New offer - be the first one to apply!

August 8, 2026

Fullstack Engineer

Mid • Remote

19,000 - 23,000 PLN

Warsaw, MZ, Poland

We are looking for a Fullstack Engineer to help evolve our runner engine into a powerful internal framework for browser automation, no-code testing, and agentic testing of web applications.

Our product is an end-to-end platform for no-code testing. Users can record workflows, replay them, validate business processes, and automate complex web applications without writing test code. We are also expanding into agentic testing, where AI-driven systems can explore, understand, and test web applications more autonomously. This role sits at the core of that platform. You will work on the browser automation engine that powers recording, replay, platform integrations, diagnostics, and future AI-assisted testing capabilities.

What You Will Do

  • Expand and evolve our current runner engine into an internal browser automation and testing framework
  • Build reusable TypeScript abstractions over Playwright, Puppeteer, Chrome DevTools Protocol, and browser APIs
  • Improve recording and replay of user actions across complex web applications
  • Develop platform-specific integrations for ERP, CRM, and enterprise systems
  • Support the evolution of our no-code testing platform and agentic web testing capabilities
  • Debug difficult browser automation problems involving timing, dynamic UI updates, frames, custom controls, and SPA behavior
  • Work with Chrome extension architecture where browser-level integration is required
  • Build tooling for diagnostics, traces, logs, screenshots, retries, and failure analysis
  • Use AI tools effectively as part of the engineering workflow to investigate code, debug behavior, and accelerate delivery
  • Write clean, maintainable, strongly typed TypeScript and Node.js code

What We Are Looking For

You should have strong TypeScript and Node.js experience, with a solid understanding of the modern JavaScript ecosystem. You should be comfortable building internal frameworks, not just using existing testing tools. We are looking for someone who understands how browser automation really works: how Playwright and Puppeteer interact with pages, how browser contexts and frames behave, how page lifecycle and DOM changes affect automation, and why real user input can behave differently from scripted interactions.

You do not need to know every browser internal detail, but you should be able to open DevTools, inspect an unfamiliar web application, understand what is happening, and turn that understanding into reliable framework code. Experience with Chrome extensions, Chrome DevTools Protocol, browser recording/replay systems, custom automation infrastructure, AI-assisted testing, or autonomous web agents is highly relevant. Fluent Polish is a must have.

Bonus Points

  • Understanding of Chromium internals is a strong plus, especially around rendering, processes, frames, input dispatch, site isolation, or browser debugging.
  • Experience with enterprise systems such as Microsoft Dynamics 365, Salesforce, SAP, Oracle, ServiceNow, or Business Central is also valuable.

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Krakow, Poland

16,500 - 23,500 PLN

🏢 Summary: The offer is for a Full Stack Engineer responsible for building and scaling production-grade applications and engineering tooling, combining Python backend and modern frontend development. The role focuses on creating robust APIs, orchestration layers, and harness frameworks for testing, automation, and workflow execution in complex AI-driven systems. It involves end-to-end feature delivery and improving system reliability, observability, and developer productivity in a remote B2B setup. 🗂️ Requirements: Strong experience building production systems with Python, Strong experience developing frontend applications with React or Angular, Experience building testing, validation, simulation, or automation tooling, Solid understanding of REST APIs and async service architectures, Experience with PostgreSQL or MySQL databases, Experience working with CI/CD pipelines and Git-based workflows, Ability to design scalable and reliable software systems 📃 Skills: Python, React, Angular, REST, PostgreSQL, MySQL, CI/CD, Git, Docker, APIs, Async, SQL 🏢 Description: Role Description We're looking for a Full Stack Engineer! Anitech Solutions Ltd is a dynamic IT services provider delivering innovative and unique AI technology solutions to businesses across multiple sectors. Alongside our core IT services, we are proud to offer tapybl, our flagship education-focused software product designed to enhance learning and engagement. We are looking for a highly capable Full Stack Engineer with a strong background in harness engineering. In this role, you will move fluidly between building user-facing features and creating the tooling, automation, and orchestration layers required to run complex systems reliably at scale. Responsibilities Build and maintain full stack applications using Python on the backend and React on the frontend. Design and implement APIs, services, and orchestration layers for product workflows and internal tools. Develop harnesses for testing, simulation, validation, execution, and monitoring of complex workflows, agents, or integrations. Create reusable frameworks for workflow execution, automated test runs, sandboxed environments, synthetic data generation, scenario replay, regression validation. Build developer-facing tools to improve engineering velocity, quality, and repeatability. Integrate external services, APIs, and third-party tools into internal platforms. Implement logging, tracing, observability, and error-handling across systems. Collaborate with product, design, and platform stakeholders to turn business needs into scalable technical solutions. Help define engineering standards for reliability, maintainability, and deployment readiness. Required Qualifications Strong hands-on experience building production systems with Python and modern frontend apps with React and/or Angular. Experience building tooling for testing, validation, simulation, automation, or execution environments. Solid understanding of software design, REST APIs, async service architectures, and databases (PostgreSQL/MySQL). Comfortable working across both application code and engineering infrastructure (CI/CD pipelines, Git-based workflows). Ability to move fast and make smart engineering tradeoffs in an autonomous environment. Preferred Qualifications Experience with workflow orchestration, event-driven architectures, or agent-based (AI/LLM) systems. Familiarity with Docker and cloud infrastructure. Background in building internal platforms, developer productivity tools, or QA frameworks. What Success Looks Like You can ship polished frontend and backend features end-to-end. You can build robust harnesses that make systems easier to test, measure, debug, and scale. You improve both product delivery and engineering leverage. You help the team move faster by making complex workflows repeatable and reliable. Working conditions Fully-remote based in Poland B2B