Jobs Fullstack

Job Summary
As a Software Engineer, you will work directly with AI coding models to evaluate their performance, identify weaknesses, debug incorrect outputs, and create stronger alternative solutions. This role is ideal for developers who enjoy problem-solving, code analysis, and improving how AI understands and generates technical answers.

Key Responsibilities

• Work with Frontier Labs, producing training data to train Al models. 
• Test and evaluate agentic coding models designed to perform complex engineering tasks at a senior developer level.
• Focus on creative problem-finding rather than traditional feature shipping. 
• Ideal candidates use AI, enjoy problem-solving, and like "outsmarting" Al systems. 

Requirements

• 3–4 years of hands-on experience as a Full Stack Developer on commercial projects, including B2B SaaS systems and data-heavy applications.
• Use AI tools (AI agents, Claude Code, Cursor, Codex or similar) in daily workflow.  
• Strong judgment across the full software lifecycle:
  • Reading a PRD and breaking it into Jira tickets
  • Estimating effort and scoping work
  • Architecture and design choices
  • Reviewing PRs
  • Debugging and recovering when blocked
• Strong proficiency with React.js and Node.js, with experience using Express.js or NestJS to build scalable backend systems that support complex business logic.
• Experience designing and integrating REST APIs. 

• Upper-Intermediate English (B2) for effective communication and technical discussions.

   

You will be part of building better AI systems by helping improve the quality, accuracy, and reliability of the answers they provide. If you want to use your engineering skills in a fast-growing AI field, this role is a strong opportunity to contribute to the future of AI-assisted development.

Project Overview

We are looking for a Junior+ Full Stack Engineer to join a product-focused team. The role involves working on web applications across both frontend and backend, building new features, and improving performance and scalability.

Tech Stack

JavaScript (ES6+), HTML/CSS, React, Python, FastAPI, REST API, Git

Requirements

• 1+ year of commercial or strong practical development experience

• Good JavaScript fundamentals (async programming, closures, ES6+)

• Solid HTML/CSS knowledge (responsive layouts, cross-browser compatibility)

• Basic experience with React or similar frameworks

• Python knowledge and backend basics

• Experience with or strong willingness to work with FastAPI

• Understanding of REST API principles

• Ability to write clean and maintainable code

• English level sufficient for technical communication

Responsibilities

• Develop and maintain frontend and backend parts of web applications

• Build and support REST APIs using Python / FastAPI

• Collaborate with designers and engineers on product features

• Improve application performance and scalability

• Participate in code reviews and technical discussions

Nice to Have

• Experience with SQL or NoSQL databases

• Understanding of modern frontend tooling

• Basic cloud or deployment experience

• Technical education (optional)

What We Offer

• Remote work

• Competitive compensation (based on experience and location)

• Long-term collaboration

• Opportunity to grow within a product team

Project Overview

We are looking for a Junior+ Full Stack Engineer to join a product-focused team. The role involves working on web applications across both frontend and backend, building new features, and improving performance and scalability.

Tech Stack

JavaScript (ES6+), HTML/CSS, React, Python, FastAPI, REST API, Git

Requirements

• 1+ year of commercial or strong practical development experience

• Good JavaScript fundamentals (async programming, closures, ES6+)

• Solid HTML/CSS knowledge (responsive layouts, cross-browser compatibility)

• Basic experience with React or similar frameworks

• Python knowledge and backend basics

• Experience with or strong willingness to work with FastAPI

• Understanding of REST API principles

• Ability to write clean and maintainable code

• English level sufficient for technical communication

Responsibilities

• Develop and maintain frontend and backend parts of web applications

• Build and support REST APIs using Python / FastAPI

• Collaborate with designers and engineers on product features

• Improve application performance and scalability

• Participate in code reviews and technical discussions

Nice to Have

• Experience with SQL or NoSQL databases

• Understanding of modern frontend tooling

• Basic cloud or deployment experience

• Technical education (optional)

What We Offer

• Remote work

• Competitive compensation (based on experience and location)

• Long-term collaboration

• Opportunity to grow within a product team

About the client:

Our customer is the European online car market, with over 30 million monthly users and a presence in 18 countries. As a Lead FullStack Engineer, you will play a pivotal role in shaping the future of online car markets and enhancing the user experience for millions of car buyers and sellers.

Responsibilities:

• Developing fast, high-traffic public-facing websites
• Explore new technologies and help the team to use them
• Work using AI tools and apply them to the SDLC
• Following software development best practices while delivering the work
• Following testing principles while testing your own code to ensure production readiness
• Follow the philosophy of: you-build-it-you-run-it (be responsible for the SDLC processes) 

Requirements: 

• 5+ years developing reliable, highly available, and scalable software systems
• Strong understanding of software architecture and design patterns
• Firm grasp of clean code principles and coding standards
• Strong proficiency using AI tooling, such as ChatGPT/Codex, for rapid development

Experience integrating AI tooling into your development environment for streamlined usage

• Experience with AI Frameworks like Vercel AI SDK, LangChain, etc.
• Strong proficiency with backend development with C# 
• Strong proficiency with TypeScript
• Strong proficiency with SQL& NoSQL datastores (GraphQL, Redis)
• Strong proficiency with frontend development (HTML, CSS, JavaScript)
• Strong proficiency with component-based frameworks and SSR (Next.js/React or Vue.js) or Angular with the desire to learn React/ Vue.js.
• Hands-on experience developing and maintaining 3rd party content management systems
• Knowledge of modern cloud infrastructures and tools, such as AWS, Terraform, and Docker
• Experience with APIs and developing in a service-based application environment
• Experience building optimized UIs for performance
• Proficiency with version control systems such as Git
• Experience working within a formal CI/CD pipeline
• Experience with logging, monitoring, and alerting services like Datadog, Newrelic
• Solid approach to testing and ensuring quality of code, Unit testing, backend, and frontend

At least Upper-intermediate English level

• This role requires mandatory timezone coverage: work must align with the Toronto (ET) timezone for LATAM hours and 13:00–21:00 EET for EU hours approximately.

We offer*:

• Flexible working format - remote, office-based or flexible
• A competitive salary and good compensation package
• Personalized career growth
• Professional development tools (mentorship program, tech talks and trainings, centers of excellence, and more)
• Active tech communities with regular knowledge sharing
• Education reimbursement
• Memorable anniversary presents
• Corporate events and team buildings
• Other location-specific benefits

*not applicable for freelancers

We’re looking for a motivated Trainee Full-Stack Developer who is eager to learn and start a career in software development.

You don’t need commercial experience - what matters most is your curiosity, willingness to grow, and genuine interest in technology. We’re ready to support your learning journey, help you gain practical experience, and gradually involve you in real projects alongside experienced developers.

If you're excited about building products and developing your skills in a supportive environment, we'd love to hear from you.

💡 What you’ll be working with

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

Nice to have:

• React Native / Firebase / Expo
   

🔥 What you’ll do

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

• Be part of releases and see your work go live

   

🌱 What matters to us

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

🎯 What you’ll get

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

We're looking for a Full-Stack Developer who enjoys turning ideas into real products. Someone who likes exploring both frontend and backend development, tackling interesting challenges, and contributing to features from concept to release.

If you’re curious, proactive, and excited to see how your work makes a difference for users, we’d love to hear from you.

 

💡 What you’ll be working with

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

Nice to have:

• React Native / Firebase / Expo
   

🔥 What you’ll do

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

• Be part of releases and see your work go live

   

🌱 What matters to us

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

🎯 What you’ll get

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

This is NOT a traditional developer role.
We’re not looking for someone who writes code all day — we’re looking for someone who leads AI agents that write code for you.

This is not “a regular dev job with an AI assistant”.
This is a role for a person who thinks in systems, prompts, and outcomes, not in endless manual coding.

About us

We are a group of companies with 30+ active projects across travel, fintech, mobile apps, and AI products.
We build products through AI agents, and we’re looking for someone who knows how to work with them effectively.

Tech stack:

• Frontend: Next.js, React Native
• Backend / Infra: Vercel, Firebase, Cloudflare

What you’ll do

• Translate product and technical ideas into clear tasks for AI agents
• Guide AI agents to produce production-ready code
• Review, refine, and improve AI-generated code
• Choose the right models and tools for each task
• Push features all the way to production

In short: you manage an AI-powered dev team that writes code for you.

What we’re looking for

• 1+ year of web development experience
• 3+ months of hands-on work with AI coding tools
• Experience working with AI agents (not just autocomplete)
• Ability to read code and do code reviews
• Solid understanding of frontend, backend, and APIs
• Advanced English

Nice to have

• Built projects mostly or fully using AI
• Know how to optimize AI usage for cost and limits
• Actively follow new models and AI dev tools
• Experience with mobile development

What we offer

• 🏢 Office-based role in Warsaw
• 🤖 Unlimited access to top-tier AI models
• 🎯 Direct collaboration with the CTO — no bureaucracy

How to apply

Please include:

• Examples of projects you built using AI
• Your AI setup: tools you use and how you handle limits and costs
• If you’ve only worked with Cursor — what doesn’t work for you in it?

🚀 If you want to build fast, experiment, and shape how products are created with AI — we’d love to hear from you.

Fullstack Engineer (Backend-Focused)

We’re looking for a developer with strong backend and architecture thinking to work on scalable multi-tenant systems, realtime infrastructure, automations, and business-critical platform features.

The role includes both backend and frontend work, but the main focus is backend logic, security, data architecture, and system reliability.

Stack

Backend:
  - Supabase
  - Postgres
  - RLS
  - Realtime
  - Auth
  - Storage
  - pg_cron
  - Edge Functions (Deno + TypeScript)

Frontend
  - React
  - TypeScript
  - Tailwind CSS
  - TanStack Query
  - shadcn/ui

Additional Technologies
  - Stripe
  - Mapbox
  - AI integrations
  - MQTT / IoT
  - Capacitor (mobile)

Responsibilities

- Build and maintain multi-tenant backend systems
- Design secure RLS policies and permission flows
- Develop edge functions and backend business logic
- Work with realtime data and event-driven flows
- Build scheduling, automation and billing systems
- Integrate third-party services and APIs
- Support dashboard and operational frontend features
- Optimize application performance and scalability

Requirements

- Strong TypeScript experience
- Good understanding of Postgres and relational data design
- Experience building backend logic and APIs
- Understanding of authentication, permissions, and security
- Comfortable working across both frontend and backend

Nice to Have

- Stripe billing integrations
- Realtime systems
- AI integrations
- Mapbox or geospatial UI
- MQTT / IoT experience
- Mobile experience with React Native or Capacitor

berko.tech is looking for a backend-focused engineer to design and maintain scalable multi-tenant systems, realtime infrastructure, automations, and core business logic.

The role is primarily backend engineering with a strong focus on data architecture, security, system design, and reliability.

Stack:

Backend Core
  -Node.js
  - Supabase
  - Postgres
  - Row Level Security (RLS)
  - Auth & Permissions
  - Realtime
  - Storage
  - pg_cron
  - Edge Functions (Deno + TypeScript)

Infrastructure & Integrations
  - Stripe (billing systems)
  - AI integrations (tool-calling, workflows)
  - MQTT / IoT systems
  - Mapbox (geospatial data layer, backend side usage)
  - Capacitor backend APIs (mobile support layer)

Responsibilities

- Design and maintain multi-tenant backend architecture
- Implement and maintain RLS-based security models
- Build backend business logic and domain services
- Develop Edge Functions and server-side workflows
- Design scheduling, automation and job processing systems
- Build billing, credits and subscription systems
- Integrate external APIs and third-party services
- Work with realtime event-driven systems
- Optimize database performance and scalability
- Ensure data consistency, isolation and security across tenants

Requirements
- Strong Node.js experience
- Strong TypeScript experience (server-side)
- Strong understanding of Postgres (schema design, indexing, relations)
- Experience building backend systems and APIs
- Understanding of authentication, authorization and security models
- Experience with multi-tenant architectures
- Ability to design scalable backend systems independently

Nice to Have
- Basic understanding of React and React Native
- Experience with Stripe billing systems
- Experience with realtime systems (websockets / event streams)
- AI workflow integration experience (tool-calling, orchestration)
- MQTT / IoT systems experience
- Geospatial / Mapbox backend data handling
- Experience with scheduling systems / job queues / cron orchestration

Focus of the Role

This role is backend-first and centered around:
- system architecture
- database design
- security and access control
- multi-tenant isolation
- realtime and event-driven systems
- automation and scheduling logic
- billing and usage tracking

About the Project

Our client is looking for a Software Engineer who operates at the intersection of high-scale full-stack engineering and cutting-edge Applied AI.

In this role, you won’t just "write code", you will design and ship intelligent, cloud-native systems for our Maritime Intelligence Agentic platform. Our systems are used by defense agencies, governments, and global enterprises to secure trade and enforce compliance at sea. You will be expected to work autonomously, influence our core architecture, and significantly raise the bar for AI-assisted development within the team.
 

Required skills:

● A Professional Engineer: You have 7+ years of professional full-stack or backend engineering experience, including 2+ years of experience building agents or agentic workflows in production at scale within a distributed system architecture.

● An AI-Native Engineer: You are excited about agentic development and agent-based operations. You are proficient in high-scale AI-based development, utilizing tools like Claude Code, Cursor, or Copilot in a highly autonomous fashion, and are a strong, independent individual contributor who can work effectively alone or in small, ad-hoc groups.

● Distributed & Cloud Architecture: You have proven experience with GraphQL or REST and designing scalable, cloud-based distributed architectures, including event-driven patterns. You are comfortable with AWS (K8S, Serverless, Event-driven), messaging (SQS, SNS) and databases (PostgreSQL, DynamoDB, MongoDB).

Experience with Vector DBs is a plus.

● A Craftsman: You take pride in clean code, thoughtful design, and production-grade security, operations and observability. You are accountable, independent, and thrive in ambiguous environments.

Technical Requirements

● Agentic Frameworks (Mandatory): Proven expertise building autonomous agentic systems using frameworks such as LangChain, LangGraph, DeepAgents, CrewAI, OpenClaw, or Hermes (or able to demonstrate equivalent expertise on another relevant framework).

● Backend Languages: Fluent in Python (preferred) or TypeScript/Go/Rust, with proficiency in transitioning to Python.

● Infrastructure & IaC: A solid background with the AWS stack, including Kubernetes (K8S), Terraform (IaC), and CI/CD is essential (Helm is a strong plus).

● Nice to Have: Experience with frontend stack (NextJS, React.js, or similar)

Scope of work:

● Architect & Build: Design and deliver agentic workflows and scalable microservices, primarily using Python, within a distributed system architecture.

● AI Integration: Lead the integration of Generative AI capabilities, including LLM APIs, RAG pipelines, and agentic workflows into our production systems.

● Agentic Operations & Observability: Implement operational practices, observability, and autonomous monitors (e.g., detecting intelligence drift or hallucinations) to ensure AI reliability in production.

● Elevate Engineering: Drive overall engineering quality and speed by implementing AI-SDLC practices, ensuring high standards through rigorous code reviews, testautomation, and by establishing continuous, trace-based quality evaluation for all software and agentic components.

● Mentor & Innovate: Evaluate emerging AI tooling, mentor fellow engineers, andcontribute directly to our technical roadmap.

We at Mria Labs are developing products for the Atlassian marketplace, and we are currently looking for a talented Node.js / React Engineer to join our team.

Core (must-have)

• 5+ years of professional TypeScript experience across frontend and backend
• 5+ years of React.js, with deep understanding of hooks, context, and component composition
• Strong TypeScript fundamentals (generics, decorators, reflect-metadata, strict mode)
• MobX experience
• TanStack React Query (or strong Redux-Toolkit Query / SWR background — server-state separation matters)
• Solid HTML/CSS, styled-components or another CSS-in-JS library
• Form-heavy app experience with Formik + Yup (or React Hook Form + Zod)
• Node.js (24.x) backend development
• SQL (MySQL dialect, TiDB) — schema design, query optimization, migrations
• Experience with an ORM/query-builder like Drizzle, Prisma, TypeORM, or Knex
• REST APIs and async/event-driven processing (message queues, scheduled jobs)
• Git, code review discipline, GitLab CI/CD pipelines
• Jest + React Testing Library; ability to write integration tests over mocks
• English — Intermediate (B1) or higher

Strongly preferred

• Atlassian Forge platform experience (forge/resolver, forge/sql, forge/kvs, forge/bridge, async events, scheduled triggers) — this is the single biggest differentiator
• Atlaskit / Atlassian Design System component library
• Jira REST API / Confluence API integrations
• Vite build pipeline
• IoC / Dependency Injection with InversifyJS
• Class-based DTO validation: class-validator + class-transformer
• Rich-text editor work with Lexical (or Slate/ProseMirror)
• Charting with Chart.js / react-chartjs-2
• Bulk import/export pipelines, XLSX/CSV parsing
• Sentry for error monitoring; SonarCloud for code quality
• Luxon (or date-fns) for timezone-aware date handling

Nice to have

• Experience building Rovo AI agents or other LLM-tool integrations (Atlassian AI platform)
• Drag-and-drop UX with atlaskit/pragmatic-drag-and-drop
• Pre-commit tooling: Husky, lint-staged, Knip (dead-code detection)
• Multi-tenant SaaS experience (workspace isolation, RBAC)
• CRM / sales-pipeline / lead-management domain knowledge

Responsibilities:

• Developing new user-facing features using React.js;
• Improving current functionality;
• Building reusable components and front-end libraries for future use;
• Translating designs and wireframes into high-quality code;
• Optimizing components for maximum performance across a vast array of web-capable devices and browsers;
• Collaborating with cross-functional teams to define, design, and ship new features;
• Participating in code reviews and ensuring that all solutions are aligned with business objectives and meet design requirements;
• Staying up-to-date with the latest front-end development trends, techniques, and technologies;

We offer:

— Competitive salary and perks;

— Comfortable, modern and green offices;

— Working with cutting edge technologies;

— Friendly team and nice environment;

— A positive atmosphere all over the company;

— Full-remote with absolutely flexible hours;

— 100% compensation for your development — professional courses, certificates, conferences, etc.

Project description

Applying to the position, you may join one of the most respected and fastest growing institutional investors in the world. Our client is a professional investment management organization that globally invests the funds to ensure long-term sustainability. The company invests in all major asset classes, including public equity, private equity, real estate, infrastructure and fixed-income instruments, and currently has offices in Toronto, London, Hong Kong, New York, São Paulo, Luxembourg and Mumbai.
Client attracts and selects high-caliber individuals from top-tier institutions around the globe. Join our team and look forward to:
• Diverse and inspiring colleagues and approachable leaders
• Stimulating work in a fast-paced, intellectually challenging environment
• Accelerated exposure and responsibility
• Global career development opportunities
• Being motivated every day by important social purpose and unshakable principles
• A deeply rooted culture of Integrity, Partnership and High Performance
If you share a passion for performance, value a collegial and collaborative culture, and approach everything with the highest integrity, here's an opportunity.

Responsibilities

Manage timelines/deliverables within the team towards the successful delivery of projects.

Design software solutions by interacting with portfolio managers, traders, operations staff and peers to understand requirements.

Develop solutions that are in line with client's technology biases, deliver efficiency and scalability, and enable new trading activities.

Provide knowledge transfer to team members and support staff through application demos, walkthroughs, and documentation.

Skills

Must have

Experience in Python in an enterprise environment, covering the whole development life cycle

Experience with web development using either Angular, React or Dash Plotly.

Agile/scrum/Jira/confluence/Git

Experience with Cloud technologies, preferably AWS

Proficiency in CI/CD pipelines

Unit and integration testing

Nice to have

Capital market experience

Experience with BI tools, preferably QuickSight.

Experience with terraform for Infrastructure as code and cloud provisioning.

Experience with Jupyter notebooks for data analysis and reporting.

TraffBraza шукає Strong Middle / Senior Fullstack PHP Engineer для розвитку окремого SEO-напрямку.
Ми шукаємо інженера, який не просто пише backend, а розуміє, як технічні рішення впливають на SEO, індексацію та масштабування органічного трафіку.

Ти будеш працювати над SEO-проєктами, внутрішніми платформами, генераторами сторінок, адмінками та сервісами, які обробляють великі об’єми SEO-сторінок і трафіку.

Що потрібно робити

• Розробляти та підтримувати SEO-проєкти на PHP
• Створювати backend-логіку для генерації сторінок, шаблонів та метаданих
• Реалізовувати технічне SEO:
  • sitemap.xml
  • robots.txt
  • canonical
  • redirects
  • OpenGraph / Twitter Cards
  • schema.org
• Оптимізувати швидкість сайтів та Core Web Vitals
• Працювати з великою кількістю landing pages / programmatic SEO pages
• Розробляти внутрішні інструменти та адмінки для SEO-команди
• Інтегрувати сторонні API, аналітику та внутрішні сервіси
• Працювати з кешуванням, CDN, чергами та оптимізацією навантаження
• Використовувати AI-інструменти для прискорення розробки та прототипування

Наш стек

Backend

• PHP 8+
• MySQL / PostgreSQL
• Redis
• REST API
• Queues / Jobs / Workers
• Composer
• PHPUnit / Pest

Frontend

• Blade / Twig
• JavaScript / TypeScript
• Vue / React / Alpine.js
• Tailwind CSS / Bootstrap

SEO / Infra

• SSR (server-side rendering)
• sitemap.xml
• robots.txt
• canonical
• schema.org
• OpenGraph / Twitter Cards
• Core Web Vitals
• CDN

Tools

• Git
• Docker
• CI/CD
• Linux basics
• ChatGPT / Claude / Cursor / Copilot / Windsurf

Що очікуємо від кандидата

• 3+ роки комерційного досвіду у fullstack-розробці
• Впевнений досвід з PHP 8+
• Досвід роботи з REST API
• Практичний досвід з MySQL
• Розуміння кешування, CDN та оптимізації продуктивності
• Досвід з Blade/Twig та сучасним frontend
• Розуміння server-side rendering і його впливу на SEO
• Знання технічного SEO:
  • індексація
  • sitemap
  • robots.txt
  • canonical
  • redirects
  • SEO-friendly URLs
  • Core Web Vitals
• Досвід роботи з Git, CI/CD та code review
• Вміння писати підтримуваний та структурований код

AI-assisted development / vibe coding

Для нас AI — це частина сучасної розробки, а не просто “генератор коду”.

Буде важливо, якщо ти:

• вмієш працювати з ChatGPT / Claude / Cursor / Copilot
• швидко прототипуєш рішення через AI
• перевіряєш та рефакториш AI-generated code
• використовуєш AI для:
  • boilerplate
  • тестів
  • рефакторингу
  • документації
  • аналізу помилок
  • SQL-запитів
  • роботи з legacy-кодом

Буде плюсом

• Досвід роботи з SEO-проєктами
• Affiliate / Gambling / Betting / Crypto / Leadgen ніші
• Programmatic SEO
• Multi-language / multi-region сайти
• WordPress / October CMS / Craft CMS
• Docker / базовий DevOps
• Google Search Console, Ahrefs, Lighthouse
• SQL optimization, caching, CDN, image optimization

Умови

• Fully remote
• Гнучкий старт робочого дня (9/10/11)
• Оплата на українську карту або crypto
• Відпустки без ліміту
• Лікарняні до 100 днів/рік
• Корпоративна підписка на Claude Code

Johnson Controls is an international technology company and a global leader in smart buildings, electronic security systems, automation, and fire protection solutions.

We are expanding our engineering team and looking for an experienced Full Stack Developer who is passionate about scalable systems, clean architecture, and modern web technologies.

What You’ll Work On

Design and develop scalable web applications
Build and maintain RESTful APIs
Develop modern frontend interfaces using React/Redux
Work with databases and backend architecture
Improve system performance, maintainability, and security
Collaborate closely with international engineering teams
Participate in product improvements and technical decision-making

Required Skills & Experience

Backend

Strong commercial experience with PHP
Solid understanding of OOP principles
Experience building and supporting REST APIs
Good knowledge of MySQL / MariaDB

Frontend

Strong experience with:
JavaScript
HTML/CSS
React / Redux

Infrastructure & Environment

Good experience working with Linux environments
Understanding of server-side deployments and development workflows
Experience with Git and collaborative development processes

Nice to Have

Experience with Node.js
Experience with Go or Dart
Experience with Apache Thrift RPC
Experience with scalable architecture and high-load systems

What We Offer

Remote work
Stable long-term international project
Professional and supportive engineering environment
20 paid vacation days + 8 paid sick days
Medical insurance
Standard 8-hour workday
Opportunity to work on enterprise-grade products
Career growth and development opportunities inside an international company
Exposure to modern technologies and global engineering practices
 

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