Jobs Fullstack

We are building a digital orthodontics platform with interactive browser-based 3D tools.

This role is primarily focused on frontend and 3D development with TypeScript, Angular, Three.js, and WebGL, with Node.js full-stack development as a secondary responsibility. You will build interactive tools for viewing, editing, and working with complex 3D models directly in the browser.

     You Are

• A software engineer with demonstrable experience building interactive web applications through commercial work, substantial personal projects, open-source contributions, or similar production-quality work.
• Strong in modern JavaScript and TypeScript.
• Able to work productively with Angular, including components, services, dependency injection, forms, routing, and application state.
• Experienced with RxJS or comparable reactive and asynchronous state-management patterns.
• Experienced with Three.js or a comparable WebGL-based engine, and ready to work directly with Three.js.
• Comfortable working with scenes, cameras, renderers, lights, meshes, materials, and render loops.
• Experienced with BufferGeometry, vertex attributes, index buffers, normals, typed arrays, and binary mesh data.
• Comfortable with 3D mathematics, including vectors, transformation matrices, local and world coordinate systems, rotations, and quaternions.
• Able to implement interactive 3D behavior such as raycasting, object picking, dragging, surface-constrained movement, camera controls, and object transformations.
• Familiar with triangle meshes, bounding boxes, spatial acceleration structures, collision or proximity checks, and common mesh edge cases.
• Able to work with 3D formats such as STL and understand model loading, coordinate systems, units, normals, and transformations.
• Able to profile and optimize browser rendering, CPU usage, GPU resources, and memory when working with large meshes.
• Familiar with Web Workers, ArrayBuffer, transferable objects, or other approaches for keeping expensive work off the main UI thread.
• Comfortable building and consuming REST APIs.
• Experienced with Node.js and Express, or a comparable backend stack.
• Familiar with file uploads, asynchronous jobs, persistent workflow state, authentication, validation, and error handling.
• Able to write unit, API/integration, and end-to-end tests.
• Familiar with Git workflows, pull requests, code review, and collaborative development.
• Comfortable taking ownership of AI-generated code by reviewing, testing, debugging, and validating it before delivery.

Angular experience is strongly preferred. Candidates with strong React or Vue experience may also be considered if they have substantial browser-3D expertise and can become productive in Angular quickly.

     
     Will Be a Plus

• Experience with three-mesh-bvh or similar BVH/AABB acceleration structures.
• Experience implementing mesh collision detection, proximity checks, or closest-point queries.
• Experience with mesh editing, contour manipulation, cutting planes, or CAD/3D-viewer tooling.
• Familiarity with GLSL, custom shaders, render targets, or GPU-based calculations.
• Experience with WebGL performance profiling and GPU resource lifecycle management.
• Familiarity with glTF/GLB, Draco compression, or other compressed 3D formats.
• Experience with voxel grids, octrees, signed distance fields, or spatial indexing.
• Experience integrating JavaScript applications with C++, WebAssembly, or native geometry-processing services.
• Experience implementing editor-style features such as command history, undo/redo, scene serialization, and reusable transformation tools.
• Experience with SQLite, PostgreSQL, DynamoDB, or repository-based persistence.
• Experience with AWS services such as S3, SQS, DynamoDB, or presigned upload workflows.
• Experience with Docker and containerized local development.
• Experience with Karma/Jasmine, Node’s test runner, and Playwright.
• Experience working with large binary files and object storage.
• Experience in medtech, healthcare, orthodontics, CAD, manufacturing, scientific visualization, or 3D printing.
• Familiarity with AI-assisted development tools such as Cursor, Claude Code, or Codex.

Advanced C++ or machine-learning expertise is not required. You will collaborate with engineers responsible for native geometry processing and ML services, but you should be able to understand their inputs, outputs, coordinate systems, and integration requirements.
 

     What We Expect from You

• Use modern AI development tools to work faster while remaining responsible for the correctness and maintainability of the resulting code.
• Make pragmatic engineering decisions that help us deliver quickly without creating unnecessary complexity.
• Investigate unfamiliar parts of the system independently and communicate important assumptions or risks.
• Proactively identify rendering, performance, memory, state-management, and UX problems and propose practical solutions.
• Validate 3D behavior using representative models and edge cases rather than relying only on visual inspection.
• Be comfortable working in an evolving product with changing priorities and early-stage ambiguity.
• Collaborate effectively with frontend, backend, C++, ML, and product team members.
• Take ownership of a feature across the frontend, 3D scene, API, persistence, and processing workflow when needed.
  
  Responsibilities
• Build and improve Three.js-based clinical 3D viewers and interactive planning tools.
• Implement scan inspection, preparation, and manual cleanup workflows.
• Build tools for mesh selection, surface interaction, landmark editing, transformations, segmentation review, and 2D/3D overlays.
• Maintain consistent transformations and coordinate systems across viewers, workflow steps, saved state, and backend processing.
• Optimize rendering and interaction for large clinical scan meshes.
• Move expensive geometry operations off the main browser thread when necessary.
• Manage mesh loading, caching, resource reuse, and correct disposal of WebGL resources.
• Implement Angular components and focused services following the project’s existing architecture.
• Maintain reliable synchronization between Three.js scene state, Angular state, and backend workflow state.
• Contribute to Express routes, services, repositories, validation, authentication, and storage integrations when a feature requires full-stack changes.
• Integrate the web application with asynchronous C++ geometry-processing and Python ML services.
• Write and maintain frontend unit tests, backend API tests, and Playwright end-to-end tests.
• Participate in technical design discussions and code reviews.
• Use AI-assisted development tools responsibly and help improve the team’s engineering workflows.
   

     What We Offer

• The opportunity to work on an innovative product in the medical-technology and browser-3D space.
• High ownership and direct impact on product UX and technical decisions.
• Close collaboration with specialists in frontend engineering, computational geometry, C++, and machine learning.
• Flexible working hours within the European time zone.
• A fast-moving environment where strong engineers can influence both product direction and system architecture.
• Company-paid access to premium AI developer tools, with a budget of $200+ per month depending on role and needs.
• Professional development support, including relevant courses and certifications.
• 20 paid business days of vacation.
• 5 paid sick-leave days.
• Paid national holidays.

ZentixSoft is looking for a Senior Full-Stack Engineer! 🚀

Format: Full-Time Outstaffing, long-term remote project. You will focus on building robust, high-performance, data-heavy product interfaces and enterprise backend workflows.

Working week  Sunday-Thursday
 

💡 Why ZentixSoft? 
💸 Salary Review: A structured system of compensation reviews aligned with your engineering growth. 
⚖️ Work-Life Balance: Sustainable workflows with no senseless overtime, helping you keep your resource fully charged. 
🦾 Trust and Transparency: Zero micromanagement and no invasive time-trackers—we fully trust your professional autonomy. 
🎁 Gifts & Culture: Corporate gifts for holidays, birthdays, and a true team atmosphere where your voice always matters.
 

🧩 Responsibilities:

• Full-Stack Architecture: Design, build, and maintain scalable full-stack applications using TypeScript across the entire delivery lifecycle.
• Data-Heavy UI Engineering: Develop high-performance, responsive UI components and complex data-heavy interfaces using Angular.
• Backend Services: Architect and deploy resilient microservices and RESTful/GraphQL APIs using NestJS.
• Quality & Testing: Write clean, maintainable code with unit and integration tests (End-to-End automated testing using Cypress).
• Collaboration: Partner with product managers, UX designers, and backend team members to drive feature delivery from concept to production.
   

🎓 Requirements:

• Commercial Experience: 5+ years of professional full-stack software development experience.
• Frontend Mastery: Strong proficiency in TypeScript and modern Angular frameworks for building complex, data-intensive web applications.
• Backend Proficiency: Hands-on expertise with NestJS (Node.js ecosystem) for backend service architecture.
• Data & Performance: Demonstrated experience in optimizing UI performance for large datasets, state management, and real-time data handling.
• Testing: Experience with testing frameworks (Unit/Integration) and E2E testing tools.
• Communication: Upper-Intermediate/Advanced English for daily technical discussions.
   

➕ Nice to Have:

• Experience with Cypress for end-to-end testing pipelines.
• Knowledge of RxJS, NgRx, or modern Angular signals.
• Familiarity with CI/CD automation and containerized environments (Docker, Kubernetes).
   

📍 Project Details:

⏳ Duration: Long-term (Full-time).

📍 Location: Fully Remote.

Our Customer:

A global product company in the cybersecurity domain, focused on helping organizations identify and reduce risks across modern IT environments.

Your Tasks:

• Develop and maintain production features across the full stack, from the React UI through the API to the database.
• Design, maintain and troubleshoot Node.js and TypeScript backend services and production APIs.
• Maintain and enhance the React front end, including modern React patterns, data flow and UI performance.
• Own the data access layer in Node.js/TypeScript, keeping control over generated SQL and performance-critical behavior.
• Design and evolve database schemas, relationships, constraints and data integrity rules.
• Diagnose and optimize slow queries and production bottlenecks using execution plans and index analysis.
• Plan and execute production database migrations with backward compatibility and minimal downtime.
• Trace and resolve production incidents across the UI, API, data access layer and database.
• Interface directly with the international client and engineering team in live technical discussions.
• Deliver high-quality, resilient software updates with limited supervision.

Required Experience and Skills:

• 8+ years of professional software engineering experience, including recent hands-on full-stack work in production systems.
• Strong hands-on experience with Node.js and Node.js frameworks such as NestJS or Hapi.js.
• Expert-level knowledge of TypeScript in both backend services and data access layers.
• Strong production experience with React, including modern React patterns and state and data flow.
• Hands-on experience with state management libraries (MobX or Redux).
• Strong practical SQL skills, preferably with PostgreSQL.
• Hands-on experience with complex JOINs, aggregations and filtering on large datasets.
• Proven ability to diagnose slow queries using EXPLAIN and ANALYZE, execution plans and index effectiveness validation.
• Experience designing and maintaining data access layers with query builders or ORM tools.
• Practical experience with schema design, normalization and denormalization decisions, constraints and data integrity.
• Hands-on experience with multi-step transactional operations, rollback behavior, race conditions and transaction isolation trade-offs.
• Experience with production database migrations, schema versioning, backward-compatible changes and zero-downtime deployment approaches.
• Strong REST API experience, including over-fetching, N+1 problems, latency and efficient mapping of database data into API responses.
• Demonstrated ability to trace production issues across the UI, API, data access layer and database.
• Experience in production environments with large record volumes and high load.
• Experience working in an Agile environment, maintaining code quality through peer reviews and testing.
• Proven ability to work autonomously, clarify requirements and drive tasks to completion without continuous follow-up.
• Proven ability to take ownership of outcomes across the full stack rather than a single component.
• Proven ability to raise risks, blockers and missing information early and provide clear status updates.
• Ability to enter an existing codebase and domain, absorb context quickly and adapt to established engineering practices.
• Ability to receive direct feedback, discuss disagreements professionally and adjust quickly.
• English – Upper-Intermediate

Would Be a Plus:

• Hands-on experience with GraphQL schemas, resolvers and integration
• Experience with Next.js and server-side rendering
• Experience with stored procedures and database-side performance-critical logic
• Experience with Redis and caching strategies that reduce unnecessary database load
• Experience with AWS and cloud-based production environments
• Exposure to Docker, Kubernetes and CI/CD pipelines
• Background in cybersecurity or identity management
• Experience with large-scale identity data (Active Directory or Entra ID)
• Experience with data-intensive, analytics or enterprise high-load products

Our Customer:

Our customer develops specialized software products for professional business workflows. The engineering team works on established production applications and is looking for a full-stack engineer who can contribute across both frontend and backend development.

Your Tasks:

• Develop and maintain full-stack applications across React/TypeScript frontend and C# backend.
• Work on medium and large-scale production applications throughout the development lifecycle.
• Develop and maintain frontend functionality using React, including both Hooks and class-based components.
• Build and maintain backend functionality using ASP.NET MVC and Web API on the classic .NET Framework.
• Investigate, debug, trace, and resolve complex frontend and server-side issues.
• Apply software engineering principles, design patterns, and clean development practices.
• Quickly learn and adopt new technologies when required.
• Work independently while contributing across the full technology stack.

Required Experience and Skills:

• 3+ years of experience working with medium or large-scale React applications.
• 2+ years of experience working with medium or large ASP.NET MVC or Web API applications.
• Strong knowledge of React Hooks and classic class-based components.
• Strong TypeScript skills.
• Good understanding of core web technologies, including JavaScript, XHTML, and CSS.
• Production experience with Redux, Redux Saga, and Immutable.js.
• Strong frontend debugging and problem analysis skills.
• Hands-on experience with the classic .NET Framework; working experience with .NET Core is not required, but solid knowledge of .NET Core is required.
• Strong knowledge of C#, OOP, SOLID principles, design patterns, reflection, and algorithms.
• Strong understanding of XML and JSON serialization.
• Ability to debug, trace, and resolve complex server-side issues.
• Strong ability to learn new technologies quickly and work independently.
• University degree in Computer Science or a related field, or equivalent industry experience.
• Excellent English.

Would Be a Plus:

• Experience with AWS services such as SQS, EKS, and Fargate.
• Experience with cloud-oriented systems.
• Experience with Kubernetes.
• Experience with Node.js.
• Knowledge of nw.js or similar technologies.

We're hiring a Junior Full Stack Developer (React + Node.js) to join our team and work on a booking platform for activities — yachts, diving, and tours. You'll contribute to both the frontend and backend of the product, building features that help users discover and book experiences online, while collaborating closely with developers to deliver high-quality solutions on time. 

Requirements: 

• Knowledge of JavaScript, React, Node.js (Nest), TypeScript, HTML5, CSS3 
• Experience with relational and no-sql databases    
• Knowledge of Rest API 
• Experience in Agile environment (Scrum or Kanban). 
• Self-motivated, dedicated, and willing to go the extra mile; 
• English: working proficiency (async team communication) 

Responsibilities: 

• Enhance and develop existing application 
• Improve visual representation of existing web application 
• Communicate with developers, designers and product owners 
• Ensure timely delivery of solutions according to specification and design

Recruitment Process: 

• HR Interview 
• Tech & Final Interviews 
• Job Offer 

We Offer: 

• Innovation Culture: Work in a team that actively experiments with AI and modern development approaches    
• Flexible Work: Remote work or a modern office in Kyiv   
• Generous Time Off: 20 paid vacation days + 15 sick leave days annually   
• Professional Growth: Compensation for courses, certifications, and learning resources   
• Cutting-Edge Tools: Access to premium AI tools (Cursor Pro, Сlaude Code, GitHub Copilot, etc.)

Panenco is a boutique software studio in Belgium and Ukraine. We build next-gen B2B SaaS products and enterprise AI solutions, always with an entrepreneurial spirit. We're a small team of the best and brightest, looking for 10x people who love to tackle challenging problems. We give you significant ownership and room to grow, expecting you to take charge and continuously evolve with the latest and greatest in our industry.
 

About the position

We’re looking for software engineers with strong computer science fundamentals and an entrepreneurial edge to build robust products end-to-end on our Node.js and React stack. You’ll work across the full stack – from database schema to UI – joining a dedicated product team alongside some of the best and brightest people in our industry. The balance between front-end and back-end work flexes depending on the project, and we expect you to be comfortable owning features from idea to production.
 

Technologies and required skills

We expect engineers in our team to take on a broad set of responsibilities, always acting in the interest of the product rather than sticking to the boundaries of any specific domain. You have an in-depth grasp of the majority of the following technologies:

• Core Language & Runtime
  • TypeScript: strong typing, generics, modern ES standards
  • Node.js: event loop, async patterns, streams, modules, runtime fundamentals
  • Strong computer science fundamentals: data structures, algorithms, system design
• Back-End
  • NestJS: modular architecture, dependency injection, decorators, guards, interceptors, pipes
  • REST API design: resource modeling, versioning, error handling, idempotency
  • Authentication & authorization: JWT, OAuth/OIDC, session management, RBAC patterns
• Database & Data Layer
  • PostgreSQL: schema design, indexing, query optimization, transactions
  • ORMs: hands-on experience with Drizzle ORM and/or Prisma
  • Data modelling: turning business logic into comprehensible data structures
  • Migrations, schema evolution, data integrity
• Front-End
  • React: function components, hooks, composition patterns, controlled vs derived state, React Server Components (RSC)
  • Typescript: strong typing, generics, modern ES standards
  • Next.js: App Router, Server Components, Server Actions, routing concepts, SSR/SSG patterns
• UI & Styling
  • Design systems and component libraries: shadcn/ui (primary), Radix UI, MUI, Ant, Atlassian UI
  • Styling: modern CSS with Tailwind CSS, CSS Modules, SCSS
  • Responsive layouts and cross-browser compatibility
• Forms & Validation
  • React Hook Form: form state management and validation
  • Zod: schema validation and type inference
• Testing & Quality
  • E2E testing: Playwright or Cypress
  • Understanding of test pyramid: unit, integration, and E2E testing strategies
  • CI integration: test automation in continuous integration pipelines
  • Code quality: focus on readability, maintainability, and reusability
• Build Tools & Module Bundlers
  • Vite (widely used across our projects)
  • Webpack
  • Next.js build system: experience with Next.js build and development tooling
  • Module bundling concepts: understanding of modern bundling approaches
• Error Tracking & Observability
  • Sentry or similar tools for frontend error tracking and monitoring
  • Ability to interpret production errors and improve system reliability
• Security Fundamentals
  • Frontend security: XSS, CSRF, secure handling of authentication tokens
  • Backend security: input validation, SQL injection prevention, secrets handling, rate limiting
  • OWASP Top 10
  • Permissions and authorization patterns
• Web & Browser Fundamentals
  • HTTP/HTTPS, caching, cookies, CORS
  • Event Loop, microtasks vs macrotasks, Web APIs
  • Performance: client-side and server-side performance considerations
  • Accessibility: WCAG awareness, keyboard navigation, screen readers, semantic HTML
• AI-Assisted Development
  • Hands-on experience using AI coding assistants (Claude Code, Cursor, Codex, or similar) in daily development workflow
  • Ability to write effective prompts, review AI-generated code critically, and integrate AI tools into your engineering process without compromising code quality
  • Judgment about when AI output needs verification — recognizing hallucinations, context limits, and over-reliance risks
• Language skills: solid reading and speaking skills in English
   

As a plus

• tRPC: end-to-end type-safe APIs, procedures, routers, middleware
• Turbopack: familiarity with Next.js Turbopack for faster development builds
• Virtualisation: hands-on experience with Docker and similar services
• Cloud: practical experience with GCP, AWS or Azure (serverless principles a bonus)
• CI/CD pipelines: setting up and managing deployment pipelines
• Message queues / background jobs: BullMQ, Redis, or similar
• Information security: an understanding of security standards (SOC 2, ISO 27001)
• React Native: experience with React Native for mobile development
• Basic understanding of working with LLM APIs (OpenAI, Anthropic): request/response patterns, streaming, token usage, cost awareness
• Model Context Protocol (MCP): practical experience configuring MCP servers in tools like Claude Desktop, Claude Code, or Cursor (e.g. filesystem, GitHub, Slack, or custom servers)
• Building AI-powered product features: experience integrating LLMs into user-facing products (chat interfaces, RAG pipelines, agentic workflows, streaming UIs)
• Prompt engineering: structured approaches to system prompts, few-shot examples, tool use / function calling, evals 
   

Locations

Remote work is our default.
We also have an office in Kyiv, and team members are expected to be available to work onsite there when needed.
 

We offer 
We offer a friendly, dynamic and inspirational working environment with a strong team that celebrates great engineering. During our bi-weekly software engineering labs sessions we share experiences from the various products that we're building. A fair compensation, office snacks and fun afterwork drinks are included of course!

The interview process

The interview process is short (but thorough) and will consist of 3 steps:

1. Technical interview: you present a personal project or one of your prior involvements from end to end, with our team asking targeted questions
2. Pair-Programming Session: you collaborate with one of our engineers on a practical task. We focus on problem-solving approach, communication, code structure, and how you reason about changes in real time.
3. Feedback: you will receive feedback about the technical conversation either in written form or through a call

Our Customer:

A global product company in the cybersecurity domain, focused on helping organizations identify and reduce risks across modern IT environments.

Your Tasks:

• Develop and maintain production features across the full stack, from the React UI through the API to the database.
• Design, maintain and troubleshoot Node.js and TypeScript backend services and production APIs.
• Maintain and enhance the React front end, including modern React patterns, data flow and UI performance.
• Own the data access layer in Node.js/TypeScript, keeping control over generated SQL and performance-critical behavior.
• Design and evolve database schemas, relationships, constraints and data integrity rules.
• Diagnose and optimize slow queries and production bottlenecks using execution plans and index analysis.
• Plan and execute production database migrations with backward compatibility and minimal downtime.
• Trace and resolve production incidents across the UI, API, data access layer and database.
• Interface directly with the international client and engineering team in live technical discussions.
• Deliver high-quality, resilient software updates with limited supervision.

Required Experience and Skills:

• 8+ years of professional software engineering experience, including recent hands-on full-stack work in production systems.
• Strong hands-on experience with Node.js and Node.js frameworks such as NestJS or Hapi.js.
• Expert-level knowledge of TypeScript in both backend services and data access layers.
• Strong production experience with React, including modern React patterns and state and data flow.
• Hands-on experience with state management libraries (MobX or Redux).
• Strong practical SQL skills, preferably with PostgreSQL.
• Hands-on experience with complex JOINs, aggregations and filtering on large datasets.
• Proven ability to diagnose slow queries using EXPLAIN and ANALYZE, execution plans and index effectiveness validation.
• Experience designing and maintaining data access layers with query builders or ORM tools.
• Practical experience with schema design, normalization and denormalization decisions, constraints and data integrity.
• Hands-on experience with multi-step transactional operations, rollback behavior, race conditions and transaction isolation trade-offs.
• Experience with production database migrations, schema versioning, backward-compatible changes and zero-downtime deployment approaches.
• Strong REST API experience, including over-fetching, N+1 problems, latency and efficient mapping of database data into API responses.
• Demonstrated ability to trace production issues across the UI, API, data access layer and database.
• Experience in production environments with large record volumes and high load.
• Experience working in an Agile environment, maintaining code quality through peer reviews and testing.
• Proven ability to work autonomously, clarify requirements and drive tasks to completion without continuous follow-up.
• Proven ability to take ownership of outcomes across the full stack rather than a single component.
• Proven ability to raise risks, blockers and missing information early and provide clear status updates.
• Ability to enter an existing codebase and domain, absorb context quickly and adapt to established engineering practices.
• Ability to receive direct feedback, discuss disagreements professionally and adjust quickly.
• English – Upper-Intermediate

Would Be a Plus:

• Hands-on experience with GraphQL schemas, resolvers and integration
• Experience with Next.js and server-side rendering
• Experience with stored procedures and database-side performance-critical logic
• Experience with Redis and caching strategies that reduce unnecessary database load
• Experience with AWS and cloud-based production environments
• Exposure to Docker, Kubernetes and CI/CD pipelines
• Background in cybersecurity or identity management
• Experience with large-scale identity data (Active Directory or Entra ID)
• Experience with data-intensive, analytics or enterprise high-load products

Working conditions

5-day working week, 8-hour working day;

Remote work.

We're looking for a Full-Stack Developer (Node.js/React/Next.js), Senior level  to join a product for a fintech client: a time-tracking and project management platform built from scratch. 

Responsibilities: 

• Build  fintech product from scratch together with the team 
• Develop full-stack features across a Node.js/TypeScript backend and a React/Next.js frontend 
• Drive technical decisions and take ownership of delivery, not just pick up tickets 
• Collaborate directly with the client on product direction and priorities 
• Use AI tools as a core part of your daily development workflow 

Requirements: 

• 5+ years of commercial experience in full-stack development 
• Strong experience with Node.js, TypeScript, React, and Next.js 
• Proven experience launching greenfield projects from scratch 
• Strong ownership mindset and lead capabilities 
• AI-first way of working: hands-on daily use of Claude Code, Cursor, or similar tools 
• Ability to hit the ground running and deliver from day one 
• Very good English communication skills 

Nice to Have: 

• Experience in fintech or SaaS products 
• Background in time-tracking, project management, or productivity tools 

We Offer: 

• Greenfield Product: Build a product from the ground up and define its architecture 
• Real Product Impact: Direct collaboration with the client and influence on product decisions 
• Innovation Culture: Work in a team that actively experiments with AI and modern development approaches 
• Flexible Work: Remote work or a modern office in Kyiv 
• Generous Time Off: 20 paid vacation days + 15 sick leave days annually 
• Professional Growth: Compensation for courses, certifications, and learning resources 
• Cutting-Edge Tools: Access to premium AI tools (Cursor Pro, Claude Code, GitHub Copilot, etc.) 

Recruitment Process: 

1. HR Interview 
2. Technical Interview 
3. Final Interview 
4. Job Offer 

🚀 About Kilona.io
 

Kilona.io builds high-quality, high-speed digital products for international clients. We work in a small, fast-moving team where developers have real ownership over their work and can directly influence the final product.

We’re looking for a Middle Shopify Developer to join our team and work on e-commerce projects, building and improving Shopify stores, implementing custom functionality, and integrating third-party services.
 

✅ Requirements

- 2+ years of commercial experience with Shopify development
- Strong knowledge of Shopify Liquid
- Solid experience with JavaScript, HTML5, and CSS3
- Experience building and customizing Shopify themes
- Good understanding of Shopify Online Store 2.0
- Experience working with Shopify APIs, including Admin API and Storefront API
- Experience integrating and configuring third-party Shopify apps and services
- Understanding of responsive development and cross-browser compatibility
- Experience with Git
- Ability to debug and troubleshoot Shopify-related issues independently
- Understanding of e-commerce UX and development best practices
- English — Intermediate or higher

✨ Nice to Have
- Knowledge of GraphQL
- Experience with performance optimization and Core Web Vitals
- Experience with CRO or A/B testing for e-commerce projects

🧑‍💻 Responsibilities

- Develop, customize, and maintain Shopify stores and themes
- Build reusable sections, components, and custom functionality using Liquid, JavaScript, HTML, and CSS
- Implement new storefront features based on design and business requirements
- Customize and extend existing Shopify themes
- Integrate third-party applications, services, payment solutions, and external APIs
- Work with Shopify Admin API, Storefront API, GraphQL, and webhooks when required
- Configure and work with metafields, metaobjects, product data, collections, and Shopify settings
- Optimize storefront speed, performance, responsiveness, and Core Web Vitals
- Identify and resolve technical issues across Shopify stores
- Support existing projects, investigate bugs, and implement improvements
- Participate in code reviews and maintain clean, structured, reusable code
- Collaborate with designers, QA, project managers, and other developers
- Estimate development tasks and communicate technical limitations or possible solutions
- Stay up to date with Shopify platform updates and development best practices

 
🧑‍💻 Working Conditions

- Full-time/part-time cooperation
- Fully remote
- Flexible working hours
- Long-term cooperation
- International projects
- Small and fast-moving team
- Opportunity to work independently and influence technical decisions

 
🔍 Hiring Process

1. Video interview
2. Technical interview
3. Final interview/offer

About the role

We're changing how products get built. Our designers now create interfaces directly in code with Claude Design and Claude Code, so design and frontend arrive together. We need a senior engineer who takes it from there: sets the project up properly, builds the backend, secures it, and ships it to production.

This is a full-stack role with no bias toward frontend or backend. You'll work on fixed-price MVPs delivered turnkey and deploy-ready, on growth retainers after launch, and on modernizing existing client products to the new AI-native approach.

Our projects span FinTech, Web3, marketplaces, SaaS platforms, and data-heavy admin systems. Experience in these domains is a plus, not a core requirement.

You'll be the technical owner across our projects: choosing the stack, setting standards, reviewing code, and helping designers solve technical problems. The role has a clear growth path toward Team Lead.

What you'll do

• Set up projects correctly from day one: repository structure, design system and typography integration, environments, CI/CD
• Take designer-built interfaces to production: refine the code, connect data, make it stable and maintainable
• Build MVP backends on Supabase: database schema, authentication, roles and permissions, row-level security, storage, edge functions
• Own security: make sure users never see each other's data, review access rules, catch unsafe patterns in AI-generated code
• Integrate payments and third-party services; deploy and maintain production environments
• Choose and justify the stack for each project and explain the choice to the client
• Work with existing client codebases during redesign and modernization projects
• Set up AI-driven testing: autotest logic, coverage of key flows, a QA process designers and external QA can follow
• Review code, define engineering standards, and support designers working in code
• Estimate projects accurately and take part in scoping and presales
• Coordinate with partner backend teams on heavy, complex products

What we're looking for

• 4+ years of commercial development across both frontend and backend
• Strong React and TypeScript (Next.js is a plus, not required)
• Solid backend experience: Node.js or another server language, relational databases (PostgreSQL), API design
• Hands-on Supabase or Firebase experience: auth, row-level security, access control
• Experience deploying and running products in production (Vercel, cloud providers, CI/CD)
• Payment integrations or work with financial data
• A portfolio of small to medium products you built end to end, with the ability to explain why each technology was chosen
• Experience with more than one stack, so you can pick the right tool rather than default to one
• Security mindset: authorization, data isolation, secrets management
• Testing culture: unit and E2E (Jest, Playwright / Cypress), including tests written by AI
• Experience working with existing codebases, refactoring, and migrations

AI-native development is the core of the role

• We build with AI every day, so we need real hands-on experience, not familiarity.
• Daily work with Claude Code, Cursor, Codex, or similar agentic tools
• Preparing context for agents: CLAUDE.md / cursor rules, MCP integrations, task decomposition
• Critical review of AI-generated code: hallucinations, unsafe patterns, unnecessary abstractions
• Understanding where AI saves time and where it creates technical debt
• Ability to build an AI-driven workflow for the team, including designers who code
• Ability to explain to a client how AI-native development affects timelines and cost

In the interview we'll ask you to walk us through a real case: a product you built with an agent, how you set up the process, and what went wrong.

Communication

• English B2+, confident in a one-hour client call without an interpreter
• Comfortable talking to CTOs, founders, and C-level: structured, focused on business impact
• Able to explain technical risks, trade-offs, and stack choices in business terms
• Able to say "no" to a poor idea or unrealistic scope respectfully and on time

• Clear written updates and documentation

   

Growth to Team Lead

As you grow into the Lead role, you'll join client calls with CTOs, founders, and C-level stakeholders. We need someone who can explain a technical decision through its business impact, give a reasoned "no" to a poor idea, and keep the relationship intact. If you're a strong engineer but client communication feels like a burden, this role isn't for you, and that's fine.

Your responsibilities will gradually include:

• Direct client communication and calls with CTOs and founders
• Presenting and defending architecture, stack choices, scope, and estimates
• Translating business requirements into technical solutions and explaining risks in business language
• Mentoring and onboarding developers and designers who work in code
• Establishing engineering standards and code review guidelines
• Technical coordination between our team, partner teams, and the client's engineers
• Technical interviews and candidate evaluation

• Project estimation and presale support

   

Nice to have

• Product thinking: you care about what the MVP is for, not only how it's built
• Experience with Lovable, v0, Figma Make, or similar AI builders, and knowing their limits
• Python, Go, or PHP backend experience
• Analytics and A/B testing setup for live products
• Web3: WalletConnect, ethers.js / viem
• Previous Tech Lead experience
• Presale and project estimation experience

PwC is a global network of more than 370,000 professionals in 149 countries that turns challenges into opportunities. We create innovative solutions in audit, consulting, tax and technology, combining knowledge from all over the world.

PwC SDC Lviv, opened in 2018, is part of this global space. It is a place where technology is combined with team spirit, and ambitious ideas find their embodiment in real projects for Central and Eastern Europe.

What do we guarantee?

• Work format: Remote or in a comfortable office in Lviv - you choose.
• Development: Personal development plan, mentoring, English and Polish language courses.
• Stability: Official employment from day one, annual review of salary and career prospects.
• Corporate culture: Events that unite the team and a space where everyone can be themselves.

 
PwC is looking for a skilled Full-Stack Developer proficient in Python and JavaScript to build and maintain web-based solutions. You’ll work across the stack to support digital initiatives, from UI development to backend services and database design.

Key Responsibilities:

• Develop responsive, accessible UIs using HTML5, CSS3, and React or Angular;
• Build and maintain APIs and backend services with FastAPI, Django, or Flask;
• Design and manage databases (PostgreSQL, MongoDB);
• Ensure performance, security, and scalability across the stack;
• Collaborate with cross-functional teams to deliver high-quality solutions;
• Participate in code reviews and CI/CD workflows;
• Stay current with modern frameworks and best practices.

Required Skills:

• Strong experience with Python and JavaScript frameworks;
• Solid front-end skills (HTML5, CSS3, modern JS);
• Proficiency in RESTful API design and database management;
• Familiarity with Git, CI/CD, and secure coding practices;
• Strong problem-solving and communication skills.

 
Preferred:

• Experience in agile environments;
• Knowledge of Azure or AWS;
• Familiarity with Docker, Kubernetes, or GitOps;
• Exposure to AI or data-driven systems.

Policy statements:
https://www.pwc.com/ua/uk/about/privacy.html

About Bixter

Bixter is a recruitment and mobility company connecting overseas trainees with European employers in agriculture, food, and hospitality. We manage the full cycle from education, mobility, visa processing, and employer placemen and have run this successfully for 20 years. We're now building our first internal engineering team to create a unified digital ecosystem.

You'll be our founding technical hire, building the foundation our entire ecosystem runs on, from scratch. You'll architect and build our core infrastructure and central API layer, and ship the first version of the customer-facing web portals.

What you'll build and own

• Design and build our core API service
• Set up infrastructure from scratch, including cloud environment, CI/CD pipelines, Docker/Kubernetes, and security and GDPR-compliant data handling
• Build the first working version of our web portals
• Architect how AI capabilities get embedded into the core system so they're usable across the whole ecosystem
• Make key early technical decisions, stack, architecture, tooling,  that shape how the team scales

What we're looking for

• Proven experience building a product from scratch
• Strong backend skills: Python or Node.js, PostgreSQL, REST/GraphQL API design
• Working frontend ability: React/Next.js or Vue/Nuxt, TypeScript you can ship a clean, working UI end-to-end
• Real DevOps experience: cloud platforms (AWS/GCP), Docker, CI/CD
• Comfort integrating AI/LLM APIs (OpenAI, Anthropic, LangChain, or similar) into production systems
• Comfortable with ambiguity, making calls without a big team around you, and building fast without cutting corners on foundations

Experience working with Odoo is a plus. 
 

What we offer

• Full ownership of the foundation of Bixter's platforms
• The flexibility to be creative and leave your footprint on the future of the Bixter ecosystem
• An engaged design team building the ecosystem alongside you
• An international, creative product team

We are looking for a Lead Fullstack Developer(Node.js, React) with a passion for creative game design and systems engineering. You won’t just be pulling tickets from a backlog: you’ll be the technical authority for our products. You will lead two completely different engineering ecosystems: the highly optimized, memory-sensitive world of game clients and the backend infrastructure. You will bridge the gap between creative vision and technical reality, ensuring that the incredible experience enjoyed by players is powered by a robust, secure and scalable backend.

What You Will Do:

• E2E Game Architecture: Design, implement, and maintain complete game features. You will seamlessly integrate scalable server-side backend services with high-performance client-side gameplay and UI logic
• Decoupled Systems: Design a flexible, modular backend that efficiently serves data to various frontend game clients, ensuring seamless integration regardless of the client engine used
• Full-Stack Optimization: Balance performance across the entire product. Optimize server-side load management and database queries while simultaneously managing client-side memory and frame rate stability across a wide range of devices
• Unified Observability: Implement robust real-time data collection, logging, and crash reporting, to track the user journey from client-side actions to back-end server responses
• System Health & Proactive QA: Monitor the entire stack to swiftly detect, diagnose, and resolve cross-domain issues – whether they originate as client-side crashes or backend server bottlenecks
• Security & Risk Mitigation: Implement E2E security protocols for secure client-server communication. Protect sensitive user data on the server while deploying client-side risk mitigation, such as anti-cheat mechanisms and exploit prevention
• Act as the Technical Translator: Serve as the core bridge connecting UI/UX designers, Game Designers, and engineering leadership. You will help translate creative requirements into actionable code while ensuring the backend can support those designs
• Elevate the Team: Mentor developers in modern client-side and backend techniques, fostering a culture of high-quality code and technical ownership
• Set the Standard for Documentation: Create and maintain a unified knowledge base covering both sides of the stack – from API specs and server infrastructure to engine integration manuals
• Drive Agile alignment: Holistically scope features during sprints, ensuring technical requirements align with business goals while actively managing and reducing technical debt

What to Expect:

• Strong Planning and prioritization: You will organize the plan so that you and the team can seamlessly shift gears from optimizing a memory allocation issue in the morning to designing a stateless architecture handling thousands of concurrent players in the afternoon
• Stakeholder management: You will work with product owners and game designers to translate their vision into technical reality, reviewing mechanics and proposing a viable, performant alternative
• Architecture engineering: You will marshal monitoring telemetry to ensure the servers stay up during massive traffic spikes and adjust the approach to facilitate high availability
• Product engineering: You will balance the demands of shipping features fast against the necessity of keeping the codebase clean, scalable, and modular
•  
• 6+ years of development experience and 1+ year of leadership experience
• iGaming/Gambling experience will be a huge plus
• Proven Full-Stack Expertise: Deep professional experience in both game client development and scalable server-side backend architectures
• High Tolerance for Complexity: You are comfortable diving into ambiguous problems and designing systems from the ground up
• Proactive Problem Solver: You find and fix memory leaks, architecture flaws, or security vulnerabilities before they ever impact a player
• Exceptional Communicator: You can explain complex backend constraints to non-technical stakeholders and break down creative requirements into clear engineering tasks
• Experienced Leader: You have a track record of mentoring engineers, driving architectural decisions, and leading projects through the full software development lifecycle
• Fluent English + Ukrainian or Russian - must‑have (for communicaton with ukrainian teammates) 

Stack:

• Languages: TypeScript, JavaScript (Node.js), React
• Frontend Graphics & Animation: WebGL rendering, 2D skeletal web animation
• Real-time Communication & Messaging: WebSockets, Event streaming brokers, Remote Procedure Calls
• Video Streaming: Ultra-low latency (sub-second) video streaming architecture utilizing WebRTC, WHIP, RTMP, and SRT for real-time ingest, combined with H5Live, Low-Latency HLS, MoQ, and ABR for global browser-based playback
• Databases & Storage: Relational (SQL), Document (NoSQL), In-memory caching, Columnar/Analytics databases
• Infrastructure & Orchestration: Cloud infrastructure, Containerization, Container orchestration
• Observability & Monitoring: Distributed telemetry, Log aggregation, Time-series monitoring dashboards

We offer

• Competitive Salary in EUR: with annual performance reviews to recognize your growth
• Flexible Remote Work: balance productivity and comfort
• Comprehensive Benefits: including medical insurance, psychologist support and Polish, Slovak speaking clubs
• Generous Paid Time Off: 20 working days of paid vacation, plus 10 additional paid days off, 10 paid sick days, and all national holidays in your country
• Professional Development Support: reimbursement for courses, trainings, and certifications
• Well-being Perks: support for language classes, sports, massages, or life coaching
• 6-Month Probation Period: a standard period to ensure a strong mutual fit for both you and the company

A potential invitation to potential minds!

4K-Soft is People. People are most important to us. People are at the heart of every connection we build. Come and join 4K-Soft, where human minds come together to pave the way for the future. We offer a variety of full-time jobs, training programs and internships. Only imagine, how you can help our company and start your career with 4K-Soft!

We are looking for a Middle FullStack Web Developer.

What we expect from you:
English level: B2 or higher
Experience: 3+ years working with Node.js and React

We offer:

Competitive level of remuneration

Convenient work schedule, paid vacation and sick leaves

The opportunity to grow professionally by participating in the implementation of interesting and complex projects, as well as showing personal initiative.

We are looking for an experienced full-stack engineer who works primarily through AI tools and can take ownership of features end to end. You will join a German product team building business software and mobile apps for their clients. 

The working language is German: meetings, specifications and client communication are all in German.

This is not a classic "write code all day" role. Most of the implementation is done together with Claude and other AI agents. What matters is that you understand the whole system, ask the right questions, judge whether a solution is good enough, and move tasks forward independently.

What you will do
• Deliver features across backend, web frontend and mobile apps, working mainly through AI coding agents (Claude Code or similar)
• Research unfamiliar parts of the system, evaluate the existing implementation and propose what to change
• Clarify requirements directly with the German team and with the client, including business questions
• Work with databases, REST APIs and integrations with the client's ERP and third-party systems
• Spot problems on your own and resolve them
• Take tasks from ticket to release, including testing and handover

Requirements
• 5+ years of commercial software development
• Real full-stack experience: backend, web frontend and at least some mobile development
• Experience with .NET/C# or the ability to work in it confidently; Node.js, React and React Native are also relevant
• Good SQL skills and experience with REST APIs and system integrations
• Daily hands-on use of AI coding tools (Claude Code, Cursor or similar) in real projects, not only for autocomplete
• German at C1 level or higher; you must be comfortable leading a technical or business conversation in German
• Independence: you find the information you need and do not wait for detailed instructions

What we offer
• Remote work, long-term project with a German product team
• A role where AI-driven development is the standard way of working, not an experiment