurance and Sport Card perks are available for employees located in Bulgaria.

We are seeking Senior Google Tag Developer to support the implementation of its new headless e-commerce platform. This role will be responsible for designing, developing, validating, and maintaining the JavaScript data layer used by Google Tag Manager, Google Analytics, and related analytics and marketing platforms.
 

Required Qualifications

• Strong hands-on experience with JavaScript (preferably React and/or Next.js.)
• Experience developing data layer implementations for Google Tag Manager.
• Experience with window.dataLayer and dataLayer.push() event structures.
• Understanding of single-page application tracking challenges.
• Experience with e-commerce tracking requirements.
• Ability to translate business analytics requirements into technical implementation details.
• Strong browser debugging skills using Chrome DevTools, GTM Preview Mode, and analytics debugging
  tools.
• Experience troubleshooting event timing, duplicate events, state changes, and asynchronous data
  availability.
• Ability to work with APIs, JSON payloads, and structured data.
• Strong documentation and communication skills.
• Experience working in Agile development environments.
   

Nice to Have:

• Experience with Salesforce platforms
• Familiarity with Jira, Azure DevOps, GitHub, GitHub Copilot, and CI/CD processes.
• Experience writing QA-ready technical specifications and acceptance criteria.
   

Responsibilities

• Design and maintain the JavaScript data layer
• Implement e-commerce events (product, cart, checkout, purchase, login, subscriptions, promotions)
• Ensure correct event timing and data accuracy in SPA/SSR (React / Next.js)
• Prevent and fix duplicate, missing, or incorrect events
• Integrate with GTM and GA4 and ensure data usability (reporting, attribution, personalization)
• Translate requirements into data layer specifications
• Collaborate with Frontend, QA, Analytics teams
• Ensure consent-aware tracking
   

What We Offer

• Fully remote work
• International team with clear processes
• Paid vacation, holidays, and sick leave

About the Project

We are supporting a long-term client with a strong background in React and Node.js development, working with major telecom companies such as AT&T, Vodafone, and Telos International.

This engagement marks a new direction for the client: their first Shopify-based project.

The end customer operates in the mobile device diagnostics industry, providing a proprietary system that combines hardware (USB diagnostic hubs) and software to automatically assess the condition of mobile devices (battery health, memory, display, etc.) when plugged in.

Their solution allows retailers and telecom operators to instantly evaluate returned phones without sending them to repair centers, significantly reducing logistics costs and turnaround times.

The company originally started in the law enforcement sector, building tools for mobile data extraction during investigations, before pivoting into commercial telecom and retail diagnostics.

Project Overview

• Existing Shopify store already exists for mobile devices, but the new project is expected to be a significant rebuild or extension rather than a simple theme update
• Strong focus on backend-heavy Shopify development
• Work will include:
  • Custom Shopify app development
  • API integrations between Shopify and external systems
  • Logistics and warehouse workflow automation
  • Connection between Shopify storefront and proprietary diagnostic backend platform
• Scope is expected to go beyond standard Shopify theme customization

Technical Focus

We are specifically looking for a Shopify Developer with strong backend capabilities, including:

• Shopify Apps (custom/private apps)
• Shopify Admin API / Storefront API
• Node.js backend development
• API design & integrations
• Experience with warehouse/logistics or ERP-style systems (strong plus)
• Ability to work on system architecture beyond frontend theming

Ideal Candidate

You are a strong fit if you:

• Have solid Shopify backend / app development experience
• Are comfortable building integrations between Shopify and external systems
• Think in APIs, workflows, and system architecture rather than only themes/UI
• Can work independently in an initially unclear scope
• Communicate clearly and reliably in a fast-moving client environment