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Mid-Level Fullstack Engineer (Node&React) at OAK'S LAB. Remote Location: Serbia. * This position is open to engineers based in Serbia. * The position is for a B2B/freelancing cooperation and it is a long-term contract engagement. ABOUT US. We are a leading product development partner specializing in custom web and mobile application development. With Silicon Valley founders and top-tier European tech talent, we operate from Prague and have successfully delivered over 65 software products for early-stage startups, scaleups, and global enterprises.. Founded in 2016. Headquartered in Prague. Built and launched 65+ products. 85+ team members. Driving product innovation for leading US companies. At OAK’S LAB, we take an AI-first approach, utilizing AI on almost every project. From streamlining design and testing workflows to enhancing developer productivity, our teams leverage tools such as Figma MCP Server, Playwright MCP Server, and Cursor, and we’re actively experimenting with remote AI agents to push the boundaries of what’s possible in product development.. OUR PROJECTS. Here are a few from our portfolio:. Nasdaq Private Market (Series C, Finance)- . nasdaqprivatemarket.com. Blackpoint Cyber (Series B, Cybersecurity) - . blackpointcyber.com. OpenLoop (Series A, Healthcare) - . openloophealth.com. THE ROLE. Our product development team is looking for a Fullstack Engineer who combines creative thinking, exceptional problem-solving skills, and technical expertise to build outstanding web and mobile applications for our clients.. You’ll play a key part in building and scaling impactful digital products from the ground up. You’ll work as part of a dedicated product team alongside a Tech Lead, Product Manager, Designer, and a talented group of engineers, driving the success of innovative companies. Your role will involve actively contributing to the software development process and engaging with the team and business. You’ll be participating in discussions, providing technical input, and ensuring the delivery of high-quality software solutions that meet user needs and project goals.. You’ll also have the opportunity to join our internal AI Guild, a community where engineers share insights, experiment with cutting-edge AI tools, and learn from one another.. RESPONSIBILITIES. Design, develop, and version high-quality web and mobile applications. Collaborate with product teams to understand feature requirements and translate them into technical solutions. Be accountable for an area of the application, its delivery, production-level quality, and its effective presentation to stakeholders. Understand the product and user needs to prioritize business value and functionality. Ensure the application meets all requirements of security and scalability. Write clean and scalable code. SKILLS & REQUIREMENTS. 3+ years of experience in building digital products using Node.js & React. Experienced with Javascript/Typescript. Proficient in English. Focus on code quality. Desire to learn new technologies and apply AI in your workflow. Strong analytical and problem-solving skills. Proactiveness and the capability to make a difference. Driven, hard work ethic, showing commitment. Ability to work effectively in a team environment, following Agile methodologies. Experience with Python is beneficial but not essential. OUR TECH STACK. Typescript. Node.js. React + Next.js. React Native. GraphQL, tRPC. Material UI. Playwright. PostgreSQL. Google Cloud Platform. Python. AI Tools: Figma MCP Server, Playwright MCP Server, Cursor, Remote Agents. Important Notice:. OAK'S LAB communication, including interview requests and job offers, are only sent from an ". @. oakslab.com. " . or ". @. oaks-lab.com. " email addresses (e.g., . [email protected]. or . [email protected]. ). Any message from a different email domain is not associated with OAK'S LAB. We will . never. ask for payment information or banking details via email, phone, or any other communication channel during the interview process. If you receive messages using our name, domain, or brand assets in an attempt to impersonate us or act on our behalf, do not engage. Instead, report it to . Econsumer.gov. at . Government Shutdown Notice / Aviso de cierre del gobierno. (if you are in the EU), Federal Trade Commission (FTC) at . Government Shutdown Notice / Aviso de cierre del gobierno. , or the Securities and Exchange Commission (SEC) in case of investment fraud at . SEC.gov. | Report Suspected Securities Fraud or Wrongdoing. (if you are in the US).