Jobs Fullstack

Simulmedia is seeking an experienced Senior Full Stack Engineer to strengthen our engineering team as we scale our platform and deliver new insights and analytics capabilities within our next-generation products.

A major focus of our technical roadmap is platform unification, which includes the exciting challenge of rewriting our existing enterprise product into this modern, unified technology stack

In this role—which features a targeted 30/70 backend-to-frontend allocation—you will work closely with product managers, designers, and data engineers to ensure the seamless integration of analytics features into the platform. The ability to frequently iterate and deliver high-quality features that are owned end-to-end is crucial in this role.

Location: Ukraine is mandatory. Our offices are located in Kyiv and Lviv. Teams are located in Kyiv and Lviv and primarily work remotely with occasional offline meetings.

Key Responsibilities

• Design and implement insights and analytics dashboards for the CTV self-service platform, providing users with actionable data to enhance their campaigns.
• Develop both frontend (70%) and backend (30%) services using React, Next.js, and TypeScript, ensuring seamless integration between components.
• Build robust, scalable APIs using tRPC to serve analytics data to the frontend application.
• Create efficient pages using server-side rendering (SSR) or static site generation (SSG) via Next.js for performance-optimized analytics displays.
• Collaborate with designers to implement responsive and visually appealing user interfaces using Tailwind CSS, ensuring a smooth, intuitive experience for the platform’s users.
• Optimize the full stack to ensure quick load times, low-latency data fetching, and smooth user experiences, especially for data-heavy visualizations and analytics pages.
• Deploy and manage the platform using Vercel, taking advantage of its serverless functions for backend processes and ensuring efficient deployments and scaling.
• Participate in code reviews, pair programming, and knowledge-sharing sessions to ensure high-quality, maintainable code.
• Implement unit and end-to-end testing for both frontend and backend components to ensure reliability and reduce bugs in production.

Qualifications

• Education: Bachelor’s degree in Computer Science, Computer Engineering, or a related technical field.
• Experience: 6+ years of senior-level experience in full stack development, with a strong focus on web applications and data-driven platforms.
• Core Languages: Strong proficiency in TypeScript, including strong typing and interface design for scalable codebases.
• Frontend Expertise: Deep understanding of React and its ecosystem, including hooks, functional components, and React Server Components (RSC). Proficiency in Tailwind CSS for building responsive, accessible, and aesthetically pleasing UIs.
• Data Visualization: Experience in building data visualization tools and dashboards using React-based libraries (e.g., D3.js, Chart.js).
• Rendering: Experience with SSR and SSG using Next.js, optimizing for performance and SEO.
• Backend Expertise: Proficiency in backend development (e.g., Node.js) with tRPC as an API framework. Experience designing and developing APIs, handling authentication, authorization, and security best practices.
• Data Architecture: Proficiency in building scalable and reliable data-fetching layers, especially for real-time or large-scale analytics.
• Infrastructure: Experience with serverless architectures, understanding of edge computing, and CDN usage for enhancing performance and reliability. Solid experience with Vercel or other serverless platforms for deployment, CI/CD pipelines, and performance monitoring.
• Testing: Experience with unit and end-to-end testing frameworks such as Vitest, Cypress/Playwright, or similar.
• Version Control: Proficiency in Git, including experience with pull requests, code reviews, and branching strategies.
• Soft Skills: Ability to work independently and collaboratively in a team environment. Strong communication and interpersonal skills.
• Timezone: Ability to communicate effectively with the U.S.-based teams and work 11:00 AM — 8:00 PM EEST.

Bonus Points For

• Familiarity with CTV platforms or working experience in digital advertising or media analytics.
• Knowledge of SEO, accessibility, and performance optimization for web applications.

Interview Process

1. Technical Pre-screening: (30 mins)
2. Full-scale Technical Interview: (1h 15m)
3. Product Interview: (30 mins)
4. Offer.

We are looking for a Middle AI-Enabled Full-Stack Developer to join our team and work on our flagship products.

Our client is one of the fastest-growing web hosting companies, with team members and customers in 39 countries worldwide.
 

12.30 — 21.00 by Kyiv time, or 15.30 — 00.00 by Kyiv time
 

Responsibilities

• Develop full-stack features across frontend and backend
• Build and maintain scalable architectures
• Implement AI-driven workflows using LLM APIs and prompt engineering
• Use AI coding assistants (e.g., Gemini, Claude) and review generated code for quality
• Participate in code reviews and maintain high engineering standards
• Optimize performance, security, and reliability in production
• Collaborate with product, design, and engineering teams in a remote environment
   

Requirements

• 4+ years of commercial experience in full-stack development
• Strong communication skills and ability to work in remote teams
• Experience working with modern web architectures and scalable systems
• Interest in practical applications of AI in software development
   

Frontend Requirements

• Solid proficiency in TypeScript and modern JavaScript (ES2020+), alongside semantic HTML5 and CSS3 with accessibility best practices
• Deep experience with React 18+ (hooks, performance optimization) and React Router
• Experience with Next.js 14+ and modern React patterns (App Router, Server Components) is a strong plus
• State management (MobX, Zustand, or similar) and form handling (Formik + Yup or equivalent)
• Proficiency in CSS methodologies (SCSS/Sass, BEM, Tailwind, or shadcn/ui)
• Experience with REST API integration, client-side storage, and internationalization (i18next)
• Testing with Jest, React Testing Library, and/or Cypress for E2E
   

Backend Requirements

• Strong proficiency in at least one of: PHP 8.2+ with Symfony 7.x (PSR standards) or Node.js with modern frameworks
• Experience designing RESTful APIs using patterns such as DTO, Repository, and Factory with Dependency Injection
• Solid experience with Postgres and/or MySQL, ORMs (Doctrine DBAL/ORM or equivalent), and caching (Redis)
• Expertise in authentication and security mechanisms including JWT, MFA/2FA, and session management
• CI/CD automation and infrastructure awareness (edge functions, Supabase, or similar platforms)
• Writing automated tests (PHPUnit, Codeception, or equivalent backend testing frameworks)
   

AI & LLM Skills

• Experience integrating and evaluating AI/LLM APIs for prompt engineering and conversation management
• Proficiency using AI coding assistants to accelerate development while maintaining quality
• Ability to review and validate AI-generated code for correctness, security, and architectural fit

We're building a privacy-first AI platform for teams working with sensitive documents. We're looking for a contract developer to help ship features and improve the product alongside our founding team.

You'll work across the stack. React frontend and Django backend,  building features, fixing bugs, and improving UX based on clear specs and designs. Our CTO reviews all PRs, so you'll get fast feedback and clear direction.

What you'll work on:

• Frontend components and pages (React, TypeScript, Tailwind)
• Backend API endpoints and integrations (Django, DRF)
• Bug fixes and UI/UX improvements
• CI/CD and testing improvements
• Performance optimisation
   

What we're NOT asking you to do:

• Make architectural decisions (our CTO owns that)
• Work on encryption or security-critical infrastructure
• Design the product from scratch
  
  This is execution-focused work with clear scope. We move fast and ship often.
• Stack: React, TypeScript, Tailwind, Django, Django REST Framework, AWS (S3, Lambda, EC2), Docker, Firebase Auth, Stripe

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:

This platform provides an AI-driven intelligence layer for real estate underwriting, focusing on short-term bridge financing. It ingests diverse public and user-submitted property data—ranging from financial documents and renovation plans to market listings—and applies OCR, classification, schema extraction, and large language models to deliver comparable asset analysis and risk scoring.

The system operates at scale, processing thousands of complex documents monthly with strict latency and accuracy requirements. Key challenges include normalizing unstructured inputs, aligning multiple data schemas, orchestrating agentic AI workflows, integrating multi-model LLM pipelines, and maintaining production reliability under third-party outages. Strong engineers are critical to own the full research-to-production lifecycle, optimize AI flows, and ensure measurable business impact.

About the Role:

As a Senior Full-Stack Research Engineer on our AI research team, you will drive end-to-end development from hypothesis and prototyping to production deployment. You will design, build, and optimize critical pipelines that extract, classify, and reason over complex financial and property documents using frameworks such as DSPy and LangGraph. You will implement and maintain FastAPI services and TypeScript integrations, ensuring system resilience, observability, and scalable data aggregation.

You will lead systematic evaluations of AI precision and recall, identify bottlenecks, and apply advanced techniques—like multi-step reasoning or custom chunking—to boost performance. This role demands ownership, rapid iteration from Jupyter notebooks to containerized services, and close collaboration on architecture to define a research-to-release playbook for next-generation initiatives.

Key Responsibilities:

• Optimize AI flow pipelines (OCR → classify → extract) using LangGraph and DSPy to reduce error rates and latency on financial and property documents.
• Orchestrate fault-tolerant, agentic workflows that connect document classification, OCR, and schema extraction modules into cohesive state machines.
• Conduct gap analyses with custom evaluation suites, measure precision and recall, and implement prompt/evaluation loop improvements and multi-step reasoning strategies.
• Prototype LLM-based models in Jupyter Notebooks and productionize them via FastAPI endpoints and TypeScript client integrations.
• Build and scale data aggregation systems, normalize heterogeneous schemas, and resolve conflicts across external real estate datasets.
• Implement robust caching, retry logic, and observability (tracing, structured logging) to maintain resilience against service outages.
• Translate research prototypes into tested, containerized services and integrate them into CI/CD pipelines.
• Collaborate on defining the architecture and establish a standard research-to-release playbook for upcoming AI initiatives.

Required Competence and Skills:

• 5+ years as a backend developer, with recent experience driving end-to-end AI research and applying LLMs for verification (prompt/evaluation loops) and broader problem solving.
• Experience working on AI-centric products, contributing to both backend development and the integration of AI as a core component of the system.
• Proficiency in Python or Node.js.
• Understanding of LLM orchestration tools (e.g., LangGraph), prompt optimization frameworks (e.g., DSPy), vector retrieval systems (e.g., Weaviate, Elasticsearch), and multi-model integrations (OpenAI, Gemini, vLLM).
• Strong skills in Docker, container orchestration, message queues, CI/CD, and observability practices.
• Demonstrated ability to design complex data schemas and perform multi-source data fusion.
• Comfortable using Jupyter Notebooks for rapid experimentation, benchmarking, and metric-driven prototyping.
• Experience with document pipelines, including OCR, parsing, classification, and handling noisy real-world inputs.

Nice to Have:

• TypeScript in strict mode with Zod schema validation.
• Graph database modeling experience with Neo4j.

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.

Chalice LTD is expanding its team and is looking for a new Senior Fullstack Developer with a passion for new technologies to join an exciting and growing project.

The project is fast-growing sport startup, focused on tennis and AI features to bring the most innovative and cutting age experience for their mobile app users in order to improve the game to the next level. 

Responsibilities

AI & Product

• Build AI Agents that help users create risk-controls, data analytics, and automated reports.
• Apply context engineering, tool use, and evaluations with multiple frontier LLMs.
• Implement AI-powered features on the frontend and integrate them into user-facing workflows.

Frontend

• Extend the frontend application with new pages, components, and features using HTML, CSS, TypeScript, and Angular/React.
• Implement responsive, accessible UI following clean code and SOLID principles.

Backend

• Extend backend services and data models based on Java and Spring Boot.
• Follow Domain-Driven Design (DDD) for application architecture and Test-Driven Development (TDD) for feature implementation.

Infrastructure & Architecture

• Deploy applications to Kubernetes (AKS) using Helm and Flux-v2.
• Manage cloud infrastructure in Azure using Pulumi.
• Contribute to and challenge architecture decisions; document rationale using Arc42 and C4 models.

Must-haves

• 7+ years of hands-on frontend development experience using Angular or React, TailwindCSS, and TypeScript.
• 5+ years of backend development experience with Java, Spring Boot, and PostgreSQL.
• Solid understanding of Kubernetes (AKS), Azure, and Pulumi.
• TDD, SOLID, Clean Code, CI/CD, Arc42, DDD, and C4 are part of your daily routine — not just buzzwords.
• Strong communication skills in English (German is a plus).
• Hands-on AI experience is a must — you've worked with LLMs, agents, or AI-powered features in production.

Nice-to-haves

• Experience working in an early-stage startup environment.
• Familiarity with compliance, risk management, or RegTech domains.
• Experience with additional frontier AI tools, prompt engineering, or LLM evaluation frameworks.
• German language proficiency.

Benefits

• A steep learning curve and a structured development path — whether you want to grow into a leadership role or stay on the individual contributor track.
• Direct collaboration with founders and stakeholders; your decisions will shape the product.
• Competitive compensation.
• Work with cutting-edge AI technology and tools that are genuinely novel in the industry.

We are currently looking for a Senior Full Stack Engineer to join our team and work on a long-term project for one of our key clients — a global leader in networking technologies, hardware (routers, switches), and cybersecurity software.

In this role, you will be fully dedicated to the client’s project, working closely with their engineering teams and stakeholders.

This is a full-time, fully remote position.

Responsibilities:

• Design, develop, and maintain scalable web applications using Django and React
• Collaborate directly with the client’s engineering and product teams
• Contribute to system architecture and technical decision-making
• Ensure high code quality through best engineering practices, testing, and code reviews
• Participate in regular syncs and discussions with the client

Requirements:

• 8+ years of experience as a Full Stack Engineer
• Strong experience with Django
• Solid knowledge of React and modern frontend development
• Proven experience building full-stack applications
• Good understanding of REST APIs and system design
• Ability to work independently in a remote, distributed team
• Strong spoken English (daily communication with the client)

Nice to have:

• Experience with cloud platforms (AWS, Azure, or GCP)
• Familiarity with CI/CD and DevOps practices
• Background in networking or cybersecurity

We’re seeking a super-experienced Senior Fullstack Developer with deep expertise in JavaScript/TypeScript, particularly in Node.js, React, and Supabase, combined with practical experience in AI prompt engineering. You’ll architect, build, and optimize scalable applications that seamlessly integrate AI-assisted functionalities and modern cloud backends.

Requirements

Position name: Senior FS Developer (with AI agents experience)
Level: Senior

Hard skills:

• 8+ years of experience building fullstack web applications.
• Advanced proficiency in JavaScript/TypeScript, Node.js, React, and Supabase.
• Practical hands-on experience with AI prompt engineering, leveraging ArgumentCode, Cursor, or equivalent developer-AI tools.
• Experience with Figma MCP integrations to pull designs directly from Figma files
• Deep understanding of RESTful and GraphQL APIs, modern web performance, and security.
• Advanced experience with SQL databases, especially PostgreSQL
• Solid understanding of LLM context design, tool integration, and code-generation workflows.
• Experience with Docker, GitHub Actions, and cloud deployments (Vercel, AWS, or similar).

Nice-to-Have:

• Familiarity with Next.js, tRPC, or Edge functions.
• Exposure to RAG systems, vector databases, or LangChain/OpenDevin-style orchestration.

Responsibilities:

• Design and develop full-stack applications using Node.js (backend), React (frontend), and Supabase (database/auth/storage).
• Build scalable APIs and event-driven systems.
• Integrate and optimize AI/LLM workflows (e.g., OpenAI, Anthropic, or local models) through prompt design, argument-code, or Cursor-based pipelines.
• Collaborate closely with product and design teams to turn ideas into high-quality software.
• Write clean, maintainable, and testable code following best practices (CI/CD, unit/integration tests, performance monitoring).
• Review code, mentor team members, and participate in architecture discussions.

Office/Remote: Remote
English: Upper (must have)
Time zone: PDT

We are looking for a skilled and driven Senior Full Stack Software Engineer to join our growing team. 

In this role, you’ll join a team of engineers ranging from junior to senior, a group of experienced hands-on engineering managers, and a range of other team members all focused on one thing - providing a world-class educational experience to students from all walks of life.

 Responsibilities:

• Design, develop, and maintain scalable and reliable web applications using C# and Vue.js
• Collaborate with product and engineering managers, stakeholders, and other teams to scope, prioritize, and deliver value adding features to our consumers
• Write clean and testable code
• Lead and mentor more junior developers in code quality, clean architecture, and best practices

You may be a good fit if you have (requirements):

• 6+ years of professional software development experience
• Proficient (2+ years experience) in each of the following, with senior-level expertise in at least one:
  • Modern C#/.NET
  • Vue.js (or similar reactive frameworks, e.g. React, Angular)
  • CSS and modern front-end styling practices
  • Database technologies
• Experience leading complex engineering initiative design and execution
• Strong clean coding experience (maintainability, flexibility, extensibility, reliability)
• Strong communication skills and experience giving and receiving code reviews
• Experience with version control systems
• Experience mentoring other developers, formally or informally

What Makes You Stand Out (nice-to-haves)

• University degree in Software Engineering or related field
• Experience with GCP, GKE, GCS (or similar cloud technologies)
• Experience with PostgreSQL
• Familiarity with DevOps (CI/CD pipelines, K8s, Helm, Argo CD, Terraform)
• Experience with Application Security, SecOps, Cloud Security, or similar
• Experience with migration patterns (strangler-fig, dual-write, CDC, etc)
• Experience with rollout strategies (blue-green, canary, phased)
  
   

Qualities that will make you successful:

• Strong interpersonal and communication skills;
• Ability to work collaboratively in a remote environment;
• Growth mindset and motivated by constructive feedback;
• Proven ability to work independently, manage schedules, and meet deadlines;
• Passion for education and building solutions that support students and educators.

Our client is a global integrated Shipping Services company, recognized for its independent and innovative approach. As a niche carrier, they operate select trades where they provide superior service, ensuring stability, reliability, and flexibility for their customers worldwide. By maintaining strategic partnerships with major carriers and offering alternative line structures, they stand out in a market dominated by alliances.
We are seeking a Senior Java Full Stack Engineer to join our dynamic development team. This is a hands-on role involving the full development cycle—from design and architecture to development and deployment—with a focus on innovative applications. You will work in an XP environment, collaborating remotely with pairing practices to deliver high-quality solutions.

Responsibilities:

• Full stack development of innovative applications using Java, Spring, and React.
• Own the entire development lifecycle, including design, architecture, development, and DevOps.
• Work in an XP environment with remote pairing.
• Develop reactive UIs and modern front-end experiences.
• Implement and maintain microservices-based architectures.
• Contribute to TDD/BDD development using frameworks such as JUnit, Jasmine, Mockito, Protractor/Selenium.
• Deploy and manage cloud/hybrid solutions and containerized applications (Kubernetes, Cloud Foundry).
• Apply design principles like service discovery, circuit breakers, and scalable microservices.
• Switch effectively between different technologies and tasks in a fast-paced environment.

Requirements:

• BS degree in Computer Science or equivalent experience.
• 5–6+ years of full stack development experience.
• 5–6+ years of Java and Spring development; experience with Kotlin is an advantage.
• 2+ years of front-end development with React (or other modern JS frameworks).
• Experience with functional programming and Java Streams.
• 2+ years of experience in TDD/BDD using JUnit, Jasmine, Mockito, Protractor/Selenium.
• 2+ years of experience with microservices, Spring Boot/Cloud, and DevOps practices including Jenkins.
• Experience designing, developing, and deploying cloud/hybrid-based solutions.
• Experience with container-based environments (Kubernetes, Cloud Foundry).
• Familiarity with modern design patterns and architecture principles: microservices, service discovery, circuit breaker.
• Strong problem-solving skills, critical thinking, and ability to assess a broad range of information solutions.
• Excellent English communication skills (verbal and written).

Nice-to-Have:

• Experience in Kotlin development.
• Experience in developing reactive UIs (Reactive JS).

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

The family-style company is looking for a talented .NET Developer to join our team. If you are looking for an awesome team, send us your CV!

The Project

You will join a project for a large, well-known company in the insurance sector, working on a B2B corporate SaaS solution. The platform serves a wide user base and is deployed on Kubernetes in Azure.

Your primary focus will be on application development: building new features, improving existing functionality, and contributing to the evolution of a scalable product.

Tech Stack:

• Backend: C#, ASP.NET Core
• Frontend: Angular
• Database: PostgreSQL
• Infrastructure: Kubernetes, Microsoft Azure

• Other: REST APIs, SaaS architecture

   

Nice to have:

• Rust

• Experience with geospatial data and related libraries

   

What You'll Do

• Develop and maintain full-stack features using ASP.NET Core, Angular, and PostgreSQL
• Extend and improve the SaaS platform based on the product backlog
• Collaborate closely with the team and client in English
• Take ownership of tasks and contribute to technical decisions

• Share ideas and continuously improve both the product and development process

   

What We're Looking For

• Experience with (or strong willingness to learn) ASP.NET Core, Angular, C#, and PostgreSQL
• Understanding of modern web application development practices
• Proactive mindset - curiosity, ownership, and eagerness to learn
• Ability to work independently while being a strong team player
• Good communication skills in English (day-to-day project language)

What we offer

• Sane and polite, but effective management
• The best corporate culture (according to our teammates' opinions)
• Competitive salary and other stuff
• Remote work, full time

• Becoming not just another developer, but a part of UKAD with unique value and long-term relationships.

   

Some facts about UKAD to help you make a decision:

During 2022-2025, we only increased cooperation with our foreign partners

UKAD combines benefits of family-sized companies, like no bureaucracy, easy access to the executives, with sustainable growth and vast opportunities

Our company is strong enough to be not just a vendor but a tech partner. We can afford to choose customers that respect developers

UKAD is one of the leading employers in Kharkiv, according to DOU

We never hire people for projects, but to build the team, so if the project ends, you remain a part of UKAD.

Aren't we the company you're looking for?

We are a product-driven AdTech company working with search traffic and large-scale monetization systems.

We build and scale high-performance platforms for search traffic monetization, processing large volumes of data and developing our own tracking, analytics, and optimization infrastructure.

We are currently looking for a Senior Full-Stack Developer (AdTech) to strengthen our core team and help develop our platform.

Responsibilities:

• Develop and maintain high-load backend systems (click processing, redirects, tracking)
• Implement and optimize attribution systems (clickid, S2S postbacks, mapping)
• Work with real-time analytics and data (funnels, CR, RPM, revenue)
• Develop internal tools and admin panels (React)
• Integrate third-party services and partner systems
• Optimize system performance, stability, and scalability
• Participate in system architecture and technical decision-making

Requirements:

• 4+ years of commercial development experience (Senior level preferred)
• Strong knowledge of React, TypeScript, and Node.js
• Solid backend development experience (APIs, integrations, data processing)
• Understanding of click tracking, attribution, and S2S postbacks
• Experience with high-load systems and performance optimization
• Experience with databases (MySQL, Redis, MongoDB or similar)
• Experience working with REST APIs and WebSockets
• Understanding of AdTech / affiliate systems is a strong plus
• Experience with Git and Docker

Nice to have:

• Experience in AdTech / affiliate / traffic arbitrage / DSP / SSP
• Experience with real-time analytics and event-based systems
• Experience with queues (Kafka, RabbitMQ, etc.)
• Experience building low-latency, high-performance systems

What we offer:

• Work on a real AdTech product with direct traffic monetization
• Strong impact on architecture and key technical decisions
• High-load systems and real data scale
• Fast-paced environment with minimal bureaucracy
• Fully remote work
• Competitive compensation (discussed individually)

Are you looking for a rare opportunity to join a startup at a very early stage? This is it. You will be the first!

We are growing 2x month over month for the last 3 months.

We already have customers like: SoundHound, Glovo, and Ideals. And yes, we launched just 4 months ago.

You’ll have plenty to do. It will be hard and will require real dedication - but it will also give you: 
1/ Disproportionate outcomes in $ in the future
2/ Tremendous personal growth tomorrow
3/ Freedom and full responsibility now (I’m pretty sure these are the things you’re currently missing)

— What You’ll Do —

- Autonomously architect, prototype, & build the product from the ground up
- Develop integrations with AI (e.g. Perplexity, OpenAI) & 3rd party API (e.g. CRMs)
- Leverage your prompt engineering skills to maximize the outcome
- Horizontally work with founders in discussions on business & product topics

— What You'll Need —
- 1+ years of experience in a startup previously - the must 

- Authentic obsession with giving customers the best
- The best verbal communication skills (yes, better than the founder)
- RAG & AI agents development and prompt engineering
- API development and integration
- Database design and optimization (SQL)
- Development in cloud infrastructure (AWS/GCP/Azure)
- Patterns for asynchronous task processing (RabbitMQ, SQS, or similar)
- Experience with n8n will be a great plus

— What We Give For You —

- Founding member equity %% (equal to $50,000+ which will be $500,000 next year)
- Learning how a startup grows
- Direct impact on product and company strategy
- Deliver value directly to paying B2B clients
- Opportunity to build and lead a team and department
- The most modern toolset (yes, we use Cursor in Agent mode)
- Adding more perks (including a healthcare package) with the next round/revenue ramp-up
 

— About Execue in Action — 
You can see how one of the agents (outreach; we also have recruitment agent) works on this video: https://www.loom.com/share/abc9ed9e86d84e3cb15c4142550ccb01
 

We’re looking for a Full-Stack Developer who doesn’t just write code - but builds products, solves real problems, and takes ownership.

If you enjoy working across the stack, shipping features end-to-end, and seeing the direct impact of your work - this role is for 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 are seeking for a Senior Developer with deep expertise in AI, code, and scaling – and above all, the ability to lead bold technological processes and change the rules of the game.

If you live and breathe code, love automation, and get excited by the opportunity to write less and create more – this is your place.

1. We are looking for someone with Tech Lead experience- this is still a hands-on position.

2. Candidate must work with AI for a minimum of one year.

3. The profile here is a strong tech lead, who loves technology and exploring and learn new technologies by himself.

Responsibilities:

• Leading the transition from monolithic to microservices architecture
• Leading work with tools like GitHub Copilot and other LLMs as daily tools
• Accelerating development processes, automating tests, documenting and understanding complex code
• Defining new standards for high-volume development environments
• Technical leadership of a team – including training, mentoring, and hands-on implementation
• Implementing code solutions quickly and with high quality in critical systems environments
• Developing cloud systems

Requirements:

• 7+ years of backend development experience in C#/.NET, Node.js is an advantage
• 4+ years of experience in React.
• Great English communication skills.
• Proven experience in rapidly improving development speed and reducing bugs using AI-based tools
• Ability to lead end-to-end development processes including scaling, documentation, and automation
• System-level thinking, business orientation, and training skills Experience working with microservices architecture and building APIs
• B.Sc. in Computer Science or a similar technological field – required

Relevant Technologies:

• Backend: Node.js/C#/.NET Framework, ASP.NET Web API/Core, Entity Framework, Python
• Databases: SQL Server, MongoDB, Redis
• Messaging: RabbitMQ
• Frontend: Angular 5+, TypeScript, React
• Cloud & Containers: Azure / AWS, Kubernetes
• AI Tools: GitHub Copilot, Claude – proven experience required

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:

• Continue the evolution and scaling of our freshly released, native ChatGPT apps and custom MCP integrations.
• Develop and maintain high-traffic, public-facing interfaces hosted on AWS modern cloud infrastructure.
• Work heavily with AI agents (Claude Code, ChatGPT/Codex) to maintain and extend a codebase 
• Operate with full team autonomy, collaborating closely with the Engineering Manager in a "co-author" environment.
• Follow the "you-build-it-you-own-it" philosophy, taking full responsibility for the SDLC and production readiness.
• Explore and implement emerging AI frameworks and technologies to keep the product at the forefront of the GenAI market.

Requirements:

• 7+ years of experience developing reliable, highly available, and scalable software systems.
• Strong experience working with AI agents (Claude Code, ChatGPT/Codex) to maintain and extend a codebase
• Strong proficiency with backend development using Node.js / Java/ .Net and TypeScript.
• Deep experience with Model Context Protocols (MCP).
• Proven track record of using AI tooling (ChatGPT, Codex, Claude Code) for rapid operator-driven development.
• Hands-on experience with modern cloud infrastructures, specifically AWS, Terraform, and Docker.
• Strong proficiency with frontend development (HTML, CSS, JavaScript) and component-based SSR frameworks like Next.js or React.
• Experience with SQL and NoSQL datastores, as well as developing in service-based API environments.
• Strong understanding of software architecture, design patterns, and clean code principles.
• A modern, energetic mindset with critical thinking and systemic vision skills, the ability to work independently and take high-level ownership.
• Experience with formal CI/CD pipelines and monitoring services.
• Upper-intermediate English level.

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