Jobs Fullstack

English B2+
A university degree in computer sciences.

Poland, Warszawa based candidates only.
Mandatory domain expertise in Finance and Insurance. Must understand financial logic and data integrity.

• 8+ years of experience in software development with a deep focus on Back-end architecture.
• Node.js
• Expertise in PostgreSQL and raw SQL: Experience working without ORMs, managing migration-driven schemas, and implementing immutable double-entry ledgers.
• Deep knowledge of Next.js 16 (App Router) and TypeScript: Proficiency in building scalable architectures using API route handlers and service layers in a Serverless environment (Vercel).
• Strong experience with modern Frontend: React 19 and Tailwind v4 (without heavy state-management libraries).
• Practical experience with Fintech integrations: Stripe payments, Auth.js (v5), and complex authentication (Passkeys, TOTP).

Will be a plus:
• Experience with Java
• Experience with AI/LLM integrations .
• Knowledge of regulatory compliance and security standards in Fintech/Insurtech.
• Experience with PDF generation (react-pdf / pdf-lib) and pluggable email provider layers.
• Experience in early-stage startups, moving from MVP to production-grade systems.
• Understanding of Node 24 features and modern web standards

Workload — Full-time
Duration — Long-term
Location — Europe (business trips to Germany every 6 months for 3–4 days). 
Rate — Up to 28 USD/hour

Important: We are looking for a truly senior engineer. Mid-level candidates are unlikely to pass the technical interview.

About the Project

You'll join a long-term enterprise project developing a web-based platform for German leasing companies. The product supports and automates the core business processes of leasing providers and is actively evolving with new features and modernization initiatives.

This is an opportunity to work on a mature enterprise system with modern technologies, high engineering standards, and long-term product development.

Responsibilities

• Design, develop, and maintain full-stack enterprise applications
• Build scalable backend services using Kotlin and Java
• Develop modern, responsive frontend functionality with React
• Improve and modernize existing modules and system architecture
• Optimize application performance and maintain high code quality
• Participate in code reviews and technical discussions
• Collaborate closely with Product Managers, QA Engineers, and DevOps teams
• Contribute to CI/CD and automated testing practices
• Utilize AI-assisted development tools where appropriate

Requirements

• 6+ years of commercial software development experience
• Strong commercial experience with Kotlin
• Strong commercial experience with Java
• Strong commercial experience with React
• Experience building scalable enterprise applications
• Experience with PostgreSQL and/or MongoDB
• Experience with CI/CD pipelines and automated testing
• Experience using AI-assisted development tools
• Strong software engineering fundamentals, clean code practices, and problem-solving skills
• Upper-Intermediate English or higher (B2+)

Nice to Have

• Experience with Node.js

Hiring Process

1. Interview with our recruitment team
2. Client screening interview
3. Technical interview with the client

What We Offer

• Long-term full-time engagement
• Competitive rate of up to 28 USD/hour
• International product environment
• Modern technology stack
• Stable long-term project
• Opportunity to influence architecture and product evolution
• Business trips to Germany approximately once every six months (3–4 days)

Required Hard Skills

• 8+ years of Software Engineering experience
• Strong commercial experience with Node.js
• Strong experience with TypeScript (strict mode)
• Strong experience with React + TypeScript
• Experience with backend frameworks such as Nest.js, Express.js, Koa.js
• Strong understanding of React, including Hooks, Context, rendering behavior, and performance optimization
• Strong experience with state management tools such as Redux, MobX, Zustand, Recoil, or similar
• Strong software design knowledge: OOD, FP, design patterns, SOLID principles
• Practical hands-on experience with AI-assisted development tools such as Claude Code, Cursor, or similar
• Experience building low-latency, high-throughput, highly concurrent systems (real-time processing, hundreds+ of parallel operations)
• Experience working with external APIs and third-party data providers
• Strong understanding of RESTful APIs and GraphQL APIs
• Advanced experience with SQL databases, especially PostgreSQL (transactions, locking, idempotency)
• Experience with database performance optimization, indexing, query optimization, and handling large datasets
• Experience with async / batch processing, scheduled jobs, background workers, queues, retries, throttling, and rate-limit handling
• Hands-on experience with job / message queues such as BullMQ, Redis Streams, Kafka, RabbitMQ, Amazon SQS/SNS, or similar
• Experience with Docker and CI/CD processes
• Experience with AWS or similar cloud platforms (GCP, Azure)
• Experience building systems that require data validation, consistency checks, idempotency, and crash-recovery safeguards
• Understanding of trading, fintech, blockchain, or data-intensive financial systems
• Knowledge of Agile development practices, preferably SCRUM
• Proficient understanding of Git

Required Blockchain / Solana / Copy-Trading Experience

• Solid understanding of Solana internals: transactions, instructions, accounts, blocks/slots, commitment levels (processed / confirmed / finalized), blockhash lifetime, and reorg handling
• Hands-on experience with low-latency Solana execution / trading bots — landing transactions competitively (same-slot / "block-0"), priority fees, and MEV-aware submission
• Experience with real-time Solana data streaming: Yellowstone gRPC (Triton Dragon’s Mouth / Helius LaserStream) and/or shred-level feeds such as Jito ShredStream (awareness of DoubleZero Edge a plus)
• Experience with transaction submission & landing infrastructure: Jito (Block Engine / bundles / tips), Helius Sender, SWQoS (stake-weighted QoS), and specialist senders (0slot / Nozomi / bloXroute)
• Experience with blockchain data / RPC providers such as Helius, Triton, QuickNode, Alchemy, or similar, including multi-provider failover and rate-limit handling
• Familiarity with Pump.fun / PumpSwap: bonding-curve mechanics, AMM pricing, and building instructions from an on-chain IDL
• Understanding of trading metrics: entry/exit, market cap, slippage, hit rate, P&L, and per-position / portfolio risk
• Experience with crypto trading platforms, copy-trading systems, DEX / on-chain execution, or wallet automation
• Experience with secure key management at scale (HD wallet derivation, in-memory signing, secrets isolation) and capital-isolation / fail-safe design

Important: We expect AI tools to be part of your daily workflow. Candidates who primarily rely on traditional development approaches and do not actively use modern AI coding tools are unlikely to be a good fit for this role.

Are you an AI-driven Full Stack Engineer who uses modern AI tools to build faster, ship faster, and solve complex problems more efficiently?
 

At GT Protocol, we're not looking for traditional developers. We're building an AI-first engineering culture where AI is deeply integrated into the development workflow — from architecture and coding to testing, debugging, research, and product delivery.
 

We are looking for a Senior Full Stack Engineer who embraces AI-assisted development and understands how to leverage modern AI tools to maximize productivity and focus on solving real business problems rather than spending time on repetitive tasks.
 

About the Role

You will be working on GT Protocol's AI-powered trading and investment platform, helping build products used by thousands of users across Web3, CeFi, and DeFi ecosystems.
 

This role combines backend development, frontend development, AI integrations, trading infrastructure, blockchain analytics, real-time systems, and modern AI-driven engineering practices.
 

You will participate in designing and building scalable products while actively utilizing AI development tools as part of your daily workflow.
 

What We Expect from an AI-Driven Engineer

• Comfortable using AI coding assistants as a core part of the development process
• Experience working with tools such as Cursor, Claude Code, ChatGPT, Gemini, Copilot, Windsurf, or similar solutions
• Ability to effectively use AI for coding, architecture exploration, debugging, code reviews, documentation, testing, and research
• Strong focus on shipping results rather than maximizing manual coding hours
• Curiosity and willingness to continuously adapt to new AI-driven development workflows
• Understanding that AI is a productivity multiplier, not a replacement for engineering fundamentals
   

We believe the future belongs to engineers who can combine strong technical skills with the ability to leverage AI effectively. Our goal is to build a team that operates significantly faster than traditional software teams while maintaining high engineering standards.
 

Responsibilities and Duties

• Participate in the design, development, and maintenance of a sophisticated AI-powered trading platform serving thousands of users worldwide
• Develop and maintain backend services using Python, FastAPI, PostgreSQL, MongoDB, and Redis
• Build modern frontend applications using React, Next.js, TypeScript, and Tailwind
• Integrate centralized and decentralized exchanges, blockchain networks, and third-party APIs
• Design and implement real-time systems using WebSockets, Socket.IO, asyncio, and event-driven architectures
• Develop AI-powered features, portfolio analytics, trading automation, and market intelligence tools
• Build and maintain Telegram-based products and AI assistants
• Collaborate closely with Product Managers, Designers, AI Engineers, and other Developers
• Participate in architectural decisions, code reviews, and continuous platform improvements
• Ensure high performance, scalability, and security across all platform components
   

Work Experience

• 4+ years of commercial software development experience
• Experience building production-grade web applications and APIs
• Experience working with cryptocurrency, trading, fintech, Web3, or blockchain products
• Experience working in distributed remote teams
• Bachelor's degree will be a plus
   

Required Skills

• Strong Python knowledge, FastAPI, asyncio, aiohttp, websockets, SQLAlchemy 2.x (async), PostgreSQL, MongoDB, Redis
• JavaScript, TypeScript, React 18+, Next.js, Redux / Redux-Saga, Tailwind CSS
• Docker, Docker Swarm, Linux, Git
• JWT, RBAC, bcrypt, OTP authentication flows
• aiogram 3, CCXT, web3.py, Solana SDK, Alchemy, CoinGecko, GeckoTerminal APIs
• Cursor, Claude Code, ChatGPT, Gemini, Copilot, Windsurf, or similar
• Experience integrating external APIs
• Understanding of scalable distributed systems
• Experience with real-time applications
   

Will Be a Plus

• Personal projects
• English – B2+
   

About GT Protocol

GT Protocol (Global Trading Artificial Intelligence) is an AI-powered crypto trading ecosystem founded in 2021 and the ultimate AI infrastructure for trading.

GT Protocol enables users to build, backtest, optimize, launch, and execute trading strategies using fully automated AI-driven bots across centralized and decentralized crypto markets (CEX and DEX). Its products provide AI-powered infrastructure for strategy creation, optimization, backtesting, and automated execution across the crypto trading ecosystem.
 

Why GT Protocol?

— Over 100,000 users worldwide trust our products.

— Our platform combines AI, blockchain, trading infrastructure, and Web3 technologies into a single ecosystem.

— We process millions of market data events and integrate with major exchanges and blockchain networks.

— Our team includes experts from Europe, Asia, and the United States working remotely and collaboratively across multiple time zones.

— GT Protocol is backed by industry-leading investors and partners, including BNB Chain, Animoca Brands, ChainGPT, DAO Maker, CoinPayments, and others.

— We are regularly featured by major crypto and technology media and participate in leading blockchain conferences worldwide.

— You'll work on products at the intersection of AI, fintech, trading, and Web3 while helping shape the future architecture of the platform.

Currently, our team consists of talented professionals located across multiple countries. Our main office is based in Odessa, Ukraine; however, many team members work remotely worldwide.

Join something big — be a part of GT Protocol and help build the future of AI-powered investing.

US Company is searching for a Senior Full-Stack Engineer (AI Platform) to join an AI-first product company building an advanced communications platform powered by Large Language Models (LLMs). This is an exciting opportunity to work across the full technology stack, designing scalable backend services, modern user interfaces, cloud infrastructure, and AI-powered features in close collaboration with a US-based engineering team. Full-time, official contract, remote work, and flexible schedule.

Brief project description:
The product is an AI-driven communications platform that enables businesses to automate and enhance customer interactions through voice, messaging, and intelligent workflows powered by modern LLM technologies.

Responsibilities:

• Design, develop, and maintain end-to-end product features across frontend and backend.
• Build scalable backend services using Python and Node.js.
• Develop responsive and intuitive user interfaces using modern frontend technologies.
• Design and optimize PostgreSQL schemas, queries, and database migrations.
• Build, deploy, and maintain cloud infrastructure on AWS.
• Integrate LLM capabilities into production features using prompt engineering best practices.
• Develop and maintain automated unit, integration, and end-to-end tests.
• Participate in architecture discussions, code reviews, and sprint planning.
• Collaborate closely with Product, Design, and US-based Engineering leadership.
• Troubleshoot production issues and participate in on-call rotations when necessary.
• Continuously improve software quality, performance, and reliability.

Required skills (must have):

• 5+ years of professional software engineering experience, including at least 3 years as a Full-Stack Engineer.
• Strong backend development experience with Python and Node.js.
• Solid experience designing REST APIs and scalable backend architectures.
• Production experience with PostgreSQL including schema design, indexing, query optimization, and migrations.
• Hands-on experience deploying and operating applications on AWS (EC2, Lambda, RDS, S3, IAM, CloudWatch or similar services).
• Practical experience integrating LLMs into production applications through prompt engineering.
• Experience building modern, responsive UI using contemporary frontend frameworks.
• Strong knowledge of automated testing (pytest, Jest, Playwright, Cypress or similar).
• Excellent spoken and written English.
• Ability to work with several hours of overlap with US business hours.

Would be considered as a plus:

• Experience with Twilio (Programmable Voice, Messaging or Verify).
• Experience building Voice, SMS, RCS or Apple Messages for Business solutions.
• Experience working in Agile/Scrum environments using Jira.
• Experience building AI-first SaaS products.
• Experience designing distributed cloud-native systems.

Work conditions:

• 100% remote work.
• Full-time (40 hours per week).
• Official contract.
• Flexible schedule with required overlap with US business hours.
• Participation in an on-call rotation for production incidents.

Interviewing / Hiring process:
Step 1 - preliminary interview (main questions) - 45 mins
Step 2 - internal technical interview - 60 mins
Step 3 - technical interview with Team Leader - 60 mins

US Company is searching for a Senior Full-Stack Engineer to join an innovative product team developing an AI-powered SaaS platform. This is an exciting opportunity to work with modern cloud technologies, Large Language Models (LLMs), and scalable web applications in a distributed international team. Full-time, official contract, remote work, and flexible schedule.

Brief project description:
The product is SaaS, which enables businesses to automate and enhance customer communications through AI-powered workflows and modern communication technologies.

Responsibilities:

• Design, develop, and maintain end-to-end product features across frontend and backend.
• Build scalable backend services using Python and Node.js.
• Develop responsive, intuitive, and accessible user interfaces using React, Vue.js, or similar modern frontend frameworks.
• Collaborate with Product and Design to deliver high-quality user experiences.
• Integrate LLM APIs and AI-powered capabilities into production applications.
• Build, deploy, and maintain applications and cloud infrastructure on AWS.
• Develop and maintain automated unit, integration, and end-to-end tests.
• Participate in architecture discussions, code reviews, sprint planning, and technical decision-making.
• Troubleshoot production issues and continuously improve software quality, performance, and reliability.
• Collaborate closely with engineers across the team, contributing wherever needed to support successful product delivery.

Required skills (must have):

• 7+ years of professional software engineering experience, including significant experience as a Full-Stack Engineer.
• Strong backend development experience with Python and/or Node.js.
• Strong experience with React, Vue.js, or similar modern frontend frameworks.
• Experience designing and developing REST APIs.
• Experience building and deploying applications on AWS.
• Experience working with LLM APIs or AI-powered applications.
• Experience with automated testing frameworks and modern development practices.
• Excellent spoken and written English.
• Ability to work with several hours of overlap with US business hours.

Would be considered as a plus:

• Experience with PostgreSQL.
• Experience with Twilio or other communications platforms.
• Experience working on enterprise SaaS products.
• Experience working with distributed international teams.
• Experience with Agile/Scrum development methodologies.

Work conditions:

• 100% remote work.
• Full-time (40 hours per week).
• Official contract: salary, sick-leave days, holidays, vacations.
• Flexible schedule with overlap with US business hours.

Interviewing / Hiring process:
Step 1 - preliminary interview (main questions) - 45 mins
Step 2 - internal technical interview - 60 mins
Step 3 - technical interview with Team Leader - 60 mins

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 developing a platform with a diverse and evolving set of modules and features. The platform includes existing modules that are being improved, as well as large new epics that provide completely new functionality for customers. One concrete example mentioned is the development of a new module for vendor risk management. The product roadmap is heavily focused on automation, intelligent automation, and the integration of AI features.

Key Requirements:
🔹7+ years in Node.js and React, with experience building and operating production services at a meaningful scale;
🔹Microservices Expertise: Proven production experience with microservices architecture;
🔹Database Knowledge: Strong hands-on experience with MongoDB. Strong skills with relational and non-relational databases;
🔹API Development: Experience building and integrating REST APIs;
🔹Strong proficiency with AI coding tools (Claude Code, Copilot) and modern AI-assisted development practices as part of day-to-day work;
🔹Cloud Platforms: Familiarity with AWS or similar providers;
🔹Leadership: Ability to mentor and lead technical projects;
🔹Knowledge of containerization tools (Docker, Kubernetes) is a strong advantage;
🔹Proficient in software design principles and patterns with a motivated, self-driven approach;
🔹English – Upper-Intermediate or higher.

Will be plus:
🔹Experience developing high-scale SaaS solutions;
🔹Experience developing AI Features (Agents, GenAI, Lang etc.);
🔹Deep understanding of CI/CD and QA automation processes;
🔹Academic excellence in Computer Science, Software Engineering, or related fields

What you will do:
🔹 Build & Design: Develop cloud-based platform using cutting-edge technologies such as AWS, microservices, and containerized solutions;
🔹 Architect Solutions: Participate in architectural decisions, research, and design to deliver scalable and robust software;
🔹 Full-Stack Development: Implement backend logic, create intuitive frontends, and integrate with third-party APIs;
🔹 Collaborate: Work closely with product, stakeholders, and internal teams to ensure a seamless, efficient platform;
🔹 Lead & Mentor: Guide junior developers, promote knowledge sharing, and maintain coding standards;
🔹 Optimize: Continuously improve the platform’s efficiency, scalability, and maintainability, while staying updated on industry trends.

Interview stages:
🔹 Interview with recruiter;
🔹 Intro interview;
🔹 Initial interview;
🔹 Technical interview;
🔹 Two short interviews with PM;
🔹 Reference Check;
🔹 Offer Stage.

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.

Workflow is a Ukrainian digital company providing a full range of online services for our businesses across Canada and the United States — from web design and development to marketing and branding. We operate in industries such as Appliance Services, HVAC, Plumbing, Moving, and Digital Services, and we are continuously expanding.
 

We have launched the development of our own internal CRM system, designed to support and scale all Workflow businesses in Canada. This is a greenfield product with real business impact and long-term vision.
 

We are looking for an experienced Technical Lead to drive the architecture, design, and delivery of high-quality technical solutions. This is a brand-new role for our company — a unique opportunity to shape the product, define technical standards.

About the Role:

This role requires strong backend expertise in Java, deep frontend experience with React, and the ability to act as a technical authority for the development team. The ideal candidate combines hands-on technical excellence with strong leadership, communication, and problem-solving skills.
 

Key Responsibilities:

• Act as the primary technical reference and mentor for the development team.
• Provide hands-on contributions to the product, including implementing solutions in critical areas of the application.
• Review, define, and evolve the product’s architecture and technology stack.
• Propose and execute technical improvements to enhance scalability, performance, and maintainability.
• Promote and enforce best practices across the software development life cycle.
   

Technical Skills:

• Advanced backend development experience with Java, including frameworks such as Spring Boot or similar.
• Extensive frontend development expertise using React (Vite).
• Strong understanding of software architecture patterns and design principles.
• Experience working with both relational and non-relational databases.
• Knowledge of cloud infrastructure and modern deployment practices.
   

Competencies:

• Proven leadership skills with the ability to mentor and guide engineering teams.
• Strong analytical and problem-solving mindset with a proactive approach to challenges.
• Ability to balance hands-on technical work with strategic decision-making.
• Upper-intermediate English
• Ability to clearly explain complex technical concepts to both technical and non-technical stakeholders.
   

Experience:

• Demonstrated experience in a similar technical leadership role.
• Proven background in defining, reviewing, and evolving software architecture for complex systems.
• Experience with mobile development projects (hybrid or native) is a plus.
   

What We Offer:

• Flexible working hours — start between 9:00–11:00 and finish between 18:00–20:00
• Supportive and friendly management — we value mental well-being, collaboration, and a positive team culture.
• 21 paid vacation days per year.
• 5 paid sick days per year.
• 8 public holidays per year (in accordance with Ukrainian law).
• Stable and competitive salary, paid on fixed dates twice a month, based on your experience and skills.
• Freedom to experiment with new ideas and tools — we support innovation and initiative.
• Professional growth support — we cover 50% of the cost of courses and certifications related to your professional development.
   

We’re looking forward to receiving your resume! 😀

Workflow

We take a leap, we make it big

Playtech‘s Marketplace and Engagement Games Product Team is looking for an experienced Fullstack Team Leader with strong full-stack web development background, excellent communication skills, and a proven ability to lead teams and deliver reliable, maintainable, customer-facing software.

Team Leader will lead the engineering team responsible for two established Playtech products: Marketplace, a casino content management product, and Engagement Games, a real-time gaming campaigns product.

The role combines engineering leadership, people management, and hands-on technical understanding. The Team Lead will guide the team in delivering high-quality full-stack solutions, support technical decision-making, improve engineering practices, and ensure effective collaboration with Product, Architecture, QA, DevOps, Delivery Management, and other teams.

Your influential mission. You will... 

• Lead and coordinate the full-stack engineering team.
• Own day-to-day progress tracking, and risk management.
• Work closely with Product, Architecture, QA, DevOps, Delivery Management, and external teams.
• Converting product requirements and business priorities into clear, well-defined technical tasks and structured delivery plans.
• Participate in solution design, technical discussions, architectural reviews, and implementation planning.
• Ensure effective engineering practices: code review, testing, documentation, CI/CD, observability, and production readiness.
• Mentor and coach engineers through feedback, technical guidance, code review, and regular communication.
• Improve team processes, engineering workflows, release predictability, and overall team efficiency.
• Contribute hands-on when needed in complex investigations, troubleshooting, or critical delivery situations.

Components for success. You...

• Bring 7+ years of professional software engineering experience, preferably in full-stack web development.
• Have 2+ years of experience in a leadership role, such as Team Lead, Engineering Lead, Tech Lead, Development Lead, or similar.
• Demonstrate strong experience with modern JavaScript / TypeScript web applications.
• Possess solid practical knowledge of React, Redux, ES6+, HTML5, CSS3, Node.js, REST APIs, MongoDB, and Redis.
• Have experience delivering customer-facing or business-critical web applications.
• Show a strong understanding of full-stack architecture, performance, testing, CI/CD, and production support.
• Have experience working with highly available, performance-sensitive, distributed, or event-driven systems.
• Are experienced in Agile environments and collaborating with cross-functional and distributed teams.
• Demonstrate strong ownership, accountability, and an engineering leadership mindset.
• Are able to lead people, delivery, and technical discussions effectively.
• Apply good technical judgment and guide teams toward simple, maintainable solutions.
• Communicate clearly with both technical and non-technical stakeholders.
• Show strong planning, prioritization, dependency management, and risk communication skills.
• Have the ability to mentor engineers and support their professional growth.
• Take a pragmatic approach to balancing delivery timelines, quality, and long-term product health.
• Pay high attention to detail and bring a collaborative, constructive approach to feedback and conflict resolution.

You'll get extra points for...

• Experience improving engineering processes, delivery metrics, release predictability, or team performance.
• Experience with frontend architecture, reusable component libraries, design systems, or micro-frontends.
• Experience in gaming, gambling, casino platforms, campaign management, or real-time engagement products.
• Experience with observability, monitoring, logging, and production incident analysis.

Thrive in a culture that values...   

• Technical excellence and engineering ownership.
• Initiative-taking and confident decision-making.
• Strong team environment and the ability work with the most recent market-leading technologies.
• Initiative-taking and confident approach at the workplace.
• Global scope and inclusive working environment where you can engage with diverse teams and perspectives.
• Constant learning and development opportunities and professional growth programs.
• Active lifestyle and mental well-being, supported through sports classes, master classes, and monthly well-being activities.
• Medical insurance.
• Paid vacation days, sick leaves and national holidays.
• Fully-equipped cosy office space located in the city centre (Gulliver, “Palats Sportu” metro station).

MARKETPLACE & ENGAGEMENT GAMES PRODUCT TEAM

Our team is dedicated to two of Playtech's products - Marketplace, a platform for managing casino content, and Engagement games - a promotional tool for creating and monitoring real-time gaming campaigns. Both products are stable and well-established, with Engagement games offering seamless integration and customization for engaging player campaigns. Marketplace simplifies the management of casino content, providing tools to access marketing assets and manage game certificates. We thrive in a friendly and collaborative environment, engaging in full stack development using JavaScript technologies like React, Redux, ES6+, and Node.js. Some of our responsibilities include maintaining client-facing and server-side applications, writing high-quality, scalable code, participating in the software development lifecycle, collaborating with other departments for ensuring smooth deployments, and refining internal processes.

Tech stack: React, Redux, ES6+, TypeScript, Node.js, MongoDB, Redis, REST APIs.

Playtech is an equal opportunities employer. Our mission is to welcome everyone and create inclusive teams. We celebrate differences and encourage everyone to join us and be themselves at work.

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 building a platform that helps clinics deliver evidence-based preventive care. The platform unifies data from EHRs, labs, wearables, and lifestyle sources into clear clinical summaries and personalized intervention plans, enabling clinicians to spend less time navigating fragmented records and more time improving patient outcomes.

You'll build the platform end-to-end: frontend, backend, infrastructure, and AI agent integrations. You'll work side-by-side with our Applied AI team to bring AI capabilities into the product, owning the systems that make it all work reliably at scale. This is a high-autonomy role: you'll take features from ambiguous idea to production with minimal oversight, gathering requirements and aligning directly with internal stakeholders along the way.

Key Requirements:
🔹8+ years of professional software engineering experience;
🔹Strong full-stack experience with TypeScript, Node.js, and React;
🔹Solid backend architecture and API design skills;
🔹Experience with Postgres (schema design, performance, migrations);
🔹AWS experience (production deployment, security-minded architecture);
🔹Strong problem-solving abilities, you break down complex problems and deliver working solutions fast;
🔹Comfortable integrating with LLM APIs and AI agent patterns;
🔹Uses AI-assisted development tools (e.g. Claude Code, Cursor) as part of your daily workflow;
🔹High autonomy: able to self-direct, unblock yourself, and own outcomes with minimal supervision;
🔹Clear written communicator, comfortable working async in a remote, distributed team;
🔹Thrives in fast-moving startup environments with high ownership and rapid iteration;
🔹English – Upper-Intermediate or higher.

Our Stack:
TypeScript · Node.js · React · Postgres · AWS · Terraform · Python · AI/LLM APIs and Tools;

Bonus points:
🔹Python experience;
🔹Terraform / IaC;
🔹Experience building AI agent workflows or LLM-powered features;
🔹Health/regulated-data environments (security, auditability, clinical UX);
🔹Data unification (normalization, provenance, de-duplication);

What you will do:
🔹Lead full-stack features end to end: gather requirements, align with stakeholders, design, build, and ship to production;
🔹Work directly with the founder, product managers, CTO, and Applied AI team to scope and prioritize;
🔹Design and implement backend services, APIs, and data pipelines;
🔹Develop frontend interfaces that surface complex health data clearly;
🔹Manage cloud infrastructure (AWS) with security and reliability in mind;
🔹Integrate AI capabilities and agent workflows into the product;
🔹Operate independently across the stack, driving work forward without hand-holding;
🔹Ship fast, iterate quickly, and solve ambiguous problems with minimal oversight;

Interview stages:
🔹 HR interview;
🔹 Technical Interview;
🔹Test assignment
🔹 References;
🔹 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.

ORIL is looking for a skilled and proactive Middle+ Full-Stack Engineer with DevOps skills to join our team. This is a hybrid role that combines active participation in core product development with reliable, structured on-call support for a business-critical aviation operations system.

The ideal candidate will spend part of their time driving features and technical improvements on the project, while also ensuring production reliability and incident response during designated evening hours.

What are we looking for?

• 3.5+ years of commercial experience building and maintaining production systems.
• Strong Node.js / NestJS backend development skills.
• Experience with Angular frontend development.
• Good knowledge of PostgreSQL and Redis.
• Practical experience with CI/CD pipelines (Azure Pipelines or similar).
• Understanding of DevOps practices, cloud infrastructure, and troubleshooting.
• Experience in supporting production systems, handling live incidents, and root-cause analysis.
• Ability to debug and solve problems under pressure across code, databases, and integrations.
• Upper-Intermediate English (B2+) for clear communication with international teams.

Nice to have:

• Experience with high-availability or mission-critical systems.
• Familiarity with WebSockets or real-time application development.
• Experience in SRE principles or production support roles.

What will you do?

Product Development:

• Contribute to the core codebase by developing new features and improving existing functionality (Node.js/Angular) to stay closely aligned with the project's architecture.
• Participate in code reviews, technical discussions, and system optimization.
• Collaborate with the engineering team to ensure high code quality and smooth deployment processes.

Production Support & Reliability:

• Provide on-call support for production incidents, including emergency fixes, during scheduled evening hours.
• Investigate and resolve critical issues affecting system stability (frontend, backend, database, infrastructure, and integrations).
• Perform incident triage, root cause analysis, and implement mitigation actions.
• Support deployments and infrastructure troubleshooting.
• Document incidents and solutions to improve overall system reliability.

Engagement Model

• Dual Engagement: Combined model including dedicated hours for core product development and scheduled evening on-call availability.
• On-Call Availability: Weekdays from 7:00 PM to 2:00 AM EET, plus weekend and holiday coverage for critical incidents.
• Compensation: Monthly retainer for availability + hourly compensation for actual development and incident resolution work.
• Duration: Project-based engagement starting with 4 months (with a strong possibility of extension).

If you are looking for a role that balances hands-on feature development with critical system support and high-impact problem-solving, we would love to hear from you!

SBC Performance drives scalable growth for brands ready to expand globally.

Working across eCommerce, health & wellness, education, and entertainment, our team helps brands acquire customers faster and scale across 26+ global markets. We combine data-driven paid media, performance creative, and advanced analytics to turn marketing into a predictable revenue engine.

Trusted by 200+ companies, managing $150M+ in ad spend.

Scale faster. Grow smarter.

Now, we’re looking for a Full Stack Engineer to join our AdTech product team. Someone passionate about building scalable, data-driven systems that power performance marketing automation and analytics.

Key Responsibilities:

• Design, build, and maintain frontend and backend services for the internal AdTech platform.
• Develop Angular (v12+) applications with TypeScript, using reactive patterns (RxJS, Angular Material, reactive forms).
• Implement and optimize state management and change detection for high-performance UI.
• Build and maintain Node.js microservices with TypeScript and RESTful APIs.
• Work with PostgreSQL (TypeORM) and Firestore (NoSQL) for data modeling and storage.
• Implement asynchronous patterns, error handling, and background data processing.
• Integrate with Google Cloud Platform (GCP): Cloud Functions, Firestore, Cloud Storage, and Secret Manager.
• Utilize Redis caching, message queues (RabbitMQ / Pub/Sub), and efficient pagination/filtering for large datasets.
• Collaborate with product, analytics, and QA teams to deliver robust, scalable AdTech solutions.

Requirements:

• 3+ years of experience as a Full Stack Engineer
• Experience with Node.js, Angular (v12+), and TypeScript in production environments
• Strong knowledge of RxJS, Angular Material, and reactive forms
• Experience with state management and change detection optimization
• Experience with microservices architecture and RESTful APIs
• Proficiency with PostgreSQL (TypeORM) and Firestore (NoSQL)
• Understanding of asynchronous patterns and error handling
• Experience deploying and managing Cloud Functions (triggers, logs, monitoring)
• Knowledge of Firestore queries, indexing, and data modeling
• Familiarity with Cloud Storage and Secret Manager
• Docker basics for local development and testing
• Experience with message queues (RabbitMQ or Pub/Sub)
• Redis caching and session management
• Handling large datasets (pagination, filtering, sorting)

Nice to Have

• Experience with ad platform APIs (TikTok Business API, Facebook Graph API, Google Ads API)
• Working knowledge of BigQuery for analytics and data aggregation
• Experience building worker pools and parallel processing pipelines
• Familiarity with CI/CD pipelines and deployment automation
• Understanding of AdTech concepts — campaigns, budgets, pixels, conversions
• Experience with high-volume, real-time data systems

What We Offer

• Hybrid job in Prague/Warsaw or remote
• Competitive compensation
• Flexible working hours: we start our operation day between 9:00 — 11:00 CET
• All necessary equipment
• Paid vacation and sick leaves
• Educational support: reimbursement of certification, training, and a knowledge-sharing atmosphere
• Company events and multiple internal activities
• Open feedback and transparent direct communication

Privacy Notice: https://sbc-performance.com/notice-privacy-for-recruitment/

Про проєкт:
Інноваційний стартап, що працює на перетині AI та real-time комунікацій.
Мета — створити сучасний web-додаток із розумними алгоритмами, швидкою взаємодією та self-hosted інфраструктурою.

Ваші задачі:

• Розробка та підтримка web-додатку на Next.js.
• Інтеграція real-time функцій через WebRTC / LiveKit.
• Робота з Supabase (Postgres), включно з локальним розгортанням.
• Створення інтерфейсів із Tailwind CSS + shadcn/ui.
• Оптимізація архітектури, CI/CD, GitOps, деплой на Vercel.
• Активне використання AI-інструментів (ChatGPT, Gemini, Claude, Cursor) у процесі розробки.
   

Основні вимоги (Must-have):

• Глибокі знання Next.js та екосистеми React.
• Досвід Full-stack розробки на TypeScript / JavaScript.
• Практичний досвід роботи з WebRTC (чат або відео-застосунки).
• Знання одного з ORM — Drizzle (перевага) або Prisma.
• Володіння Git / GitOps.
• Регулярне використання AI-асистентів у розробці.
   

Буде плюсом:

• Інтеграція Stripe або робота з Firebase.
• Знання Docker, GitLab CI/CD, досвід налаштування пайплайнів.
• Розуміння Cloudflare Workers або Edge Computing.
• Базові знання Python

About the Company

Celtara is a fast-growing portfolio of Health & Wellness e-commerce brands operating in the U.S. market.
 

Our brands focus on subscription-based nutritional products designed to support gut health, immunity, metabolic wellness, and overall well-being.
 

As we scale multiple DTC brands, we are looking for a highly technical Shopify specialist who can own not only store operations, but also the ecommerce systems, integrations, tracking infrastructure, subscriptions, analytics, and troubleshooting required to support sustainable growth.

About the Role

We are looking for someone who understands the entire ecommerce ecosystem around Shopify and can confidently work across subscriptions, tracking, analytics, integrations, checkout customization, retention systems, and operational troubleshooting.
 

You will work closely with the Brand CMO, marketing, operations, logistics, and customer support teams to ensure our stores operate efficiently and our data remains accurate and actionable.

Core Responsibilities
 

Shopify Operations

• Manage Shopify store configurations, products, collections, discounts, metafields, and Shopify Markets
• Support Shopify Plus functionality and checkout customization
• Troubleshoot store issues and improve operational workflows
   

Subscription & Retention

• Manage and optimize Recharge subscriptions
• Support failed payment recovery, cancellations, skips, swaps, and retention workflows
• Monitor subscription performance, retention metrics, and customer lifetime value (LTV)
   

Tracking, Analytics & Attribution

• Validate and troubleshoot ecommerce tracking across Shopify, Meta, Google, and attribution platforms
• Investigate data discrepancies and event tracking issues
• Monitor customer acquisition performance, retention metrics, and LTV trends
• Support reporting and KPI analysis
   

Ecommerce Systems & Integrations

• Maintain integrations between Shopify and platforms such as Recharge, Klaviyo, review tools, loyalty systems, and other ecommerce applications
• Configure and troubleshoot automations, workflows, and webhooks
   

CRO & Technical Maintenance

• Support A/B testing initiatives
• Improve checkout performance and customer experience
• Maintain store stability, integrations, and technical infrastructure
   

Documentation & Process Improvement

• Create and maintain SOPs
• Document technical solutions and operational processes
• Improve operational consistency across brands

Required Experience

Shopify

• Shopify Plus
• Shopify Admin
• Metafields
• Shopify Flow
• Liquid
• HTML / CSS / JavaScript
• Shopify APIs (GraphQL / Admin API)

Subscription & Retention

• Recharge (required)
• Experience working with subscription-based businesses
• Understanding of retention metrics and LTV

Tracking & Analytics

Experience with several of the following:

• Elevar
• Triple Whale
• Hyros
• GA4
• GTM
• Microsoft Clarity
• Hotjar

Server-Side Tracking

Experience with:

• Meta CAPI
• Server-side tracking
• Event validation
• Event deduplication

Ecommerce Systems

Experience with several of the following:

• Klaviyo
• Zendesk
• PostPilot
• Octane AI
• Judge.me
• Yotpo
• Rivo
• Loyalty platforms

Technical Troubleshooting

Ability to independently diagnose and resolve:

• Tracking issues
• Subscription issues
• Checkout issues
• Integration failures
• Data discrepancies

Nice to Have

• BigQuery, SQL, or Google Cloud experience
• Marketplace integrations
• Chargeflow or NoFraud
• Affiliate platforms (GOAFFPRO, Levanta)
• Health & Wellness ecommerce experience

What We Offer
-Competitive salary
-Fully remote & flexible schedule
-Fast-growing e-commerce environment
-Learning & career growth
-Work with experienced team & experts