Jobs Fullstack

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

About the role:
We are looking for a Full-Stack AI Platform Engineer to join our team and help build, maintain, and scale AI-powered interactive products.
This is a hands-on role for an engineer who owns deployment, infrastructure, real-time systems, and AI-service integration end to end. You will work on production systems that combine web applications, real-time communication, Kubernetes-based backend services, and GPU-hosted AI pipelines.
The core of this role is production reliability and deployment ownership — keeping live systems stable, responding to incidents, and integrating AI models into scalable real-time infrastructure. Frontend work exists but is secondary: the team has a designer and uses AI-assisted tooling for UI iteration.

Responsibilities:
- Own deployment, environment management, and release workflows across Kubernetes-based, Railway-hosted, and other cloud infrastructure.
- Respond to production incidents, perform rollbacks, and restore service stability, including outside business hours.
- Deploy and operate AI inference services on GPU platforms such as Modal or RunPod and integrate them into real-time product flows.
- Build and maintain real-time communication and async processing flows, including LiveKit-based session infrastructure.
- Work with TypeScript / JavaScript and Python application code in production environments.
- Support database-backed product features, schema evolution, and migration workflows.
- Improve observability, logging, monitoring, and incident debugging workflows.
- Contribute to frontend and backend product functionality as needed, using AI-assisted tooling where appropriate.
- Maintain clear and up-to-date documentation for every product, service, and integration, including architecture diagrams, API contracts, deployment procedures, and environment configuration.
- Ensure every new feature is discussed, scoped, and agreed upon before implementation begins. No undocumented or uncoordinated changes to production systems.
- Collaborate with engineering and product stakeholders to clarify requirements, identify risks, and ship practical solutions.

Required skills:
- Strong hands-on experience with TypeScript (Node.js) and Python for production backend development.
- Solid experience with Kubernetes, Helm, and container-based deployment workflows.
- Experience with real-time systems: WebSocket-based communication, session lifecycle management, and event-driven flows.
- Experience deploying and operating AI inference services on GPU platforms such as Modal, RunPod, Replicate, or similar.
- Experience integrating LLM-based services, voice AI APIs, or media-processing pipelines into production systems.
- Experience debugging distributed or multi-service systems, including reading logs across multiple services and environments.
- Comfort with production ownership: incident response, rollbacks, and on-call responsibility.
- Solid understanding of backend APIs, service integration, and system design.
- Experience with PostgreSQL and ORM-backed schema management and migrations.
- Sufficient frontend experience to ship and deploy UI changes with AI-assisted tooling.
- Ability to work independently and bring structure to ambiguous technical situations.
- Strong written and verbal English communication skills.
- Experience using AI-assisted coding tools (e.g., Cursor, GitHub Copilot, Gemini) for faster development and iteration

Nice to have:
- Hands-on experience with real-time audio/video systems such as LiveKit or similar platforms.
- Experience with avatar, video rendering, or real-time media processing pipelines.
- Experience with frameworks and tooling such as TanStack Start, Nitro, or Vite.
- Familiarity with vector databases or embedding-based retrieval (pgvector or similar).
- Familiarity with Python ML stacks such as PyTorch or CUDA-based GPU inference.
- Experience with voice AI pipelines involving services such as ElevenLabs or Deepgram.
- Experience with CI/CD pipelines such as Jenkins, GitHub Actions, or similar.
- Experience with Next.js and Nx monorepo environments.
- Experience with GraphQL / Apollo or similar API integration patterns.

What we value:
- Strong ownership and reliability, especially in production.
- Pragmatic engineering judgment: shipping something stable beats over-engineering.
- Comfort with production responsibility and debugging under pressure.
- Ability to move across backend, infrastructure, and frontend without losing clarity.
- Clear communication, honest estimation, and practical execution.
- Documentation discipline: if it is not written down, it does not exist.

What we offer:
- Real impact: your content will directly attract new clients.
- Mentorship and growth.
- Freedom to experiment and test new formats.
- Flexible schedule and a remote-first culture.

We are hiring a Senior Software Engineer (Full Stack) for a fast-growing wellness-tech company building a modern platform for the head care and hair treatment industry. The product combines professional diagnostic tools, standardized treatment protocols, and integrated e-commerce capabilities to help salons and wellness centers deliver personalized, data-driven experiences to their customers.

The platform serves as an end-to-end system for head spa providers, enabling them to analyze scalp conditions, manage treatment workflows, and seamlessly connect services with product sales. The system is already in use and continues to evolve as the company expands its footprint globally.

The product is built with a modern full stack architecture using React and NestJS, running on AWS infrastructure. It includes integrations with third-party platforms like Shopify and Zoho, supports real-time data processing, and relies on a combination of relational and NoSQL databases. The team is small, highly focused, and operates in a fast-paced remote environment.

In this role you will act as a key technical contributor and take ownership across the entire product lifecycle, from architectural decisions to production support. This is not just an execution role, but a position with real influence on technical direction and product quality.

Responsibilities

• Work across the full stack using React and NestJS to build and maintain product features

• Own features end-to-end from design and architecture through deployment and support

• Manage and improve AWS infrastructure, including IAM (Cognito) and cloud services

• Develop and maintain CI/CD pipelines using GitHub Actions

• Contribute to infrastructure as code using Terraform, CDK, or CloudFormation

• Research solutions, build PoCs, and drive technical decisions

• Ensure system reliability, scalability, and performance in production

• Provide L3/L4 support and resolve production issues when needed

• Collaborate closely with business stakeholders to translate requirements into technical solutions

Tech Stack

• Frontend: React, TypeScript, SCSS

• Backend: Node.js, NestJS, Python (plus)

• Databases: PostgreSQL, Redis, DynamoDB

• Cloud: AWS

• Infrastructure: Terraform, CDK, CloudFormation

• Search: Elasticsearch, Solr, or OpenSearch (plus)

• Mobile: Android (Kotlin is a plus)

• Integrations: Shopify, Zoho (Deluge scripting)

Requirements

• Strong experience in full stack development and system integration

• Solid understanding of HTTP, REST APIs, and networking fundamentals

• Proven experience working with AWS, Docker, and Linux environments

• Hands-on experience with CI/CD pipelines and infrastructure as code

• Advanced knowledge of git and version control workflows

• Experience working in fast-paced, remote environments

• Strong ownership mindset and ability to work independently

AI & Modern Engineering Expectations

Candidates are expected to actively use AI-powered development tools such as GitHub Copilot, Claude Code, or similar to accelerate development, improve code quality, and support refactoring and research workflows.

Nice to Have

• Experience with search technologies like Elasticsearch or OpenSearch

• Experience with e-commerce or CRM integrations (Shopify, Zoho)

• Mobile development experience (Android, Kotlin)

• Experience working with Python in production environments

This is an opportunity to join an early-stage, privately funded company as a foundational engineer, with real ownership over the product and direct impact on its evolution. As the company grows, both scope and compensation will scale accordingly.

The role is fully remote and requires strong English communication skills.

Our client is an AdTech SaaS built on Shopify that helps e-commerce businesses run ads on Meta and Google. The product is evolving from a simple setup tool into a full AI-driven solution: it analyzes a store, identifies the best product opportunities, generates creatives, launches campaigns, and optimizes them automatically. The merchant sets a target ROAS — the system handles the rest.

They are looking for a Senior Engineer who can take real ownership of the product and help deliver the next stage of growth.

What you’ll own

In the first months, you’ll dive deep into the existing platform: stabilizing, maintaining, and building context. Then you’ll move into:

• AI-native experience: building store intelligence that analyzes merchant data, scores products by predicted ROAS, and drives campaign decisions automatically
• Deep Shopify integration: ensuring the product lives where merchants already work (Shopify admin, Sidekick, Flow), not as a separate tool
• Platform reliability & UX improvements: improving onboarding, ROAS optimization, and performance transparency

• Quality at every stage: owning QA as part of delivery — writing specs with acceptance criteria, critically reviewing AI-generated code, and ensuring features are tested before release

   

How the team works

The team follows an AI-assisted development approach:
spec → generate → review → refine → ship

You don’t need to write every line manually — but you do need to:

• write clear specs
• review code confidently
• maintain a high quality bar

You’ll work directly with the founders — no PM layer, no excessive processes.

This role is for you if:

• You have 5+ years of production experience with Python and React
• You have hands-on experience with AWS (EC2, RDS, S3, Lambda or similar)
• You’re comfortable owning the full stack (frontend, backend, infrastructure)
• You’ve worked with Shopify API, Meta Marketing API, or Google Ads API
• You’re used to being the primary engineer and making architectural decisions
• You can balance support and feature development
• You’ve used AI coding tools (Cursor, Claude Code, Copilot) and understand their strengths and limitations

• You treat QA as part of shipping (tests, code reviews, validation before release)

   

Nice to have

• Experience building or maintaining Shopify apps
• Familiarity with LLM APIs (OpenAI, Gemini)
• Background in AdTech or performance marketing

What our client offers

• Real equity — joining as a key engineer at a pivotal stage
• Ownership over architecture and decisions
• Fully remote, flexible schedule
• Competitive salary
• Paid vacation

Hi!
 

We are looking for a skilled and proactive Strong Middle Full-Stack Engineer (Node.js + React.js) to join our team and contribute to building modern, high-impact web platforms.

This is a proactive hiring role — we are building a strong pipeline of engineers to quickly engage in upcoming projects with European and UK-based clients across HealthTech and B2B (defense/procurement) domains. You will have the opportunity to contribute to product development from early stages and take ownership of features in fast-paced environments.
 

Required Skills & Experience

• 4+ years of commercial experience with Node.js and React.js
• Hands-on experience building RESTful APIs and SPA applications
• Strong understanding of JavaScript/TypeScript fundamentals
• Experience with relational and/or NoSQL databases (PostgreSQL or MongoDB)
• Experience working with third-party integrations and external APIs
• Understanding of clean code principles and best practices
• Basic knowledge of application security
• Experience using AI tools (e.g., Claude or similar) in daily work
• Upper - Intermediate English level (B2) of higher for async communication
   

Nice to Have

• Experience in healthtech or defense/procurement domains
• Experience working with healthcare APIs or government data sources
• Strong TypeScript proficiency
• Experience with mobile-first responsive design
   

Key Responsibilities

• Design and develop frontend components and backend services
• Build and maintain RESTful APIs
• Integrate third-party services and external systems
• Participate in requirements clarification and technical planning
• Ensure code quality through reviews and testing
• Support staging and production deployments
• Collaborate closely with PM, BA, QA, and client stakeholders
• Take ownership of tasks and contribute to overall product delivery

Hiring Process

• Recruiter interview
• Technical interview
• Final interview with PM / Lead
   

What We Offer

• Exciting and impactful projects that make a difference
• Long-term cooperation with full-time involvement
• Flexible working schedule and remote work options
• Personalized professional development and growth plans
• Stable salary with regular performance reviews
• Paid vacation (21 days) and sick leave (10 days)
• Team-building activities, including corporate trips
• Access to professional workshops and training
• Development budget allocated for each employee
• Supportive corporate culture and a team of dedicated professionals

Please note: We carefully review every application, but will respond only to candidates whose skills and experience best match the role requirements. Thank you for your understanding!

ORIL is looking for motivated and proactive Trainee Full Stack Developers to join a 2-month internship program.

We are opening a specialized internship program for motivated, early-career developers. This is a unique opportunity to bridge the gap between "pet projects" and commercial software development by building a PropTech product in a collaborative team environment, and potentially earn a full-time Junior offer.

If you are a proactive individual who is ready to commit to a structured learning path, work with AI tools, and want to kickstart your career in an IT company - we invite you to apply and take the first step toward joining the ORIL team!

What we expect from the candidate:

• Clear interest and readiness to develop as a Full Stack Developer
• Strong foundational knowledge of frontend development (HTML5, CSS3, JavaScript ES6+) and component-based architecture
• Practical experience with React or Node.js (can be through educational, pet-projects, or open-source contributions)
• Solid understanding of Front-end and Back-end fundamentals and modern web development principles
• Understanding of Back-end basics: APIs, client-server interaction, HTTP methods, and data flow
• Basic experience working with REST APIs and understanding of how to connect frontend with backend
• Have a link to a GitHub/GitLab portfolio with examples of code
• English level B1+ (Intermediate) or higher, with the ability to read technical documentation and participate in team discussions
• High motivation to learn, grow, and take ownership of learning tasks
• Ability to work with feedback, adapt quickly, and continuously improve

Nice to have:

• Completed specialized IT or software development courses
• Basic understanding of SQL/NoSQL databases

Responsibilities:

• Collaborate in a team of 2 to develop a shared PropTech MVP from scratch based on provided mockups.
• Gain domain-specific knowledge in PropTech and apply it to the product implementation.
• Propose and implement additional features, including at least one AI-related feature.
• Participate in weekly syncs, code reviews, and structured feedback sessions with mentors.
• Manage task distribution and project milestones independently within your team.
• Follow established development processes and apply coding standards used by the company.

We offer:

• 2-month internship with a clear opportunity to receive a full-time Junior offer based on performance.
• A structured learning path with mentor involvement.
• Flexible work schedule agreed individually with your mentor.
• Flexible work format: from our office in Lviv or fully remote.

• Hands-on experience with modern AI tools and their application in real-world coding

   

Application Process:

1. CV and LinkedIn profile review (including portfolio/projects)
2. Culture Index (CI) assessment & English check
3. Interview with the Recruiter
4. Technical interview (focused on fundamentals, logic, and a review of your projects)
    

If you are ready to challenge yourself in a professional environment and explore the future of AI-driven development, we’d love to meet you!
 

Please submit your application along with a link to your up-to-date GitHub profile.

Magnoli is an innovative system for dry-cleaning operators.

It covers everything from order entry to tracking production and employee performance.

The JavaScript developer will take ownership of the React/Node apps from scratch and build out a specific function, such as order entry, customer wardrobe app etc

The developer is expected to work on UI, database, and infrastructure tasks, vertically, to ensure the app advances weekly and has a clear production deliverable.

We work with LLM enabled development as a baseline but we expect every developer to review EVERY line of code they commit.

The project is just getting started and is backed by one of the biggest names in the U.S. dry-cleaning industry.

No legacy code

No bureaucracy

No long meetings

IDEAL CANDIDATE

MUST HAVE:

• 1 year+ production experience with React & Node;
• Experience connecting API and 3rd party libs;
• The ability to work independently and get things done;

• Commitment to deadlines and making things happen!

   

WOULD BE GREAT:

• Fine written English;
• Use Cursor/ Claude daily;

• Worked with SQL queues. 

   

WE'LL WORK GREAT IF YOU ARE:

• Attentive to details: pixel-perfect markup is a must on our projects. It's assumed you'll check your work before reporting it's done;
• Responsible and committed: you don't miss deadlines repeatedly. Just a grown-up communication about your availability is enough;
• Can work with limited documentation: projects are usually simple, and documentation is basic. We don't point fingers if smth is missed in docs and not done, though we expect you to have common sense.

No drama. Earn a good buck for a fair job.

WHAT'S IN IT FOR YOU: 

• Get in the successful startup early on to grow with it;
• Flexible working hours and exciting project that helps real businesses;
• We'll pay you to learn what is very appreciated on the market.

We use Cursor/Claude daily and expect you to be comfortable with it and willing to learn. 

APPLY ONLY IF YOU ARE READY FOR 1-2h TEST TASK.

QIT Software is seeking an experienced Full Stack Developer (Node/React) for live trading automation platform.

A trading automation platform that allows retail traders to manage and automate their trading activity between TradingView (charting platform) and their brokerage account. It integrates with third party trading APIs and handles real time data. Built on React (frontend) and Node.js (backend).

The platform is already built and live, we're not looking to rebuild anything. We need someone who can jump into an existing codebase, get up to speed quickly, and be a dependable long term partner.

Details:
- Client: UK.
- Project: Live Trading Automation Platform.
- Duration: long-term.
- Timezone: GMT.

Requirements:

• Proven experience with React and Node.js.
• Experience working with third party APIs (fintech or trading experience is a bonus).
• Strong communication we need someone responsive and transparent.
• Someone comfortable taking ownership of an existing codebase.
• Available for ongoing work, not just a one-off fix.

Responsibilities:

• Fix of any bugs.
• Ongoing maintenance and platform improvements.
• Add new features over time as the platform grows.
• Clear, prompt communication this is essential for us.
• Ability to integrate and manage API's with other trading platforms.

Work conditions:

• The ability to work remotely from anywhere in the world.
• Flexible work schedule, no micromanagement, no strict deadlines and free overtime work.
• Work in European and American products with a modern technology stack in different domains (Finance, Technology, Health, Construction, Media, AI, Blockchain, etc.).
• Revision of wages every year or on an individual basis.
• Accounting support.
• 100% compensation for remote English lessons.
• 15 paid leaves (PTO) and public holidays.

Hiring process:
1 - Pre-screen (up to 30 mins).

2 - Interview with the client.

3 - Test task.

The company shapes the future of autonomous AI agents for developers. Work with AI engineers to build tools that enhance coding workflows, automate tasks, and boost productivity.

Why join us?

Be a part of the next AI-powered development tools redefining software engineering. Collaborate with top-tier engineers and AI specialists. Solve complex challenges in a fast-paced, growing company. Enjoy a fun work environment and exciting opportunities as we rapidly expand. Gain exposure to cutting-edge tech while we expand weekly.

• Be a part of the next AI-powered development tools redefining software engineering.
• Collaborate with top-tier engineers and AI specialists.
• Solve complex challenges in a fast-paced, growing company.
• Enjoy a fun work environment and exciting opportunities as we rapidly expand.
• Gain exposure to cutting-edge tech while we expand weekly.

Responsibilities:

You’ll play a key role in designing and developing software, balancing backend and frontend development. Responsibilities include architecting scalable backend services, optimizing cloud-based solutions, and building interactive UI components and IDE plugins. Solve challenges like parsing large codebases, integrating AI assistants, and optimizing performance.

Requirements:

• 8+ years of full-stack engineering experience, with Strong backend and Strong frontend skills.
• Tech lead with at least 1 year of experience. 
• Experience with Redis and PostgreSQL
• Deep expertise in React, TypeScript, and modern Frontend and Backend architectures.
• Deep Experience with NodeJS
• Experience with AWS 
• Experience with AI-powered dev tools in day-to-day workflow.
• Experience working with CI/CD pipelines, automated testing, and modern development workflows.
• Experience with Infrastructure as Code (IAC) tools such as Terraform or Pulumi.
• Experience  in building interactive UI components and IDE plugins
• B2+ English Level 

Start your career building real-world fintech products across backend and frontend.

We’re building a next-generation, regulated crypto platform focused on fiat on/off-ramps and Spot trading. This is a production-grade system - not a prototype - designed for scalability, compliance, and long-term growth.

As a Junior Full-Stack Engineer, you’ll contribute to both backend services and frontend applications, gaining hands-on experience across the entire product.

Responsibilities: 

• Assist in building backend APIs using Node.js / TypeScript
• Help develop frontend features (web dashboard / user flows)
• Integrate frontend with backend services
• Work with APIs for trading, wallets, and user data
• Fix bugs and improve existing features
• Participate in code reviews and team discussions
• Write clean, maintainable, and well-structured code

Your Role:

As a Junior Full-Stack Engineer, you will:

• Work on both backend and frontend tasks
• Support implementation of core features (auth, dashboard, transactions)
• Collaborate with designers and senior developers
• Learn best practices in scalable system design
• Gradually take ownership of small features end-to-end

Tech Stack: 

• Backend: Node.js, TypeScript
• Frontend: React (Next.js is a plus)
• Database: PostgreSQL
• Other: REST APIs, Git, basic CI/CD

Requirements:

• 0–1.5 years of experience (or strong pet projects)
• Basic knowledge of JavaScript / TypeScript
• Understanding of both backend and frontend fundamentals
• Experience with React (or similar frontend framework)
• Familiarity with REST APIs
• Basic understanding of databases
• Git knowledge
• English level: B1+

Nice to Have:

• Experience building full-stack pet projects
• Familiarity with Next.js
• Basic understanding of authentication (JWT, sessions)
• Interest in crypto / fintech
• Experience with UI libraries (e.g., Tailwind, Material UI)

We Offer

• Mentorship from senior engineers (both FE & BE)
• Flexible work format (Office / Hybrid)
• 18+4 paid days off
• MacBook Pro + modern tools
• Learning budget (courses, AI, conferences)
• Clear growth path
• Real product experience with visible impact

Company
The company specializes in lead generation within the iGaming domain, primarily through SEO-driven solutions. They work on long-term client projects and are currently expanding their internal development team.

Position Overview

We are looking for a Lead / Senior Full-Stack Engineer who operates at a true senior / lead level — not by years of experience, but by depth of expertise and ownership.

This role is for someone who:

• takes full ownership of complex systems
• makes architectural decisions
• builds scalable solutions (not just features)
• sets and raises engineering standards within the team

Location & Format

• Remote
• EU time zone required
• Full-time, long-term cooperation

Language Requirements

• English — required for daily communication
• Strong English is a significant advantage

Team & Projects

You will join a stable team working on long-term lead generation platforms.

This is not a task-execution role. We expect you to:

• take ownership of complex technical decisions
• improve architecture and system performance
• raise the overall engineering bar within the team

Tech Stack

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

Key Requirements

WordPress (must-have, advanced level)

• Experience building complex, large-scale WordPress systems (not content websites)
• Hands-on experience with WordPress Multisite (production)
• Strong experience with custom plugin development, including:
  • OOP
  • Composer / autoloading
  • Typed properties
• Experience with:
  • custom database structures
  • custom caching strategies (not plugin-based)
  • advanced use of WP_Query
  • improving developer & admin tooling

👉 If your experience is mostly theme customization or plugin usage — this role is not a fit.

PHP (strong senior level required)

• 5+ years with modern PHP (8+)
• Ability to design abstractions, libraries, and internal frameworks
• Experience with:
  • phpcs / phpcbf
  • custom sniffs OR PHPParser / AST
  • reflection & introspection
  • DTOs, Value Objects, clean architecture principles

Frontend / CSS

• Strong modern CSS skills (must-have)
• Understanding of browser rendering, layout, and performance

Performance & Optimization (critical)

• Deep understanding of Core Web Vitals
• Real experience with performance optimization (not just tools/plugins)
• Ability to identify bottlenecks and design custom solutions

Mindset & Approach

We are looking for engineers who:

• think analytically and architecturally
• deeply understand systems, not just tasks
• challenge “working solutions” and improve them
• proactively raise engineering standards

👉 If you mainly execute tasks and rely on predefined solutions — this role is not a fit.

AI Usage

• AI is allowed, but must not be a dependency
• Strong preference for engineers with deep system understanding
• AI-generated communication is discouraged

Start Date

• ASAP

We are looking for a Senior Fullstack JavaScript Engineer to join Quintagroup and work on a long-term US-based product in the marketplace analytics domain.

The platform helps analyze marketplace data, track sales trends, and support data-driven product decisions. In this role, you will contribute to building and improving a modern fullstack application together with a senior US-based engineer in a highly collaborative environment.

Responsibilities
 

• Develop and enhance a fullstack application using React, Next.js, and Node.js
• Work closely with a senior engineer on product architecture and implementation
• Collaborate with BA, Data Engineers, DevOps, PM, and Architect
• Participate in planning, technical discussions, and delivery processes
• Integrate application logic with data pipelines and analytics-related components
• Ensure high performance, scalability, and reliability of the solution
• Contribute to technical decisions and engineering best practices

Tech Stack
React, Next.js, Node.js, TypeScript, REST APIs, AWS, Docker

Requirements
 

• 5+ years of commercial experience with React and TypeScript
• Strong hands-on experience with Next.js
• 1+ years of commercial experience with Node.js
• Solid understanding of fullstack application architecture
• Experience working with REST APIs
• Experience with cloud environments; AWS would be a strong plus
• Understanding of data-heavy or analytics-oriented systems will be an advantage
• Experience working in distributed teams
• Strong English communication skills, B2+ or higher

We Offer
 

• Flexible working format: fully remote, hybrid, or office-based in Lviv
• Supportive and friendly team environment
• Long-term stable collaboration with an established US client
• Online English classes
• Private healthcare package
• Access to learning and professional development opportunities
• Team-building activities and company perks
• IT Club Loyalty membership

Fast growing start up in healthcare domen. 

Platform is a multi-tenant SaaS product used by care organizations to manage visits, staff, finances,

 incidents, and care planning — all in one place.

Application is a cloud-native microservices platform powering the full lifecycle of domiciliary care: from scheduling carers and tracking visits with GPS check-in/check-out, to generating invoices, managing HR

 records, logging safeguarding incidents, and creating AI-powered care plans. The platform serves web and mobile users with real-time capabilities including video calls, push notifications, and offline-first

 mobile access.

What We're Looking For

Must-Have Skills

- AI integration — hands-on experience

- Java 21 + Spring Boot 3.x (microservices, REST APIs, JPA/Hibernate)

 - React + TypeScript (hooks, state management, component architecture)-very bg plus

  - Experience with event-driven architectures (messaging queues/topics)

  - Familiarity with OpenAPI/Swagger and code generation workflows

Tech Stack:

Backend (Java Microservices)

- Java 21 + Spring Boot 3.3.4

- Database: PostgreSQL 16+ with Flyway migrations, Row-Level Security for multi-tenancy

- Messaging: Azure Service Bus (topic/queue-based event-driven architecture)

- Patterns: OpenAPI-first contracts, BFF gateway layer, event-driven inter-service communication, Specification pattern for dynamic queries

Frontend

- React 19 + TypeScript 5.8 + Vite 7

- UI: Tailwind CSS v4 + shadcn/ui (Radix primitives, new-york theme)

Senior Full-Stack Engineer with a strong backend focus to work on a large-scale web platform used by a significant number of customers. The system includes a site-building tool enhanced with AI features, a client-facing dashboard, and internal tooling for support operations.

About the role

The majority of your work will be focused on backend development using Node.js and TypeScript. From time to time, you’ll also contribute to frontend tasks built with React, though this represents a smaller portion of the workload.

Infrastructure and production environments are handled by a dedicated DevOps team. While you might occasionally experiment locally or in isolated environments, you won’t be responsible for managing production systems.

AI functionality is already integrated into the product via third-party services. You’ll be working with external APIs rather than building machine learning models from scratch.

Responsibilities

• Build and maintain backend services end-to-end
• Support frontend development when required for feature delivery
• Release features and ensure their stability after deployment
• Work closely with Product, Platform, and reliability teams
• Suggest and drive technical improvements alongside existing architectural guidance

Tech stack

Node.js, TypeScript, React, Redis, MySQL, PostgreSQL, Elasticsearch, messaging systems (Kafka or RabbitMQ), monitoring tools

Requirements

• Solid commercial experience with Node.js and TypeScript
• Practical understanding of React and modern frontend development
• Strong knowledge of databases and caching strategies
• Ability to troubleshoot issues across distributed systems
• Ownership mindset — comfortable delivering features from idea to production
• English for daily written communication and regular team syncs

Nice to have

• Experience with microservices and API design
• Familiarity with Docker and Kubernetes
• Performance optimization skills
• Basic understanding of Linux and networking
• Knowledge of clean architecture principles and testing practices

What’s offered

• Fully remote setup with flexible working hours
• Paid time off
• Compensation reviews twice a year
• Contractor engagement with accounting support
• Opportunity to contribute to a high-scale product and influence technical decisions

Your Role

As a full-stack developer, you will be responsible for the holistic development and implementation of modern software solutions- from architecture and deployment to operation. You will work closely with the product team to design and continuously improve high-performance, scalable, and maintainable systems. You will primarily contribute your expertise to backend development (70%), while also contributing to frontend development (30%) and actively promoting the team’s technical excellence.

Your tasks

• You have end-to-end responsibility for software solutions, from conception and architecture to development, testing, deployment, and commissioning.
• You design and develop modern software architectures with a focus on scalability, maintainability, and performance.
• You develop robust backends based on Laravel (PHP) and ensure a clean, efficient code base.
• You build modern, reactive front ends with Vue 3 that combine UX and technical excellence.
• You set up CI/CD pipelines (e.g., with GitHub Actions), containerize applications with Docker, and are responsible for efficient database design (MySQL, PostgreSQL).
• You ensure that code quality, architectural principles, and best practices are implemented in the project.
• Topics such as data processing, automation, and AI integration (e.g., Python-based services) are exciting fields for you, in which you would like to familiarize yourself or contribute your existing knowledge.
• You work in cross-functional teams on MVPs and iterative product development.

Your Profile

• You have a technical background and at least 5 years of practical experience as a developer, ideally in the service provider environment.
• You have excellent knowledge of Laravel, are confident in using Vue 3, CSS, have in-depth knowledge of MySQL or PostgreSQL, and have experience with Docker.
  Basic knowledge of PrimeVue and Figma is a plus.
• You have experience in setting up CI/CD pipelines, ideally via GitHub Actions. Knowledge of Kubernetes and Infrastructure as Code (IaC), as well as applications in cloud environments such as Azure or DigitalOcean, is a plus.
• You have a solid understanding of software architecture principles and their practical application.
• You are enthusiastic about data, AI, and new technologies—you like to experiment, try things out, and bring innovative ideas to the team.
• Personally, you are characterized by solution-oriented and structured thinking, initiative, a sense of responsibility, and a passion for clean, maintainable code.
• You are a team player who communicates proactively (in English) and enjoys collaborating on interdisciplinary projects.

What we offer:

— Interesting and challenging work in an international developing company;

— Competitive remuneration based on € and annual review (based on performance);

— 24 vacation days and paid public holidays;

— 100% Paid sick leaves;

— Work remotely or in a hybrid model, based on your choice.

On behalf of our Client from Israel, Mobilunity is looking for a Senior Full-Stack Engineer on full-time engagement.

Our Client is developing a SaaS platform that evaluates how brands perform across LLMs and provides actionable insights to improve visibility and performance.

The system includes:
A user-facing SaaS platform (customer dashboard, insights, reporting) A data processing backend that interacts with multiple LLMs to generate analysis

Currently:
- Platform is live with ~20 paying customers
- Initial MVP was built quickly using a “vibe coding” approach → now undergoing restructuring and productionization
- Moving toward a more scalable, clean architecture with APIs and separated systems
- Future plans include expanding into automated implementation of recommendations

About the Team:

Looking for experienced proactive person who can take on tech leadership from current R&D developer and tackle next challenges:

• Existing codebase is messy and requires refactoring/re-architecture.
• Need to stabilize and scale a working but early-stage system.
• Managing two separate systems (frontend app + LLM data engine).
• Increasing need for complex integrations (LLMs, analytics tools, CRMs, enterprise systems).
• Lack of strong internal technical leadership to define roadmap and best practices.

Key Responsibilities:

• Own and improve overall system architecture (frontend, backend, data/LLM systems).
• Refactor and scale existing MVP into production-grade system.
• Hands-on full-stack development.
• Lead LLM integrations (APIs, prompting, orchestration).
• Build and maintain integrations (payment, CRM, analytics, erp, custom APIs).
• Work closely with founders on product and technical roadmap.
• Participate in hiring and mentoring future engineers.

Required Skills and Experience:

• 5+ years in full-stack development building and scaling SaaS products.
• Background in early-stage/startup environments refactoring or rebuilding MVP systems.
• Background working with data/AI-driven products.
• Strong full-stack skills (React/Vue + Node.js/Python or similar).
• Solid understanding of system architecture and scalability.
• Experience with API design and system integrations.
• Hands-on experience with LLM/AI integrations: OpenAI, Gemini, or similar APIs. Prompting and workflow design.

Nice-to-Have skills:

• Experience with domains related to SEO / eCommerce / marketing tech.
• Experience with enterprise integrations (Salesforce, ERP, etc.).
• Experience connecting 3d-party APIs & tools.

In return we offer:

• The friendliest community of like-minded IT-people
• Open knowledge-sharing environment – exclusive access to a rich pool of colleagues willing to share their endless insights into the broadest variety of modern technologies
• Mobilunity Medical Insurance program designed to attend our teams’ needs
• Paid vacations and sick leaves, including 5 paid days per year that don’t require a sick note
• Perfect office location in the city-center (900m from Lukyanivska metro station with a green and spacious neighborhood) or remote mode engagement: you can choose a convenient one for you, with a possibility to fit together both
• No open-spaces setup – separate rooms for every team’s comfort and multiple lounge and gaming zones
• English classes in 1-to-1 & group modes with elements of gamification
• Neverending fun: sports events, tournaments, music band, multiple affinity groups