Jobs Fullstack

Summary

Senior Backend Engineer, Node.js, Postgres. Remote role building core platform systems for an enterprise AI product. 5+ years experience required.

About the company

Our client builds an AI platform that enables enterprises to customize and deploy AI capabilities for their specific needs. The platform team is central to this work, responsible for infrastructure, shared components, and internal tooling that the rest of engineering depends on. The team works closely with product and applied AI engineers, with short feedback loops and genuine technical ownership.

The role

This is a backend-focused engineering position working on core platform systems. You'll design and build the foundational services that AI-native products run on — dealing with architecture decisions, performance problems, data modeling, and system reliability.

The work is technically demanding. When something difficult or critical needs to be solved properly, this role is expected to lead that effort.

What you'll work on

• Designing and implementing backend services and system components end-to-end
• Building infrastructure that supports fast iteration without sacrificing reliability
• Investigating and resolving complex issues across performance, data, and APIs
• Collaborating with platform, AI, and product teams to deliver systems that are observable and maintainable
• Improving developer experience through better tooling, clearer standards, and thoughtful architecture

What we're looking for

• 5+ years of software engineering experience with JavaScript tech stack, with clear ownership of complex backend systems
• Strong Node.js proficiency- clean, well-structured backend code matters here
• Solid understanding of relational databases (PostgreSQL) and data modeling
• Good debugging instincts and sound engineering judgement
• Ability to learn new domains quickly and work independently

Useful additions

• Experience with distributed systems, caching layers, message queues, or multi-tenant architectures
• Background in AI/LLM integration on the backend
• Familiarity with AI development platforms or coding assistants
• Previous work on enterprise platforms or AI infrastructure
• Platform/infrastructure experience: observability, CI/CD, API design

— Remote (Europe only)

— Full-time

Intelvision is looking for a skilled Senior Full-stack Engineer (.NET, React/TypeScript)

The platform enables companies to scale and develop a sustainable revenue stream through partnerships. It combines an easy-to-use product, hands-on expertise, and a rich library of resources to help businesses build stronger partner ecosystems.

Responsibilities:

— Develop and maintain full-stack features using .NET (backend) and React / TypeScript (frontend) in a production environment;

— Collaborate closely with the existing team;

— Participate in technical discussions and contribute to implementation planning;

— Follow agreed architectural decisions and contribute to improving architecture;

— Write clean, maintainable, and testable code aligned with project standards;

— Own product quality through manual QA validation and peer functional testing;

— Ensure completeness, stability, and business alignment of delivered features;

— Support and improve existing functionality, including refactoring when needed;

Requirements:

— 5+ years of commercial experience with real-life production projects;

— Strong hands-on experience with .NET, React, TypeScript, SQL, Semantic UI;

— Strong communication skills;

— Ability to collaborate effectively in a team environment;

— English level: Intermediate/Upper-Intermediate;

Would be a plus:

— Experience working with Claude Code;

— Knowledge of BDD / SpecFlow;

— Experience with React Redux;

What we offer:

— Remote-first work environment;

— Supportive, performance-driven team culture;

— Paid sick leaves and vacations;

— Complete hardware package;

— Refund of personal professional growth (courses, platforms, etc);

— Personal development plan;

— Internal accountant;

— Ability to select currency for your contract.

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.

Skills

• Commercial experience in software development projects
• Working experience with Next.js, React, Tailwind, PostgreSQL, Prisma
• Strong knowledge of JavaScript, Data Algorithms and Structures
• Hard-working, smart, proactive, goal oriented, open in communication, not afraid to voice your own opinion
• Willing to take part in business and design decisions and analysis
• Experience with Python - preferable
   

Do not hesitate to apply if you are missing specific experience.

We Offer

• WFH and flexible working hours

Requirements

• Develop new features and improve existing ones for Valid-X 's products.

• Proactively take part in design and marketing discussions, take responsibility for products from the technology side.

   

Project description

• Social wiki platform website 
• Tech stack: Next.js, Node.js, PostgreSQL, Prisma, Vercel

• Other projects

   

Who we are:

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

About the Product:

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

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

About the Role:

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

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

Key Responsibilities:

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

Required Competence and Skills:

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

Nice to Have:

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

Why Us:

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

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

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

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

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

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

Requirements:

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

We offer:

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

• English lessons with native-speaking instructors.

   

Further information will be shared at the interview stage.

Kindly add your Telegram username to your CV.

SaaS Platform · React + Fastify · PostgreSQL

About the Project

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

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

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

The Role

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

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

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

Claude Code is a hard requirement.

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

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

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

What You’ll Build

Backend Architecture

• Fastify REST API

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

• Database

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

• Authentication & Authorization

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

• Caching Layer

  Redis for sessions and performance optimization

• Validation & Types

  Shared Zod schemas between frontend and backend

• API Design

  RESTful endpoints with structured error handling and consistent responses

Infrastructure & DevOps

• Monorepo Setup

  pnpm workspaces separating frontend, backend, and shared packages

• CI/CD

  GitHub Actions with automated tests, security checks, and deployments

• Environments

  Isolated staging and production environments

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

• Containerization

  Docker-based local and production environments

Integrations

• OpenAI API

  Document parsing, analysis, and intelligent matching logic

• Email Services

  Resend or SendGrid with template-driven transactional emails

• File Storage

  Secure uploads via Supabase Storage or AWS S3

• Monitoring & Analytics

  Sentry (errors) and PostHog (product analytics)

Testing & Quality

• Backend Testing

  Vitest for unit and integration tests with test databases

• End-to-End Testing

  Playwright covering full user workflows

• Code Quality

  ESLint, Prettier, Husky pre-commit hooks

• API Documentation

  Auto-generated OpenAPI specs from Zod schemas

Required Experience

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

Tech Stack

Frontend (Existing)

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

Backend (Developing)

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

Infrastructure

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

Third-Party APIs

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

Highly Desirable

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

Required Skills (Experience Level)

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

Who We Are:

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

About the Product: 
The product is a security-aware platform built to help enterprises monitor, analyze, and optimize the digital experience across all employee devices and environments, whether on-prem, virtual, or cloud-based. It gives IT teams real-time visibility into system performance, application stability, and end-user experience, with the ability to automatically detect and remediate issues before they cause disruptions.
 

The product has seen strong traction globally, with significant year-over-year growth and increasing demand from large, distributed teams that need to secure and stabilize digital environments without adding complexity.

About the Role: 
We’re hiring a Senior Full-Stack Engineer to join a growing engineering team working on an industry-leading Digital Employee Experience (DEX) platform. The team develops solutions for the monitoring and control of physical endpoints, leveraging a modern stack and cloud platforms.

You’ll be part of a high-skill group tackling challenging engineering problems: scaling distributed systems, designing micro frontend architectures, and building shared libraries that impact multiple product areas. This is a chance to work with cutting-edge technologies and AI-assisted development tools while shaping the future of endpoint monitoring and workplace automation.

Key Responsibilities: 

• Contribute as a senior member of the full-stack engineering team
• Develop and enhance both frontend and backend components
• Collaborate on architectural decisions and implementation of modern design patterns
• Work with cloud services and scalable data technologies
• Improve productivity and code quality using AI-assisted development tools.

Required Competence and Skills:

• BS/MS in Computer Science or Engineering (or equivalent experience)
• 5+ years of professional experience in full-stack development (both frontend and backend) using JavaScript
• 3+ years with React (single-page apps, modern frontend paradigms)
• 2+ years of hands-on experience building microservice-based applications using Node.js
• Proficiency in ECMAScript, HTML5, SCSS, Babel, Webpack
• Strong knowledge of OOP and design patterns
• Familiarity with micro frontend architecture and module federation
• Experience with cloud platforms (Azure preferred, AWS or GCP acceptable)
• Proven experience in building shared/common packages
  Solid understanding of UX/UI design principles
• Experience with AI-assisted development tools (e.g. GitHub Copilot, Cursor, Claude Code, etc.)

Nice to have:

• Knowledge of .NET for working with agents on Windows/Linux/Mac
• Familiarity with CI/CD pipelines and DevOps practices.

Why Us?

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

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

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

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

Join a team that's redefining banking technology!

Our client isn't a typical Swiss bank — it's a modern financial institution focused on delivering cutting-edge online trading and financial services. Unlike traditional banks weighed down by legacy systems, their tech stack is lean and innovative.

The team builds products that transform complex, fragmented risk data into clear, actionable insights, enabling smarter and faster decisions to reduce risk. We focus on core business areas such as account risk and work closely with key stakeholders - Risk department, Compliance department, and the Middle Office Fraud Center — to deliver impactful solutions.

You'll be part of a Scrum team of four, collaborating daily with stakeholders through stand-ups, status updates, and Agile ceremonies. We embrace best practices and modern communication tools: Zoom, Teams, Outlook, JIRA, Confluence, and more.

We continuously evolve our solutions to atomic microservices and self-contained systems, based on dockerized environments with CI and CD.

What we offer:
Professional Growth: access to local trainings, on-demand webinars, interactive workshops, and support for conferences and certifications.

Competitive Compensation: Regular annual reviews based on your performance and professional development.

Work-Life Balance & Fun: Team-building activities, corporate events, hackathons, and a variety of engaging initiatives.

If you're proactive, creative, and ready for new challenges, join us! Together, we'll enhance product quality and optimize processes while driving innovation.

Responsibilities

Overall responsibility for a team, its performance

Driving the Scrum processes, coaching the team, driving improvements

Contributing towards the technical direction of the products by being involved in technical design and delivery of components

Identifying potential risks and escalating to the manager and client

Communicating and interacting effectively with other Team Leads

Participation in meetings with the client (Stand Ups, Grooming, Planning, Demo, Retro, and other ad-hoc ones)

Requirements refinement, Sprint planning, and task estimation

Application development

Developing unit/integration tests, E2E, ensuring good development testing coverage

Lead a team of 3 developers

Participate in peer design and code reviews

Evaluate and adopt new development tools, libraries, and approaches to improve delivery quality

Skills

Must have

1+ year in Team Lead position [fresh experience during last 5 years]

At least 5+ years of proven experience in a Software Developer position

Java core, Java 11-17+ features

OOP/OOD knowledge, design patterns

HTML, CSS, JavaScript

Proven knowledge of ReactJS, Redux or Angular [2+ fresh years of proven experience]

Unit testing frameworks (JUnit, Mockito, etc.), experience of integration and E2E tests building

Spring framework, IOC

RESTfull services

Java-based application servers (e.g. Tomcat)

SQL knowledge, any RDBMS, Oracle/PostgreSQL is a plus

ORM, Hibernate in particular

CI tools experience (Jenkins)

Docker

Nice to have

Education: Bachelor's / Master's degree in computer science or computer engineering

Experience in finance/banking business domain

Unix usage experience

Kafka

Java 17+

WebSocket

TypeScript

US Company is searching for a couple of Senior C# / React.js full-stack developers into a complex, enterprise-level project - SaaS, which allows multiple functions for safety and health insurance on high-risky industries (oil and gas gathering, chemical, energy etc). Interesting project with cutting edge technologies, distributed team, full-time, an official contract. Remote work, flexible schedule.

Brief project description:

• The product is SaaS, which allows multiple functions for sustainability & operational risk management.

Key areas of responsibility:

• Full-stack development across all layers from desktop clients, backend services and data layer, to API development and user interface
• Develop functionality, services, and applications in C# and React.js
• Improve software quality by addressing issues identified by QA or customers
• Modularize applications and help to define and implement interfaces in our internal APIs.
• Refactor modules to address the most relevant weak spots.
• Analyze requirements, suggest concepts, and assess development efforts.
• White box testing and development of unit tests
• Technical system documentation (source code documentation, external documentation, bug-tracking system etc.)
• 3rd-level support

Required skills (at least one or more for each category):

• C#, React.js, Rest API
• Fluent in English.

Skills considered a plus:

• Domain expertise in life-cycle assessment, or a strong passion for the field
• Experience in building web/cloud applications
• Azure experience
• Experience with linear algebra problems and tools
• TDD experience
• Delphi

Work conditions:

• Distributed team, remote work.
• Kanban or scrum approach, 5-6 team members / team.
• Full-time (40 hours per week).
• Official contract: salary, sick-leave days, holidays, vacations.

Hiring process:

• Step 1 - preliminary interview (main questions) - 30 mins
• Step 2 - internal tech interview (tech questions) - 40-50 mins
• Step 3 - tech interview with team leader and architect - 1 hour

Role Overview 

We are seeking a Senior Software Engineer to architect and scale our platform-level agentic AI systems. This role combines full-stack engineering excellence with deep expertise in LLM-powered experiences. You’ll design, implement, and optimize core components across frontend, backend, and model integrations, while driving engineering direction in close collaboration with our co-founders. Your work will directly shape the reliability, speed, and cohesion of company’s multi-agent ecosystem.

Key Responsibilities 

• Architect and implement cross-agent systems that power core platform experiences.
• Build and scale full-stack product components using TypeScript/React and Python services.
• Integrate LLMs into production workflows with strong contracts, observability, and test coverage.
• Develop shared UI components and typed SDKs to unify cross-agent experiences.
• Lead engineering direction, collaborating with founders and cross-functional stakeholders.

Requirements

• Senior-level full-stack experience in React, TypeScript, and Python.
• Proven ability to design, ship, and scale LLM-powered applications.
• Expertise in API design, streaming, and CI/CD pipelines.
• Strong cloud infrastructure background (AWS, GCP, or Azure).
• Track record of building reliable systems with measurable performance and error budgets.

Nice-to-Have 

• Experience with WebRTC or audio-aware UI design.
• Hands-on work with agentic AI frameworks.
• History of creating design tokens, SDKs, or cross-agent platforms.

First-Month Focus

• Audit current cross-agent flows for UI/UX cohesion.
• Implement shared components and typed contracts for reliability.

• Establish instrumentation for frontend performance and model round-trip tracing.

   

Success OKRs (90 Days)

• Deliver end-to-end tested, production-grade agentic workflows with <5% error rates.
• Launch cross-agent design system and SDK used by at least 2 internal teams.
• Establish weekly “deploy and measure” cadence with performance metrics and error budgets.
   

Culture Fit

• Persistent, driven problem solver
• Willing to push back on leadership to defend quality/timelines
• Thrives in high-ambiguity, fast-paced startup environments

About Us

👏 Team from OpenAI, DeepMind, NASA, GoogleX, Tesla, and 2 physicians: 6 exits, 2 IPOs.

🔥 Our model outperforms Claude, Gemini, and GPT-4.5 on clinical benchmarks.

📈 400+ healthcare orgs signed in 16 months.

⚡️ $25M raised from YC, Amity Ventures, Sequoia scouts, and more.

🌎 $1T+ market opportunity. We’re going after all of it.

Why Join Us?
🔥 Shape the Future of Healthcare: Build category-defining partnerships that enable doctors to focus on saving lives.
📈 Early-Stage Impact: Join early and play a critical role in shaping our partnership roadmap and overall company growth.
🌎 Remote-First Culture: Work with a talented, mission-driven team in a flexible, remote environment.
💰 Competitive Compensation: Enjoy a competitive salary, equity, and the opportunity to make a real difference.
🏆 Solve Scalability Challenges: Tackle complex challenges in a rapidly growing company, driving impactful change in healthcare.

The Full Stack Developer is responsible for designing, developing, and maintaining both frontend user interfaces and backend services in alignment with approved enterprise architecture, security standards, and governance frameworks.

This role ensures that delivered features meet functional and non-functional requirements while providing seamless integration between UI, APIs, databases, and Azure cloud infrastructure.

The position operates within defined architectural boundaries and collaborates closely with Solution Architects, Product Owners, QA, DevSecOps, and UI/UX teams to deliver secure, scalable, high-performance digital solutions.

Role Purpose

Design, develop, and maintain end-to-end application features across frontend and backend layers while ensuring alignment with architectural, security, and performance standards.

Requirements

Must-have

• 4+ years of professional full-stack experience (enterprise web apps)
• Strong TypeScript + React and/or Angular experience (shipping production UIs)
• Strong .NET 6+ experience building ASP.NET Core Web APIs
• Solid SQL Server skills (queries, indexing basics, performance tuning mindset)
• Practical secure coding knowledge (OWASP Top 10; not just buzzwords)
• Experience with authentication/authorization in web apps (JWT/OAuth2)
• Testing culture: unit tests + basic integration/e2e where appropriate
• Git + PR workflows (code reviews, branch protection)
• English B2+ (you can explain security tradeoffs and write clear PRs)

Nice-to-have

• Azure production experience (App Services, Functions, Storage, Key Vault, App Insights)
• Docker basics; microservices patterns; API gateway familiarity
• Experience modernizing legacy codebases / imperfect documentation
• SAST tooling experience (Veracode/Sonar/etc.)
• Arabic fluency

Recommended Certifications

AZ-204 (Azure Developer Associate)

AZ-900 (Azure Fundamentals)

Secure Coding / OWASP Training

Microsoft Security Certifications (Optional but preferred)

Full-Stack Developer (Python / React) — AI Healthcare Platform

About the role

We’re looking for a Full-Stack Developer with strong Python backend experience and modern React / Next.js frontendskills to help build secure, scalable AI-powered healthcare applications.

You’ll work on APIs, data-intensive systems, and intuitive UIs used for clinical insights and AI-driven workflows.

Backend Requirements (Python)

Required

• 4+ years of professional experience with Python

• Experience with PostgreSQL or other relational databases

  (schema design, indexing, query optimization)

• Experience building RESTful and async APIs

  (FastAPI, asyncio, aiohttp, or similar)

• Strong understanding of Python concurrency and parallelism
• Experience with ORMs (SQLAlchemy or similar)
• Background job systems (Celery, RQ, or similar concepts)

• Experience integrating AI / LLM services

  (OpenAI, Anthropic Claude, LlamaIndex)

• Experience with vector search / embeddings

  (pgvector, OpenSearch, Pinecone, or similar)

• Message queues: Redis, RabbitMQ, Kafka
• Familiarity with AWS: S3, EC2, RDS, CloudFront, SES, OpenSearch
• Experience writing tests with pytest (including async tests)

Nice to have

• Experience with HIPAA compliance
• Background in healthcare, medical data, or EMR systems
• Familiarity with FHIR APIs

Frontend Requirements (React)

Required

• 3+ years of experience with React 18+
• Strong TypeScript skills (strict mode)
• Experience with Next.js (App Router, SSR concepts)
• Tailwind CSS (utility-first, responsive layouts)
• Component libraries: Radix UI or similar
• State management: Zustand and/or React Context
• Data fetching: SWR or similar
• Forms: React Hook Form + validation libraries
• Data tables (TanStack Table, virtual scrolling)
• Frontend testing: Jest, React Testing Library
• Familiarity with Feature-Sliced Design (FSD)
• Strong understanding of accessibility (WCAG 2.1 AA)
• Experience with WebSockets for real-time features
• PDF rendering (PDF.js or similar)
• Comfortable with Git workflows and code reviews

Backend Responsibilities

• Design, implement, and maintain secure, well-documented APIs
• Build backend services for AI chat and clinical insights
• Parse and process data from documents, EMRs, and third-party APIs
• Design and optimize PostgreSQL data models
• Efficiently handle large datasets and historical patient records
• Integrate backend systems with LLMs and vector databases

Frontend Responsibilities

• Build and maintain responsive, accessible UI components
• Implement complex UI features: forms, tables, dashboards, real-time updates
• Follow Feature-Sliced Design principles
• Manage global and feature-level state effectively
• Integrate frontend with backend APIs
• Optimize performance for large datasets
• Build data visualizations and clinical timelines
• Monitor and improve Core Web Vitals and bundle size

Project description

We are looking for a Senior Full Stack Developer to join our team and work on digital media platforms with high daily traffic.

Our client is a media company that develops and maintains several large online news portals used by thousands of users every day. The platforms deliver real-time news, sports updates, and digital content to a broad audience and require continuous feature development, performance optimization, and system scalability.

You will work on both frontend and backend development, contributing to new features, platform improvements, and technical decisions throughout the development lifecycle.

Responsibilities

• Develop and enhance features for large-scale web platforms
• Build modern frontend solutions using React
• Implement and maintain backend functionality using PHP
• Work with APIs, databases, and integration with existing systems
• Participate in technical design and architecture decisions
• Estimate development efforts and evaluate technical feasibility
• Ensure code quality through reviews, testing, and deployment best practices
• Collaborate with cross-functional teams including product, design, and engineering
• Contribute to engineering standards and best practices within the team
   

Requirements

• 5+ years of professional experience in software development
• Strong expertise in JavaScript / TypeScript
• Solid experience with React
• Strong knowledge of HTML5 and CSS
• Backend development experience (preferably PHP)
• Experience working with APIs and databases
• Understanding of modern frontend architecture, performance optimization, and state management
• German language proficiency at B1 level or higher
• English level Upper-Intermediate or higher
• Ability to work collaboratively in a team environment
• Strong problem-solving and analytical thinking
   

Nice to have

• Experience working with different CMS platforms
• Experience in large-scale or high-traffic web products
• Understanding of project management processes in IT
• Experience participating in product or technical discovery
   

About Apiko

Apiko is a web and mobile development company that builds high-quality software solutions for businesses worldwide.

We deliver advanced digital products across multiple industries, helping companies remove the barriers of time and location through modern technology. Our main technologies include React.js, React Native, Meteor.js, Node.js, and Express.js.

Our team works closely with international clients to deliver scalable, reliable, and innovative software solutions.

Company and benefits

• Work in a progressive and fast-growing international team with democratic management
• Competitive salary and regular performance reviews
• Official long-term employment
• Healthcare compensation
• Personal learning budget and internal technical trainings
• All necessary equipment provided or compensation for your own equipment
• Complete tax compensation and assistance from a personal accountant
• Comfortable office in the city center in Ternopil or remote work
• Opportunity to grow professionally and develop your skills
   

About the Product:

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

About the Role:

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

Key Responsibilities:

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

Required Competence and Skills:

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

Nice to Have:

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

Why Us:

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

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

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

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