Jobs

We are looking for a Software Engineer to join a HubSpot engineering team building custom integrations for customer SaaS platforms and third-party providers, supporting products with hundreds to tens of thousands of active users. You will work on new feature development, maintenance, and customer issue resolution. Our team owns HubSpot’s integrations with multiple Google products. Recent work includes launching brand-new Google Drive and Google Chat integrations and significantly improving the Jira integration with formatting support. HubSpot offers a strong engineering culture across teams in the USA, Ireland, Germany, Ukraine and other countries around the world. The platform is built on a large-scale microservices architecture (Java, Dropwizard, Guice) and integrates with technologies such as Kafka, SQS, S3, MySQL, and HBase. The frontend ecosystem consists of large-scale React and TypeScript single-page applications. Developers benefit from state-of-the-art infrastructure with one-click deployments to QA and Production, as well as AI assistants that help with initial code reviews and simple tasks. You will go through a structured onboarding with an onboarding buddy and hands-on exposure to HubSpot’s infrastructure and integrations. After onboarding, you’ll take ownership of features as a DRI and participate in PagerDuty rotation.

Intelliarts Ltd., founded in 1999 in Lviv, Ukraine, is a boutique engineering company that builds and supports dedicated development teams for global technology companies. We offer a flat structure with a strong focus on professional growth through challenging projects, close collaboration with international teams, and learning from experienced engineers.

Responsibilities

• Communicate directly with product management and peers in Boston and Dublin, other HubSpot development teams to shape out requirements
• Create new and extend existing microservices using Java 25, DropWizard, and whatever technology/tools required to complete a particular task
• Cover your code with all kinds of automation tests (unit, integration, acceptance, API, end-to-end)
• Fully own the software you’ve developed: design, develop, test, release, and support in both stage and production environments

Personal Profile Overview

• Degree in Computer Science, Software Engineering or related field
• Stability in previous employment history with a tendency to remain with employers for extended periods
• Experience in managing diverse project activities (not just coding, but also requirements analysis, preparing estimations)
• Clear and effective communication skills, both verbal and written, ability to convey ideas, information, and messages accurately and efficiently
• Proficiency in fostering effective collaboration and teamwork activities
• Ability to analyze information, assess situations, and make decisions based on sound reasoning and logical evaluation
• Focus on delivering exceptional customer experiences and prioritizing customer satisfaction
• Analytical thinking, problem-solving abilities, and strategic approach to technical challenges
• Transparency in sharing the information within a team and company
• Willingness to acquire new knowledge and insights to enhance professional growth and performance

Required Skills

• 3+ years working with Java
• Excellent understanding of the OO design/programming paradigm
• Solid background in computer science and programming
• Strong knowledge of databases and networks (HTTP/REST)
• Good understanding of unit testing/test automation
• Experience or strong knowledge in microservices architecture and message broker systems such as Kafka, Amazon SQS, etc.
• English Upper-Intermediate (B1-B2)

As a Plus

• Front-end development experience (React or other modern JS frameworks)
• Strong learning and development abilities
• Ability to work from the office in Lviv

We Offer

• Fuel your professional growth with paid online courses, conferences, certifications, English classes, a corporate library, and leadership program
• Thrive in a culture of trust and cooperation with no time trackers and minimal bureaucracy
• Enjoy 20 business days of paid vacation, plus state holidays to prioritize your well-being
• Experience an open-door culture, transparent communication, and top management at a handshake distance
• Enjoy comfortable office vibes with no open space policy, relaxing sports areas, a spacious bar/kitchen, and more
• Achieve balance with our hybrid/fully remote work model
• Receive fair and competitive compensation
• Fuel your productivity and foster a sense of community with complimentary daily lunches
• Participate in meaningful initiatives supporting Ukraine's victory
• Take flexible sick leave without burdensome documentation and access parental benefits
• Choose from comprehensive medical insurance or a sports compensation package
• Have fun with regular team-building activities, corporate events and celebrations, and unique initiatives like Week in Lviv

Responsibilities:

Embedded UI/UX Design

• Design user interfaces for resource-constrained embedded systems
• Optimize UX for:
  • Small screens
  • Physical buttons/keypads/touch screens
  • Field technicians and utility operators
• Work with firmware teams to ensure feasible, efficient, and robust UI implementation

PC Software UI/UX Design

• Lead UI/UX design for Windows-based configuration and monitoring tools
• Improve workflows for:
  • Device configuration
  • Data visualization (logs, waveforms, events)
  • Diagnostics, commissioning, and maintenance
• Design clear, scalable interfaces for complex technical data

Requirements:

Experience

• 7+ years of professional UI/UX design experience
• Proven experience designing:
  • Embedded systems UI (mandatory)
  • Desktop / PC applications (mandatory)
• Experience working with complex technical or industrial products
• Hands-on experience designing and delivering coherent, cross-platform user flows across desktop (PC configuration), on-device UI (embedded/HMI), and cloud monitoring — ensuring a consistent end-to-end user journey

Skills & Expertise

• Strong UX fundamentals: information architecture, interaction design, usability
• Strong visual design skills: typography, layout, color, iconography
• Experience with design tools such as:
  • Figma
  • Adobe XD
  • Sketch or equivalent
• Ability to design for engineering-heavy, data-dense applications
• Excellent communication skills and ability to work cross-functionally

We are looking for a Autonomy Engineer to work on autonomous systems with a focus on computer vision, control theory, and data-driven modeling. This role is ideal for someone with strong analytical skills and experience applying data science to real-world autonomy or robotics problems.

Key Responsibilities

• Develop vision-based algorithms for perception and navigation.
• Work on data analysis and sensor fusion for multi-sensor systems.
• Build models and simulations to support system development and testing.
• Process and analyze datasets from cameras, IMUs, and other sensors to improve autonomy performance.
• Collaborate with robotics and software engineers on perception and navigation pipelines.
• Stay up to date with recent research in computer vision, autonomy, and data science.

Required Qualifications

• 2+ years of experience in data science, robotics, computer vision, or a related field.
• Knowledge of control theory, PID controllers, signal processing, and data-driven modeling.
• Understanding of geometric computer vision principles.
• Strong programming skills in Python and good working knowledge of C++.
• Experience working with Linux-based systems.
• Degree in Computer Science, Robotics, Engineering, Mathematics, or another STEM field (or equivalent practical experience).

Nice to Have

• Experience with SLAM or Visual-Inertial Odometry (VIO).
• Familiarity with OpenCV, NumPy, and ML frameworks such as PyTorch or TensorFlow.
• Experience with ROS2, Gazebo, or AirSim.
• Experience with PX4, Betaflight, or ArduPilot.
• Understanding of neural networks for computer vision.
• Interest in reinforcement learning or predictive modeling.

Data Science UA is a service company with deep expertise in AI and Data Science. Our story started in 2016 with the first Data Science UA Conference in Kyiv, and since then, we’ve built one of the largest AI communities in Europe.

About the role:
We are looking for a hands-on Sr. Machine Learning / Computer Vision Engineer with strong practical experience in designing, training, evaluating, and improving vision systems for real-world applications. The ideal candidate combines solid theoretical ML/CV fundamentals with an engineering mindset and is comfortable taking ownership of the full pipeline, from data preparation and experimentation to model optimization and deployment.

Responsibilities:
- Design, train, evaluate, and improve machine learning and computer vision models for real-world production use cases
- Build and maintain end-to-end ML pipelines, including data collection support, preprocessing, feature engineering, training, validation, and inference
- Develop solutions across both computer vision and machine learning tasks depending on business needs
- Perform error analysis, diagnose model weaknesses, and drive improvements in accuracy, robustness, and reliability
- Select and justify appropriate methods and model architectures based on dataset characteristics, product constraints, and deployment requirements
- Work with challenging real-world data, including noisy, limited, imbalanced, or weakly labeled datasets
- Collaborate with engineering and product teams to translate business problems into practical ML solutions
- Contribute to production-ready development with a focus on maintainability, reproducibility, and performance

Requirements:
- 3–5+ years of professional experience in Machine Learning / Computer Vision
- Strong senior-level practical expertise in computer vision, machine learning, and applied model development
- Hands-on experience with tasks such as object detection, image classification, anomaly detection, feature-based approaches, or similar
- Solid understanding of classical ML methods, including tree-based models, linear models, feature engineering, model selection, and evaluation
- Strong Python skills and practical experience with PyTorch, OpenCV, and common ML tooling
- Experience building full ML workflows including data preparation, augmentation, preprocessing, training, validation, testing, and deployment handoff
- Strong understanding of model evaluation, debugging, overfitting, generalization, optimization, and experiment-driven improvement
- Ability to write clean, modular, maintainable code and independently own technical solutions
- Strong analytical thinking, engineering maturity, and problem-solving skills

Nice to Have:
- Experience in adjacent ML domains such as time-series, audio, or NLP
- Experience with embedding-based methods, metric learning, retrieval systems, or memory-bank approaches
- Practical experience with model optimization techniques such as quantization, pruning, distillation, or related efficiency-focused approaches
- Experience working with real-world industrial datasets and ambiguous problem formulations
- Knowledge of software engineering best practices, reproducible experimentation, and pipeline design

We offer:
- Free English classes with a native speaker and external courses compensation;
- PE support by professional accountants;
- Medical insurance;
- Team-building events, conferences, meetups, and other activities;
- There are many other benefits you’ll find out at the interview.

Company
The company’s core focus is lead generation in the iGaming domain, primarily through SEO-driven solutions. They work with long-term client projects and are currently expanding their internal development team.

Position
We are looking for a Lead / Senior Full-Stack Engineer(PHP/Wordpress/JS) to join an established front-end team. The role requires a senior-level engineer who can take ownership of complex tasks, contribute to technical decisions, and support overall code quality.

Full-time, long-term cooperation

Location
Remote
Candidates must be located within the EU time zone

Language
English – sufficient for regular communication with the team

Experience
5–10 years of commercial development experience

Team & Projects
You will join a stable, long-term team working on multiple client projects focused on lead generation platforms. The team already includes several front-end developers, and we are looking for a more senior specialist who can take ownership of complex tasks and support overall technical quality.

Tech Stack

• PHP (Symfony)
• WordPress
• JavaScript
• HTML / CSS

Key Requirements

WordPress (advanced level)

• Experience building complex WordPress-based systems (beyond simple blogs)
• Hands-on experience with WordPress Multisite
• Custom plugin development using:
  • Object-Oriented Programming
  • Composer / autoloading
  • Typed properties and variables
  • Custom database tables
• Experience creating custom caching solutions for high-performance systems
• Strong experience with WP_Query for complex queries
• Experience building custom tools to improve the WordPress developer or admin experience

PHP

• 5+ years of experience with modern PHP (8+)
• Experience with phpcs / phpcbf
• Experience defining custom sniffs or working with PHPParser / AST
• Experience with reflection and introspection
• Solid understanding and practical use of DTOs and Value Objects

General

• Experience working with Core Web Vitals and performance optimization

Start Date
ASAP

Our Customer is a top-tier Digital Innovation and Software Engineering company delivering cutting-edge solutions for fast-growing businesses and enterprises. We specialize in FinTech, Renewable Energy, and Healthcare, with deep expertise in AI, Blockchain, and Data Science.
 

With a global team of 200+ professionals, we build innovative digital products that create sustainable business value and strengthen our clients’ competitiveness in an evolving digital landscape.
 

Project Overview

You will be working on one of the first licensed digital asset banks powered by Blockchain.
The product enables a simplified and secure process for capital raising, allowing companies and investors to:

• Create and manage digital assets
• Launch and manage offerings
• Buy, trade, and earn crypto assets

Our team is responsible for delivering one of the core services of the platform.

Responsibilities

• Collaborate closely with the team to build and evolve a mobile application
• Develop a new mobile app using React Native and Expo, ensuring scalability and maintainable architecture
• Improve and extend application functionality, including payment processing optimization
• Implement pixel-perfect UI based on provided designs
• Participate in planning, discovery, and implementation of new features
• Own features end-to-end: development, testing, and documentation

• Ensure high-quality, stable, and well-tested deliverables

   

Requirements

• 8-10 years of hands-on experience with React Native and TypeScript
• Strong knowledge of modern React patterns and state management (e.g. Zustand, Jotai Toolkit)
• Experience with React Query or similar server-state libraries
• Experience with React Navigation or Expo Router
• Understanding of secure storage solutions and basic mobile security concepts
• Familiarity with Expo modules and config plugins (optional but appreciated)
• Ability to work with native modules and basic Xcode / Android Studio configuration
• Good understanding of unit and integration testing for React Native apps
• Strong sense of ownership and high quality standards

Nice to Have

• Experience in banking or financial applications
• Experience with enterprise-level CI/CD for mobile

• Proactive communication and creativity in designing technical solutions

   

What They Offer

• Long-term team focus with transparent communication and minimal bureaucracy
• Opportunity to build niche expertise in FinTech, Healthcare, and other domains
• Continuous learning: personal development plans, roadmaps, and fast-track growth
• Strong internal career development culture
  (80% of executives were promoted internally)
•  

Benefits & Perks

• Flexible working schedule
• Fully remote work model
• Medical insurance
• Paid vacation
• Paid sick leave
• Paid public holidays

We are seeking a Senior Backend Developer who combines strong technical expertise with sharp business understanding and leadership potential. The ideal candidate is not only an excellent Python/Django developer, but also a fast learner who can quickly grasp complex business domains, such as mortgage and financial workflows, and translate them into robust, scalable software solutions. This role is perfect for someone who thrives in dynamic environments, communicates effectively across teams, and takes ownership of projects from concept to delivery.

Job requirements

Key Responsibilities:

• Lead technical delivery by collaborating with product managers and business stakeholders, converting business goals into detailed, executable backend solutions;
• Design and implement scalable backend systems and APIs using Python and Django;
• Architect and maintain PostgreSQL data models, including schema design and migrations;
• Build and optimize ETL processes and workflows to support financial operations;
• Ensure data quality and compliance standards are met in all integrations and system interactions;
• Participate in sprint ceremonies, architectural planning, and technical discussions;
• Monitor system performance, identify bottlenecks, and implement optimizations.

Requirements:

• 5+ years of hands-on backend development experience with Python and Django;
• Strong experience designing and delivering APIs in production systems;
• Solid understanding of PostgreSQL (schema design, migrations, optimization);
• Proven experience with ETL processes, data workflows, and integration of external systems;
• Strong knowledge of object-oriented programming and software design principles;
• Familiarity with Agile/Scrum methodologies and iterative delivery;
• Ability to work independently while also mentoring and supporting other developers;
• Excellent communication and problem-solving skills, with the ability to quickly grasp complex business domains.

Nice to Have:

• Experience working in the financial services domain;
• Experience with Loan Origination System (LOS), specifically ICE Mortgage Technology Encompass.

🎨✨ We're Hiring: Marketing Graphic Designer 

📍 Warsaw · Hybrid · Gaming Industry

If you live and breathe design — and love the idea of your work being seen by millions of players — this one's for you.

We're a fast-growing social casino gaming startup, and we're looking for a talented Marketing Graphic Designer to join our Warsaw-based team.

🕹️ What you'll be doing: 

— Designing high-impact creatives for UA & social campaigns

 — Building playable ad concepts, mockups & storyboards

 — Working with AI tools (Midjourney, DALL·E) alongside Adobe suite 

— Preparing assets for animation & final production 

— Applying UX/UI, color theory & typography at a high level

🎯 You're a great fit if you have: 

— 3–4+ years in marketing design (gaming or mobile apps preferred) 

— Strong command of Adobe CC (PS, AI, AE) + Figma 

— Hands-on experience with AI design tools 

— A feel for casual game mechanics & visual storytelling 

— Animation skills in AE / Blender / Cinema 4D — big plus 🙌

💼 Hybrid · Warsaw 💰 Salary — discussed individually 📁 Portfolio required

PulsePaw is a community of IT professionals united by a shared vision of creating outstanding projects. We focus on delivering turn-key products in the FinTech industry. Our approach enables us to offer not only full-cycle software development but also product and business development services, including marketing accompaniment.

At our company, you'll have the opportunity to grow, engage in meaningful projects, and see the real impact of your contributions.

About the project: You’ll be working on a young, but actively developing cryptocurrency project. It’s a young global product built on a microservices architecture with a constantly expanding number of smart contracts. 

The tech stack: Node.js, TS, Nest.js, BTC, ETH, and SOL, MySQL/PostgreSQL, RabbitMQ, Kubernetes. The product follows Domain-Driven Design (DDD), PCI DSS standards, and uses Feature Branch Flow.


Responsibilities:
Backend Development: Develop a new backend for an existing project.
Full Development Cycle: Take ownership of the entire development process.
Requirements & Architecture: Define technical requirements and system architecture.
Product Release: Ensure successful product release and ongoing maintenance.
Product Logic: Develop and maintain business logic features.
Infrastructure: Handle infrastructure-related tasks such as deployment, scaling, and performance optimization

Must Have:
Experience: 3+ years of experience in program engineering, and a deep understanding of the crypto and blockchain industry.

Blockchain: Experience in smart contract development and SOL, TON, SUI, BTC, TRX.
Blockchain Practical Knowledge: At least 1 year of experience with WEB-3.
Programming: Proficiency in Node.js, TypeScript, and Nest.js.
Databases: Experience with relational databases (MySQL, PostgreSQL).
English: Intermediate or higher level of English.
Message Queues: Hands-on experience with RabbitMQ.
Job Queues: Proficiency in Bull (Redis).
Architecture & Principles: Knowledge of DDD, EDA, SOLID, OOP, and Design Patterns.


Conditions and Benefits:
Remote-friendly culture: Work from anywhere in the world with a flexible schedule in CET timezone.
Opportunities for growth: Take advantage of paid training, English-speaking clubs, support for certifications, and participation in professional events.
Room for ideas and ownership: We work in teams with full autonomy, empowered by our clients to take complete ownership of our projects.
Benefits and compensation: Partial coverage of coworking space rent and psychotherapy, 50% of the cost of professional training and certifications.
Tech-Driven Environment: Work with modern internal tools (no legacy systems).

    RESPONSIBILITIES:

• Sell retargeting solutions to operators, affiliate and media companies in the gambling industry;
• Build trusting relationships with clients, identify their objectives and needs (retention, reactivation, upsell);
• Formulate and present individual offers.
• Lead deals from first contact to signing and launching campaigns;
• Actively participate in industry events, conferences and networking;

• Work in conjunction with media buying, account and tech teams.

  
  REQUIREMENTS:

• Experience in sales of digital services from 1 year, especially in Retargeting / Programmatic;
• Understanding of sales funnel and basic advertising models (CPC, CPM, CPA, CPL);
• Knowledge of retargeting: segmentation, frequency, attribution, pixels, etc;
• Ability to persuade, present, negotiate and work with objections;
• Build trusting relationships with customers, identify their objectives and needs (retention, reactivation, upsell);
• Experience with CRM and Google Workspace;
• English language - from B2.

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:

We power a proprietary, machine-learning-driven platform for programmatic user acquisition and retargeting in the mobile app space. The system processes tens of terabytes of raw data each day and generates millions of ad recommendations in real time. It handles millions of requests per second, delivering low-latency, high-throughput services that directly impact client growth and revenue.

Operating at this scale requires continuous innovation around distributed architecture, performance optimization, security and data protection. Our clients are major app developers seeking granular insights and measurable ROI, so robust engineering is critical to maintaining service quality and enabling rapid feature rollout under heavy load.

About the Role:

As Full Stack Team Lead, you will own the design, implementation and maintenance of our core real-time ad-serving infrastructure. You will rally a globally distributed team of four engineers behind a shared vision, drive technical direction and ensure high performance, availability and security. This role demands a hands-on leader who spends roughly half their time coding, reviewing designs and guiding end-to-end project delivery, and half their time on team management, sprint planning and stakeholder collaboration.

You will work closely with Executive, Product, Data and Design teams to define optimal solutions, integrate third-party APIs, and shape the roadmap for scalable growth. Your contributions will directly affect system reliability, client satisfaction and the company’s ability to scale into new markets.

Key Responsibilities:

• Design, implement and operate large-scale, highly available, real-time (low-latency) services using Node.js, TypeScript, React, Redis and Kubernetes on AWS.
• Lead and mentor a team of four distributed engineers; conduct code reviews, design reviews and knowledge-sharing sessions.
• Collaborate with executives, product managers, data scientists and designers to translate requirements into technical solutions.
• Design, develop and integrate RESTful APIs and third-party services.
• Plan, groom and manage agile sprint cycles; track progress and adjust priorities to meet delivery goals.
• Define and enforce security best practices and data protection policies across services.
• Oversee on-call rotation and incident response; maintain low alert rates and rapid recovery processes.
• Manage team operations including onboarding, offboarding, performance reviews and hiring support.

Required Competence and Skills:

• 6+ years of professional experience in backend (Node.js preferred) and frontend development (React, Vue or Angular).
• 2+ years in a people-management or team-lead role, with direct experience conducting one-on-ones and performance reviews.
• Proficiency with SQL and NoSQL databases in production environments.
• Experience deploying and operating services on a major cloud platform (AWS, Google Cloud or Azure).
• Deep understanding of the software development lifecycle and agile methodologies.
• Strong problem-solving skills, self-sufficiency and a proactive “can-do” attitude.
• Fluent English communication skills, both written and verbal.

Nice to Have:

• Experience coordinating with offshore development teams.
• Background in web-based SaaS platforms.
• Exposure to large-scale data processing or Big Data technologies.
• Hands-on familiarity with Kubernetes at production scale.

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 invite Senior Full-Stack Developer with expertise in Go and React to join our team for remote, long-term cooperation.

To help build and scale a next-generation B2C digital platform.

Requirements:

• 3+ years of comprehensive full-stack development experience
• 2+ years experience with Go(Golang) and React.js
• Strong and confident knowledge of TypeScript.
• Proficiency in both SQL and NoSQL database systems
• Upper-Intermediate level of English proficiency (reading, writing, and speaking)
• Remote team members are expected to travel to our EU office from time to time for on-site meetings.
• Proven ability to perform autonomously and collaborate within cross-functional teams
• Responsible approach to assigned tasks and deadlines

We offer:

• Flexible work model allowing remote, on-site, or hybrid options.
• Optional relocation to our EU office, with complete legal support throughout the process.
• Paid vacation and sick leave
• Comprehensive health insurance and sports membership reimbursement
• Reimbursement of necessary transportation expenses
• Friendly and collaborative atmosphere, dedicated mentorship, various performance-based bonuses and company benefits
• Multinational team of expert software engineers
• Free participation in educational programs and professional courses

• English lessons with native-speaking instructors.

   

Further information will be shared at the interview stage.

Kindly add your Telegram username to your CV.

Data Science UA is a service company with strong data science and AI expertise. Our journey began in 2016 with uniting top AI talents and organizing the first Data Science tech conference in Kyiv. Over the past 9 years, we have diligently fostered one of the largest Data Science & AI communities in Europe.

About the role:
We are looking for a Python Software Engineer to join our team and help us build an on-premise software pipeline for real-time computer vision. The system ingests camera streams (primarily RTSP), stores frames in a shared data layer, runs CV/AI engines for preprocessing and inference, applies inference logic to produce decisions, and sends results to Database/Portal/Alerting/Control integrations.

Responsibilities:
- Build and maintain the Camera Module to reliably ingest RTSP streams, decode frames, and handle reconnect/keep-alive/packet loss.
- Implement the Shared Data layer for raw and processed frame exchange across processes with backpressure and safe lifecycle management.
- Integrate and operate CV/AI Engines in Python (preprocess, inference, postprocess) with configurable model loading and runtime selection.
- Develop the Inference Logic layer that orchestrates cropping, batching, filtering, classification, and decision output formatting.
- Implement connectors for Database & Portal (event persistence, evidence references) and for Alerting & Control (events/hooks for downstream automation).
- Ensure production readiness on Linux with observability (logs/metrics), health checks, and robust error handling.

Requirements:
Must-have:
- Strong Python, OOP, clean architecture, typing preferred.
- Solid experience with multiprocessing/concurrency (process lifecycle, IPC patterns, queues/shared memory).
- Comfortable working in Linux (systemd/service mindset, networking basics, profiling/debugging).
- Familiarity with CV/AI tooling, and some related Python libraries such as numpy, opencv (cv2), and torch or tensorflow.
- Ability to work with streaming data and reliability constraints (timeouts, retries, resource cleanup).
Should-have:
- Experience with RTSP/RTP streaming and common issues (UDP vs TCP interleaved, jitter, packet loss, camera timeouts).
- Performance optimization (profiling, memory management, zero-copy patterns).
- Exposure to inference acceleration stacks (TensorRT/OpenVINO) or GPU deployment.
- Experience designing event schemas and integration with DB/message queues.

We offer:
- Free English classes with a native speaker and external courses compensation;
- PE support by professional accountants;
- Medical insurance;
- Team-building events, conferences, meetups, and other activities;
- There are many other benefits you’ll find out at the interview.

SaaS Platform · React + Fastify · PostgreSQL

About the Project

We’re building a sophisticated AI-powered matching and analytics platform that uses multi-dimensional profiling and advanced algorithms to optimize decision-making.

The product has a validated prototype and real traction. We’re now moving into production hardening and scale, and we’re looking for a senior developer to take ownership of the backend architecture while actively evolving the frontend.

A core part of this role is working AI-first: we expect you to use Claude Code as a primary development tool, not as an experiment or side-assist.

The Role

You’ll design and implement the full production backend for our React-based SaaS platform, replacing mock data with real infrastructure:

• databases
• authentication
• APIs
• AI integrations
• deployment pipelines

You’ll also contribute directly to the frontend where needed.

Claude Code is a hard requirement.

We expect you to be comfortable (or explicitly motivated) to:

• scaffold systems with AI
• refactor and evolve large codebases using AI assistance
• co-design architecture with Claude
• use AI for documentation, tests, migrations, and reasoning

This is an AI-augmented engineering role, not a traditional “write everything by hand” position.

What You’ll Build

Backend Architecture

• Fastify REST API

  High-performance Node.js framework with TypeScript-first design and built-in validation

• Database

  PostgreSQL 15 with Prisma ORM (type-safe queries + automated migrations)

• Authentication & Authorization

  JWT with refresh tokens, httpOnly cookies, and role-based access control

• Caching Layer

  Redis for sessions and performance optimization

• Validation & Types

  Shared Zod schemas between frontend and backend

• API Design

  RESTful endpoints with structured error handling and consistent responses

Infrastructure & DevOps

• Monorepo Setup

  pnpm workspaces separating frontend, backend, and shared packages

• CI/CD

  GitHub Actions with automated tests, security checks, and deployments

• Environments

  Isolated staging and production environments

• Deployment
  • Frontend: Vercel (CDN + edge)
  • Backend: Railway or Supabase (auto-scaling)

• Containerization

  Docker-based local and production environments

Integrations

• OpenAI API

  Document parsing, analysis, and intelligent matching logic

• Email Services

  Resend or SendGrid with template-driven transactional emails

• File Storage

  Secure uploads via Supabase Storage or AWS S3

• Monitoring & Analytics

  Sentry (errors) and PostHog (product analytics)

Testing & Quality

• Backend Testing

  Vitest for unit and integration tests with test databases

• End-to-End Testing

  Playwright covering full user workflows

• Code Quality

  ESLint, Prettier, Husky pre-commit hooks

• API Documentation

  Auto-generated OpenAPI specs from Zod schemas

Required Experience

• 5+ years of professional full-stack development
• Strong experience or strong willingness to work AI-first
• Hands-on experience with Claude Code for real production work
• Advanced React and modern frontend practices (React 19, hooks, Zustand)
• Node.js backend development (Fastify preferred, Express acceptable)
• PostgreSQL schema design, indexing, and performance optimization
• Prisma ORM or similar type-safe database tooling
• RESTful API design with authentication (JWT, OAuth concepts)
• Git-based workflows and CI/CD pipelines
• Testing across the stack (unit, integration, E2E)

Tech Stack

Frontend (Existing)

• React 19, Vite 7, React Router 7
• Ant Design 6, Zustand 5
• React Flow, Recharts, @dnd-kit
• Vitest, Playwright

Backend (Developing)

• Fastify
• PostgreSQL 15 + Prisma
• Redis
• Zod
• JWT authentication
• Helmet (security)

Infrastructure

• pnpm workspaces (monorepo)
• Docker + docker-compose
• GitHub Actions
• Vercel (frontend)
• Railway / Supabase (backend)

Third-Party APIs

• OpenAI GPT-4 API
• Resend / SendGrid
• Supabase Storage
• Sentry

Highly Desirable

• Deep Fastify experience
• Prisma with complex relational schemas
• Monorepo experience (pnpm, Yarn workspaces, Turborepo)
• Production TypeScript at scale
• Ant Design customization
• Docker for both dev and production
• OpenAI / LLM integration experience
• Vercel and Railway deployments
• Database migration strategies
• Strong opinions on AI-assisted development

Required Skills (Experience Level)

• Node.js (Fastify / Express) — 4+ years
• TypeScript — 4+ years
• PostgreSQL (schema design, indexing, optimization) — 3+ years
• Prisma ORM — 2+ years
• React (hooks, functional components) — 3+ years
• Zustand or similar state management — 1+ year
• REST API design & backend architecture — 4+ years
• Authentication (JWT, refresh tokens, RBAC) — 3+ years
• Docker (local & production workflows) — 2+ years
• CI/CD (GitHub Actions or similar) — 2+ years
• Monorepo workflows (pnpm / yarn workspaces) — 1+ year
• Testing (Vitest / Jest / Playwright) — 2+ years
• OpenAI / LLM API integration — 1+ year
• Claude Code (AI-assisted development workflows) — 1+ year

Delasport is an iGaming Software company providing Sports Betting & Online Casino software, and turnkey B2B solutions. Established in 2010, Delasport delivers a one-stop-shop solution of Sports Betting and Online Casino from a White-Label, with a full range of management services to a Plug&Play iFrame and a complete Turnkey. We are establishing an R&D centre in Kyiv, and are looking for top talents to join our team.

As a Senior PHP Engineer, you will dive into the complex but rewarding world of Sports and Online gaming, integrations, real-time calculation, scrapping data, and reporting, all at a massive scale.

TECHNOLOGY STACK: PHP 8, Symfony 6, Node.js, API REST, MongoDB, MySQL, Kafka, Docker, Kubernetes

RESPONSIBILITIES

• Participate in the design and decision-making of technical solution implementation
• Troubleshoot, analyze, provide workarounds and resolve various software problems
• Mentor and train new team members

REQUIREMENTS

• 5+ years experience in web application development
• Advanced architecture understanding both on theoretical and practical levels
• Deep knowledge of PHP programming
• Working experience with the Symfony framework
• Knowledge of the entire web stack and how each part impacts performance and reliability
• Exhaustive knowledge of database design and implementation
• Design and business insight
• Commitment to quality, performance, continuous improvement, and efficiency
• Analytical mindset and good problem-solving skills
• Experience in taking ownership
• Upper-intermediate level of English

NICE TO HAVE

• Gaming and sports industry experience
• NodeJS, Redis
• Experience in web application security and performance tune-up
• ELK, Kibana

WHAT WE CAN OFFER YOU

• Modern office in Podil with an uninterruptible power supply and the Internet
• Personal time off (21 business days of paid vacation, paid days on special occasions, sick leaves, emergency days off)
• Public holidays
• Health and life insurance with our broker, available starting from the month following the employee’s start date with the company
• Modern technical equipment
• English courses with native speakers
• Ukraine-based educational programs
• Sports activities reimbursement
• Corporate entertainments
• Happy hours on Fridays
• Gig contract support