Jobs Developers

The Mission

We aren’t looking for a traditional server administrator or a standard database developer who just writes basic CRUD APIs. We need an elite Backend Systems Architect who can build world-class, hyper-scalable, and fault-tolerant infrastructure with surgical precision. Your job is to engineer our core distributed systems, optimize real-time data pipelines, and ensure absolute service reliability under immense global load. This is a remote, high-availability role for a technical powerhouse who views backend systems as a high-performance engine and is comfortable operating at the absolute frontier of the Web3 economy.

We value structural integrity, clean concurrent code, and engineering momentum over corporate credentials. Whether you have designed high-throughput financial rails or led the architecture for high-velocity distributed platforms, we care about your ability to ship. If you have the analytical rigor to handle massive data concurrency, eliminate latency spikes, and protect data integrity, we will give you the runway to build our engine room.

Key Responsibilities

• Backend Systems Development: Design, scale, and maintain high-performance server-side logic that remains rock-solid under heavy concurrent user velocity.
• API Architecture: Build and optimize flexible, self-documenting API schemas that connect our complex internal data layers seamlessly to our consumer interfaces.
• Distributed Systems: Architect resilient, decentralized system nodes that communicate asynchronously with zero single points of failure.
• Database Design: Structure highly performant database schemas, indexes, and caching strategies to ensure sub-millisecond retrieval speeds for critical data.
• Infrastructure Scalability: Constantly stress-test, optimize, and scale our core service clusters to handle explosive traffic spikes and massive computational throughput.
• Service Reliability: Implement rigorous monitoring, automated failover protocols, and strict error-handling mechanics to ensure absolute 24/7/365 system uptime.

The Technical Stack

You must possess elite-level, hands-on mastery of the following stack:

• Node.js: Advanced asynchronous architecture, event loop optimization, and high-performance package deployment.
• GraphQL: Complex schema design, advanced resolver optimization, and efficient query/mutation orchestration.
• Golang: Concurrent programming patterns (Goroutines/Channels), high-performance memory management, and microservice optimization.
• MongoDB: Non-relational database design, aggregation pipeline optimization, and advanced indexing strategies under heavy write-loads.
• Kafka: Real-time event streaming, message broker architecture, and distributed partition management.
• Redis: In-memory caching architecture, real-time pub/sub mechanics, and high-velocity data state retention.
• Microservices Architecture: Containerized, horizontally scalable service decoupling, internal RPC communication, and distributed event-driven logic.

The Requirements

• The "Systems Architect": Proven experience shipping production-grade, highly resilient backend ecosystems. You have a deep understanding of data structures, concurrency, and network protocols.
• Analytical Rigor: You don't guess when it comes to systems performance. You use profiling tools, load-testing frameworks, and internal monitoring metrics to track down and eliminate bottlenecks.
• Hyper-Availability: This isn't a 9-to-5. Our ecosystem runs 24/7/365. You must be available 7 days a week to handle real-time hotfixes, critical system deployments, and sudden market surges.
• Web3/Internet Culture Intuition: You understand the unique technical challenges of digital asset data, transaction validation speeds, and fast-paced, digital-native environments.
• Operational Excellence: Self-motivated and highly organized; you write clean, idiomatic code, write bulletproof tests, and manage your development pipeline without hand-holding.

Operational Details

• Location: Fully Remote.
• Schedule: On-call 7 days a week (Requires high flexibility to handle real-time hotfixes, system maintenance, and global release cycles).
• Payment: All compensation is processed in digital assets (USDC/USDT).

Why Join Us?

We offer more than just a typical software engineering ticket-shuffling job; we offer the chance to architect the engine of a global powerhouse.

• Extreme Technical Autonomy: We value clean execution over red tape. You will have the freedom to design, optimize, and break new ground within a high-speed environment.
• Global Infrastructure: Your code will run the core systems touched, tested, and relied upon by thousands of users every single second across a worldwide landscape.
• A Culture of Momentum: Join a team that moves at the speed of light. If your system architecture is tested and ready to ship on a Sunday night, we push it to production.
• High-Growth Upside: We value "potential over pedigree." For a senior engineer who takes extreme ownership of our core platform, there is a clear, unrestricted runway to lead the entire engineering organization.

Who We Are

Altum is a Ukrainian software development house that supports digital agencies and startups across the US and Western Europe with technical expertise. 
 

Position Overview

We're looking for a Junior WordPress Developer with at least 1 year of hands-on experience to join our remote team. You'll work on real client projects — building, customizing, and maintaining websites across WordPress, Shopify, and Webflow. If you're comfortable getting things done independently, learning fast, and don't mind asking questions when stuck — this is a solid place to grow.
 

Responsibilities

• Build and customize WordPress websites based on client requirements and design specs
• Work with Shopify and Webflow when projects require it
• Make sure sites are fast, responsive, and cross-device compatible
• Keep project managers in the loop with clear, timely updates

Requirements

• 1+ year of experience as a WordPress Developer
• Working knowledge of HTML, CSS, JavaScript, PHP, and MySQL
• Understanding of WordPress architecture, themes, and plugins
• Hands-on experience with Shopify (theme customization, basic store setup)
• Hands-on experience with Webflow (building and editing sites)
• Ability to work independently in a remote environment

Recruitment Stages

1. Initial Interview — up to 30 min
2. Feedback
3. Technical Interview
4. Feedback
5. Interview with CEO
6. Final Feedback

We’re looking for an AI Engineer to join our outsourcing team — not a pure ML researcher, but a pragmatic, data-driven backend engineer who knows how to put LLMs, vision APIs, and off-the-shelf models to work inside real products.

Most of our work isn’t training models from scratch — it’s understanding the business logic, collecting and cleaning data, wiring it into LLMs or services like AWS Textract, and shipping the result as a reliable API inside our existing platform.

If you’ve spent the last few years building APIs and integrations, you’re comfortable with data, and you’ve leaned hard into Cursor or Claude Code to deliver projects faster — this is for you.

What you’ll do

• Build and ship LLM-powered features: prompt design, data prep, passing context to the model, parsing and validating output, returning clean APIs.
• Design and implement integrations between our product and third-party AI services (OpenAI, Anthropic, Hugging Face models, AWS Textract, etc.).
• Take document-processing and computer-vision tasks end-to-end: ingest → Textract/vision API → post-process → structured output consumed by our backend.
• Write backend services and APIs in Node.js (our primary backend), dropping into Python when a task calls for it (model work, data scripts, fine-tuning).
• Fine-tune existing models and prompts — not from scratch, but iterating on what’s already in place to get better accuracy, cost, or latency.
• Do the unglamorous but critical work: data collection, cleaning, transformation, pattern-finding — often by letting an LLM do the heavy lifting on structured and unstructured input.
• Maintain and improve existing AI and automation workflows already running in production.
• Monitor cost and performance of model/API usage, propose optimizations, and forecast costs for new features.
• Prepare and present demos and solution overviews to U.S.-based clients.
• Document architecture, prompts, and pipelines in Confluence.

What we’re looking for

• 2+ years shipping production backend systems, with meaningful hands-on experience integrating LLMs or AI APIs into real products.
• Strong in Node.js with the flexibility to work in Python. We need someone ready to switch to Puthon if needed.
• Solid grasp of algorithms and data structures — enough to write custom logic when an LLM or library can’t cover the case.
• Real experience with LLM integrations: OpenAI, Anthropic, or similar. Prompt engineering, function/tool calling, structured output, retrieval, evaluation.
• Familiarity with the Hugging Face ecosystem — picking models, running inference, fine-tuning where it makes sense.
• API and integrations background: REST, auth, webhooks, rate limits, retries, idempotency — the stuff that makes integrations not break at 2 a.m.
• Comfortable with data work: collecting, cleaning, transforming, and analyzing data (SQL, pandas, or the Node equivalents).
• Working knowledge of AWS — especially Textract, Lambda, S3, and the services around document and data pipelines. Bonus for Athena, Glue, Kinesis, SageMaker.
• Exposure to NLP and Computer Vision concepts — enough to pick the right tool and evaluate results, not necessarily to train SOTA models.
• Familiarity with CI/CD and deploying AI-powered services to production.
• Experience building chatbot workflows — conversational flows, multi-turn logic, context management — is a plus, as this is among our planned projects.
• AI-native delivery workflow. You use Cursor or Claude Code daily and know how to ship a project with minimal hand-written code — scoping work for the agent, reviewing generated code critically, orchestrating multi-step tasks, and getting to shipped quality faster than a traditional workflow. If you can’t describe how you use these tools to deliver, this role isn’t the right fit.

Nice to have

• Experience fine-tuning open-source LLMs or vision models on domain-specific data.
• Background in fintech, healthcare, or construction domains.
• Experience with vector databases, RAG pipelines, or agentic workflows.

What we offer

• Competitive salary with regular reviews.
• Support for individual entrepreneurs with accounting assistance.
• Fully remote work.
• A clear path for professional development and growth.
• A friendly team environment and engaging team-building activities (online and offline).

We are looking for a Senior Microsoft Dynamics 365 CRM Developer. The role is highly hands-on and focused on building, customizing, integrating, and supporting Microsoft Dynamics 365 CRM solutions across multiple business domains.
 

Projects may include:

• CRM platform development
• Customer Journey / Marketing applications
• Contact Center solutions
• Case management systems
• On-prem to cloud migrations
• Enterprise integrations and automation workflows
   

Responsibilities:

• Design, develop, and customize Microsoft Dynamics 365 CRM solutions
• Build plugins, workflows, integrations, and custom business logic
• Collaborate with architects, consultants, and business stakeholders
• Support integrations with external enterprise systems and APIs

• Troubleshoot and resolve platform and application issues

   

Must-have:

• 5+ years experience with Microsoft Dynamics 365 CRM (including Dynamics Customer Journey / Marketing modules, Contact Center or Case Management solutions
• Experience with C#, .NET, JavaScript, and Dynamics customization
• Solid understanding of CRM architecture and business processes
• Experience building integrations and working with APIs
   

Nice to have:

• Cloud migration projects
• Government or enterprise-scale environments
• Azure or cloud platform exposure
   

What a Strong Candidate Looks Like:

• Previously worked on enterprise or government-scale Microsoft Dynamics environments
• Proactive and ownership-driven – able to solve problems independently
• Strong communicator who collaborates effectively with remote international teams
• Pragmatic engineer focused on delivery quality rather than overengineering

• Security-conscious and comfortable working within compliance-driven environments

   

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups
   

Come on board, and let’s grow together!

Join white.market – Shape the Future of CS2 Skin Trading!

At white.market, we’re changing the game in CS2 skin trading, making it cheaper, smarter, and more secure. As part of the WhiteBIT ecosystem, we provide zero-fee crypto transactions, real-money payouts, and seamless P2P trading—a first in the industry.We’re growing fast and looking for passionate people to help us build the ultimate trading platform for gamers and traders worldwide. If you love innovation, gaming, and fintech, you’ll feel right at home with us!

Join us as a Full Stack Developer!

Requirements: 

- 2+ years of commercial experience in full-stack web development (FE & BE)
- Strong knowledge of PHP 8+ with Symfony
- Solid experience with JavaScript / TypeScript
- Proficiency in React and Next.js for front-end development
- Good understanding of REST APIs, JSON, and asynchronous programming
- Experience working with relational databases and SQL (PostgreSQL / MySQL)
- Hands-on experience with caching and asynchronous data processing
- Familiarity with Git, CI/CD workflows, and containerization (Docker)
- Good understanding of web architecture, security, and performance optimization

Would be a Plus:
- Basic understanding of GraphQL

- Experience with React/Next.js

Responsibilities: 

— Develop, maintain, and improve web applications using modern front-end and back-end technologies
— Work with RESTful APIs and integrate third-party services
— Collaborate with marketing, designers, product managers, and QA engineers to deliver high-quality features
— Write clean, efficient, and reusable code following best development practices
— Participate in code reviews and contribute to continuous improvement of the development process
— Troubleshoot, debug, and optimize application performance
— Document technical solutions and maintain project-related knowledge bases

Work conditions: 

Why You’ll Love Working Here:
— Impact – Be part of a fast-growing Web3 product disrupting the CS2 market.
— Passion-Driven Team – Work with gaming and crypto enthusiasts who love what they do.
— Innovate & Grow – Your ideas matter. Help shape the product and influence its success.
— Flexibility – A dynamic environment with remote-friendly opportunities.
Work-Life Balance & Well-being:
— Modern equipment.
— Comfortable working conditions, and an inspiring environment to help you thrive.
— 24 calendar days of paid leave.
— Additional days off for national holidays.

Ready to change the game with us? Apply now and let’s build something big together!

Dripify (🔗 dripify.com) is a pioneering, remote-first IT product company specializing in outreach automation products. Our platform empowers businesses by revolutionizing hiring, sales, and marketing communication processes, making interactions more efficient and seamless.

We’re looking for a Java Team Lead who will split their time between hands-on backend development (50%) and technical/team leadership (50%).
 

You’ll lead a team of 5 engineers, ensure delivery quality, and own architectural decisions, while also contributing code and driving technical excellence.
 

Requirements
 

• 5+ years of hands-on Java development experience (Java 21+).
• 2+ years leading a development team.
• Deep practical experience with Spring Boot modules (Web, Security, Data, Messaging).
• Strong knowledge of Java concurrency, multithreading, and backend system design.
• Proficient in SQL databases (PostgreSQL preferred).
• Experience with REST APIs and asynchronous messaging (SNS/SQS).
• Skilled in CI/CD, code quality gates, and automated testing.
• Hands-on with Docker, Linux, and system-level debugging.
• Familiar with monitoring/logging tools (ELK, Prometheus, Grafana).
• Strong focus on security best practices: auth, validation, access control.
• Working knowledge of AWS: IAM, EC2, RDS, S3, CloudWatch, Secrets Manager.

Would be a plus:
 

• Experience in designing and operating microservice-based architectures.
• Familiarity with Kubernetes (EKS or self-managed).
• Experience with Terraform and Infrastructure-as-Code.
• AWS Certifications (e.g., Developer Associate, Solutions Architect).

• Bachelor’s or Master’s in Computer Science or related field.
  
   

   

Responsibilities
 

Development (50%)

• Build modular, secure, and maintainable backend systems using Java 21+ and Spring Boot.
• Design and implement RESTful APIs and event-driven services (SNS/SQS).
• Write tested, high-quality code with strong focus on unit/integration testing.
• Ensure CI/CD integration, monitoring, and production readiness.
• Drive system performance and scalability improvements.

Leadership & Delivery (50%)

• Lead a backend team: mentorship, code reviews, and engineering growth.
• Own delivery quality: scope planning, progress tracking, risk mitigation.
• Document and communicate architectural decisions.
• Coordinate cross-functionally with product managers, DevOps, and QA.
• Promote best practices in secure development and clean architecture.
   

Work conditions
 

• 100% remote position, providing flexibility and work-life balance.
• Competitive salary reflecting your skills and expertise.
• 24 days of paid vacation per year to recharge and relax.
• 10 days of paid sick leave.
• Educational opportunities.
• Compensation budget for medical and hobby/sport expenses.
• Generous budget for birthdays and anniversaries.
• Online and offline team events.

• A collaborative and innovative work environment with passionate team members.

  
   

Hiring process
 

✅ Interview with Recruiter (45 min) — ✅ Technical interview with Engineering Manager (90 min) — ✅ Interview with CTO (45 min) — ✅ Reference check — ✅ Offer

We are looking for Middle and Senior Shopify App Developers to join a project focused on extending and improving existing Shopify applications.

The role is focused specifically on Shopify app development with a strong Ruby on Rails backend expertise. You will work on implementing new functionality, improving existing features, and contributing to scalable Shopify-based solutions.

Project Details

• Client Location: Ukraine
• Employment Type: Freelance 
• Engagement: Full-time
• Duration: 3+ months

• Project Type: Existing Shopify applications development and feature expansion

   

Requirements

Must Have

• 3–5+ years of commercial development experience
• Strong experience with Shopify app development
• Solid knowledge of Ruby on Rails
• Experience with Node.js
• Strong TypeScript skills
• Experience integrating with Shopify APIs and ecosystem
• Understanding of scalable backend development principles

• Ability to work independently and communicate effectively within a distributed team

   

Nice to Have

• Experience with Shopify Admin API / GraphQL
• Experience building public or custom Shopify apps
• Familiarity with Shopify app architecture and app deployment processes

• Experience with performance optimization and third-party integrations

   

Responsibilities

• Develop new functionality for existing Shopify applications
• Design and implement backend features using Ruby on Rails
• Work with Shopify APIs and integrations
• Maintain and improve existing codebase
• Collaborate with internal and client-side teams

• Participate in technical discussions and feature planning

   

Interview Process

1. Recruiter Interview
2. Internal Technical Interview

3. Client Interview

    

Additional Information

• This role is specifically focused on Shopify app development rather than Shopify theme development
• Strong backend expertise with Ruby on Rails is important
• Long-term cooperation is possible depending on project needs

Cropwise Operations is a global leader in digital agritech solutions, operating in over 50 countries and helping optimize business processes and improve the efficiency of agronomic decision-making.  

We are looking for a skilled Ruby on Rails Developer to join our team.

What we expect from a candidate:

- Preferably 3+ years of Ruby on Rails development experience.

- Strong knowledge of Rails.

- Experience with testing frameworks like RSpec and Capybara.

- Testing with RSpec/Capybara.

- Basic knowledge of ES6 + React.js.

- Experience with JavaScript.

- Standard Rails application deployment stack (Git, CI, Capistrano, *nix).

- Knowledge of HTML/CSS.

What exactly will you need to work with:

- Backend on Ruby on Rails 7.0 (Ruby 3.2).

- PostgreSQL + PostGIS database (handling large geospatial datasets).

- Job processing with Resque + Redis.

- Testing on RSpec + Capybara + CI.

- Partially frontend on React.js (ES6, JSX).

What else can you work with?

- Algorithms for processing large amounts of geodata.

- Reception and processing of binary data (Ruby eventmachine).

- Working with RabbitMQ.

- AWS, Google Cloud, Kubernetes.

- Visualization and work with geodata on the frontend (Mapbox GL JS).

Hiring process:

- Intro call;

- Test Task;

- Final Interview;

- Offer.

The company offers:

- Opportunity to be a part of a best-in-class product that is used by thousands of companies around the world.

- Participation in complex technical tasks and challenges.

- Environment where you need to seek and implement unique engineering and technical solutions.

- Trainings and development programs.

- Flexible work formats: remote, office or hybrid.

- Health and life insurance for employees and your family members.

- 32 working days of paid annual leave and sick leave.

About Cropwise Operations

Cropwise Operations is a SaaS platform for farmers, leveraging cutting-edge technologies such as computer vision, big data, and AI to deliver actionable insights and improve agricultural outcomes.

For seekers, cooperation with Cropwise Operations is an opportunity to be part of a best-in-class product used by hundreds of companies around the world, and to deal with complex technical tasks in the field of neural networks and machine learning with the need to constantly improve their knowledge and skills, to find and implement unique engineering and technical solutions.

We are looking for an AI-driven Full Stack Developer to join our team building next-generation healthcare infrastructure.
 

You’ll work on products focused on credentialing, compliance, staffing, provider workflows, and operational automation. We move fast, ship often, and use AI deeply across engineering and product workflows.

This is not a traditional engineering role. We are looking for builders with strong product thinking, ownership mentality, and experience working with modern AI tooling.
 

What we’re building

• AI-powered credentialing workflows
• Provider identity and compliance infrastructure
• Healthcare staffing and hiring tools
• Facility workflow systems
• Secure access and document management
• Intelligent automation for healthcare organizations
   

What you'll do

• Build full stack applications using PHP/Laravel and React/TypeScript
• Design scalable REST APIs and backend services
• Develop modern frontend architecture and reusable UI components
• Work with PostgreSQL and scalable data models
• Build asynchronous workflows using AWS SQS, RabbitMQ, or Kafka
• Contribute to AI-native automation and workflow systems
• Collaborate closely with product, design, and engineering
• Participate in architecture and technical decision-making
• Own features end-to-end, from idea to production
• Write clean, maintainable, production-ready code
• Help improve engineering standards and platform scalability
   

What we’re looking for

• 4+ years of full stack development experience
• Strong PHP and Laravel experience
• Strong React and TypeScript experience
• Experience building and integrating REST APIs
• Solid PostgreSQL knowledge
• Experience with asynchronous systems and queues
• Strong understanding of scalable architecture
• Comfortable working in fast-moving startup environments
• Strong ownership mentality and proactive mindset
• Product thinking, not just implementation skills
• Ability to move fast, learn quickly, and adapt constantly
• Strong problem-solving and communication skills
• English level B2+

We actively use Claude and AI-assisted engineering workflows every day. This is a core part of our development culture.

AI tools already cover much of routine engineering work. We are looking for engineers who can think critically, make product decisions, improve systems, and drive execution.

You should already have experience with:

• AI-assisted development
• agentic workflows
• AI-driven debugging and architecture
• rapid iteration using modern AI tools

Responsibilities may also include:

• designing UI components and product flows using AI tools
• improving UX and feature usability
• taking full ownership of features and delivery
   

Nice to have

• Experience with AWS infrastructure
• Experience with Python
• Experience building AI-enabled products
• Frontend performance optimization
• Experience with testing frameworks
• Understanding of accessibility and modern UI/UX practices
   

Why join us?

• Build technology that solves real healthcare problems
• Work on an AI-first platform with ambitious vision
• Influence architecture and product direction
• Work with a strong, mission-driven team
• Remote-friendly and flexible culture
• Opportunity to grow with a fast-scaling company

Who we are:

Adaptiq is a technology hub specializing in building, scaling, and supporting R&D teams for high-end, fast-growing product companies in a wide range of industries.

About the Product:

Cynet is a unified, AI-powered cybersecurity platform that autonomously detects, protects, and responds to threats across Windows endpoints.

The core product is a Windows EDR agent that runs on hundreds of thousands of devices, offering real-time detection, prevention, and response with minimal resource impact.

Built for organizations of all sizes, it consolidates threat detection, response, and compliance into a single agent and console, backed by 24×7 MDR experts.

The platform addresses the industry challenge of growing cyber threats by delivering fast, accurate protection without noise or complexity.

About the Role:

As a Windows C++ Developer, you will join the award-winning Windows EDR team and drive low-level development on the heart of Cynet’s protection platform.

You will design and implement core components in a user-mode, multithreaded environment, owning features end-to-end from architecture through deployment.

Your work will directly impact hundreds of thousands of Windows endpoints, shaping detection and prevention capabilities and ensuring product stability at scale.

This role combines deep technical challenges in Windows internals, performance tuning, and real-time programming with cross-team collaboration among security researchers, product managers, and support engineers.

You will have autonomy to propose solutions, influence architectural decisions, and take ownership of critical features that define the product’s competitive edge.

Key Responsibilities:

• Design and implement user-mode services and low-level components for the Windows EDR agent
• Develop multithreaded applications with thread synchronization and real-time constraints
• Collaborate with security researchers to translate detection rules into code
• Own feature lifecycle: design, coding, performance tuning, and integration
• Debug escalated customer issues, analyze logs, and perform remote debugging sessions
• Conduct code reviews and ensure adherence to OOP and clean coding principles
• Write and maintain unit tests and automation scripts within the existing framework
• Optimize memory management, I/O performance, and resource usage for large-scale deployments
• Participate in sprint planning, PI design sessions, and architectural discussions

Required Competence and Skills:

• 4+ years of experience in C++ development on Windows (modern C++17/20/23 – an advantage)
• Deep understanding of Windows OS internals and Windows API
• Proven experience with multithreaded programming, synchronization, and real-time constraints
• Strong software design, OOP, and clean coding practices
• Expertise in memory management and I/O performance optimization
• Proficient debugging skills, including remote debugging and log analysis
• Familiarity with smart pointers (shared_ptr, unique_ptr) and move semantics
• Experience writing unit tests and integrating automation tests

Nice to Have:

• Kernel-mode development experience
• Background in reverse engineering or malware analysis
• Prior experience in security-oriented software development
• IDF Cyber Unit alumni

Why Us:

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

We provide full accounting and legal support in all countries we operate.

We utilize a fully remote work model with a powerful workstation and co-working space in case you need it.

We offer a highly competitive package with yearly performance and compensation reviews.

We are looking for a Senior Fullstack Developer who will help build and scale modern web products for international clients. You will work alongside a strong engineering team, contribute to technical decisions, and develop high-load applications with modern architecture.

Work Format

• Full-time

• Remote 

   

Responsibilities:

• Develop and maintain frontend applications using React
• Build and support backend services with Node.js
• Design and maintain REST APIs and integrations
• Work with databases and optimize application performance
• Participate in code reviews and technical planning
• Collaborate closely with Product Managers, Designers, and QA engineers
• Contribute to product architecture and engineering decisions

Requirements:

Must-have:

• 5+ years of commercial experience in web development
• Strong experience with React.js
• Deep knowledge of Node.js
• Hands-on experience with TypeScript
• Experience designing and building REST APIs
• Practical experience with PostgreSQL or MongoDB
• Understanding of microservices architecture
• Experience with Docker
• Git / CI/CD workflows
• English level: Intermediate+

Nice to have:

• Experience with Next.js
• AWS / GCP experience
• Kubernetes knowledge
• GraphQL experience
• WebSocket / real-time applications experience
• Experience working with high-load systems

What we offer:

• Competitive salary
• Paid vacation and sick leave
• Professional growth and learning opportunities
• Work on international products
• Strong engineering culture

About the Project
We are developing modern SoftPhone applications for Android, iOS, and a WebRTC client, designed as an extension of our core product PortaSwitch — a Class 4 & Class 5 SIP softswitch platform.
This role offers a unique opportunity to work closely with PortaSwitch, collaborate with an experienced engineering team, grow your expertise in VoIP telephony, and contribute to a live, actively evolving product.

Team Setup
You will join a team of 7 professionals:
 

• 1 Project Manager
• 1 Senior Developer Lead
• 3 Mobile Developers
• 1 Web Developer
• 1 Backend Developer

Key Responsibilities
 

• Design and develop the server-side backend of the WebTrit system
• Build scalable, high-performance solutions supporting real-time communication services

• Collaborate with mobile and web teams to deliver seamless product functionality

   

Required Skills & Experience

• Python (strong backend development experience)
• Solid knowledge of Phoenix and Ecto
• Strong knowledge / hands-on experience with WebRTC
• Experience with PostgreSQL
• Proven experience building backend services in production

Nice to Have

• Elixir (2+ years of commercial experience)

English Level
 

• Written English is sufficient for day-to-day communication

   

We offer:

• Professional development
• Highly skilled colleagues who are ready to share knowledge
• Performance review every six months
• Paid vacations, compensatory leaves and sick leave
• Work schedule up to you: standard “office” schedule (5 day 9 till 18.00 it is Kyiv time (UTC+2/+3 ) Or flexible schedule with 12-hour shifts every three days from 8 till 20.00 or from 20.00 till 8.00.
•  English classes with the experienced teachers

Voltra is the analytics layer for car dealerships, built on top of their existing DMS/CRM stack. We pull data from VinSolutions, ProMax, DealerTrack, CDK and surface the metrics that actually move the needle — close rate, BDC performance, lead source ROI, inventory aging. We are at 10 rooftops and have established Product Market Fit. Now is the time to scale.

We're hiring our first full-time engineering hire outside the founding team. You'll work alongside our lead engineer who owns 90% of the codebase today. Your job is to take that down to 50% within 3 months by owning features end-to-end, reviewing PRs, and breaking up the next-tier mega-modules so we can ship faster.

What you'll do (first 90 days):

• Own end-to-end features in our Next.js + Supabase dashboard (current size: ~135k LOC, 144 migrations)
• Review and approve PRs — close our review bottleneck
• Refactor the biggest pain files 
• Build new dealer-data integrations 
• Set up CI/CD if it isn't done yet (GitHub Actions: typecheck, lint, test, preview deploys)
• Write tests on the highest-risk surfaces

Domain: B2B SaaS / Automotive Retail (Dealership Analytics)

Meet the YozmaTech YozmaTech isn’t just another tech company – we’re a global team of go-getters, innovators, and A-players helping startups and product companies scale smarter and faster. We build dedicated development teams across 10+ countries, creating strong, long-term partnerships based on trust, transparency, and real impact. Here, every idea counts. We value people who are proactive, open-minded, and ready to grow. If you’re passionate about building meaningful products and want to join a team that feels like family – you’ll feel right at home with us.

Our client is a B2B technology company focused on providing advanced AI and GEO solutions to help businesses maximize their visibility on platforms like ChatGPT, Claude, and Perplexity. Our core product is a visibility tracker and analytics dashboard, built with Next.js and Node.js, which leverages extensive data scraping and engineering to ensure our clients’ brands are indexed and ranked effectively in AI-driven search results. We operate multiple projects, all centered around data engineering, backend services, and customer-facing dashboards. Our technology stack includes Next.js (frontend and backend), Node.js, PostgreSQL, and various AWS/VPS cloud services. We emphasize robust, high-performance UI features and backend data processing.

About the Role We are looking for three Senior Full Stack Developers to join our fast-growing engineering team. You will be responsible for end-to-end development of features, from ideation to production, including coding, responsive design, QA, and deployment. You will work closely with our tech leads and founders, contributing directly to our core products and new initiatives. Team & Workflow

Current engineering team:
5 developers (all full stack, no dedicated QA/DevOps);
You will join a collaborative, flat-structured team where everyone is hands-on no rigid sprints;
We use a Kanban-style workflow for task management;
Fast-paced, startup-like environment with direct communication and quick decision-making

Key Requirements:
🔹 8+ years of professional software development experience;
🔹 2-3 years of commercial experience with daily usage of AI tools;
🔹 At least 2-3 years of hands-on experience with Next.js;
🔹 At least 5 years of experience with Node.js;
🔹 Strong experience with PostgreSQL and general backend development;
🔹 Experience with data scraping and data engineering is highly desirable;
🔹 Ability to work independently and take initiative without detailed specifications or designs;
🔹 Fluent English (spoken and written);
🔹 Flexible, proactive, and able to “think out of the box”;
🔹 Team player, open to feedback, and eager to learn and share knowledge;
🔹 Familiarity with Kanban workflows (no strict sprints);
🔹 Comfortable with daily communication and collaboration tools (Slack, WhatsApp);
🔹 Willingness to use own laptop (MacBook can be provided if needed);
🔹 English – Upper-Intermediate or higher.

Will be plus:
🔹 Experience with Python;
🔹 Familiarity with AWS or VPS hosting environments;
🔹 Experience working in small, agile teams;

What you will do:
🔹 Develop and maintain full stack applications using Next.js (frontend) and Node.js (backend);
🔹 Implement robust, high-performance UI features with server-side rendering (SSR);
🔹 Build and optimize backend services, focusing on data engineering and web scraping;
🔹 Work independently on assigned features, taking ownership from design to deployment;
🔹 Collaborate with the team via Slack and WhatsApp; participate in daily standups and regular;
🔹 Product meetings;
🔹 Review and approve pull requests; ensure high code quality and best practices;
🔹 Communicate effectively in English and contribute to a flexible, fast-paced environment;
🔹 Handle all aspects of the software lifecycle, including QA and responsive design;

Interview stages:
🔹 HR-interview;
🔹 2 technical interview stages (each ~45 minutes, both technical);
🔹 Reference check;
🔹 Offer;

Why Join Us?

At YozmaTech, we’re self-starters who grow together. Every day, we tackle real challenges for real products – and have fun doing it. We work globally, think entrepreneurially, and support each other like family. We invest in your growth and care about your voice. With us, you’ll always know what you’re working on and why it matters.
From day one, you’ll get:
🔹 Direct access to clients and meaningful products;
🔹 Flexibility to work remotely or from our offices;
🔹 A-team colleagues and a zero-bureaucracy culture;
🔹 Opportunities to grow, lead, and make your mark.

After you apply

We’ll keep it respectful, clear, and personal from start to offer.
You’ll always know what project you’re joining – and how you can grow with us.

Everyone’s welcome

Diversity makes us better. We create a space where you can thrive as you are.

Ready to build something meaningful?

Let’s talk. Your next big adventure might just start here.

We are looking for a Senior or Lead Software Development Engineer to join a cloud data platform initiative focused on managed Kafka connectors. The role centers on accelerating onboarding of first-party connectors, improving reliability and launch readiness, and helping expand a managed connector ecosystem used in data-intensive cloud services.

Tasks

• Accelerate onboarding of new first-party managed Kafka connectors;
• Improve connector quality, reliability, and operational readiness;
• Integrate authentication and platform-specific cloud requirements;
• Translate connector behavior into implementation details, UI specs, and documentation inputs;
• Support launch gates such as probers, load testing, playbooks, and launch reviews.

Responsibilities

• Strong Java experience, as the core workers and connectors are implemented in Java;
• Practical Go experience for API-facing changes and service integration work;
• Practical experience with GCP cloud;
• Experience integrating, debugging, and improving connector-based or data integration systems;
• Ability to work across performance, stability, authentication, and network-compatibility concerns;

• Strong engineering ownership across delivery, launch readiness, and operational quality.

   

Nice to Have:

• Experience with Kafka Connect ecosystems;
• Experience with CDC-oriented connectors or sink/source integrations;

• Exposure to cloud data systems such as BigQuery, Spanner, Bigtable, Iceberg, or Debezium-based workflows.

   

Engagement Type

• B2B contract.

   

Location / Timezone

• Priority location is Krakow, Poland;
• On-site presence at the Akvelon office