Senior Full-Stack Developer (Node.js + React)

Описание вакансии

Altamira is a software development outsourcing company. We provide solutions that make a tangible impact on our client’s growth and productivity. With domain knowledge across product and technology development, we aim to provide cost-efficient solutions without compromising quality. We are driven to deliver the best, every single time.

Altamira service delivery teams currently span Slovakia, Ukraine, and the Middle East, and we have ambitions to expand our footprint to meet the growing demand across Europe and into our primary growth markets in the UK and the US. In terms of industry verticals, we are focused on EdTech, Fintech, eCommerce, and Pharma.

We are looking for a Full-Stack Developer (Node.js + React) to join our team and work on a long-term project for an international client. This is an outstaffing engagement, meaning you will be fully integrated into the client’s team and collaborate closely with their engineers, product managers, and stakeholders.

Project

You will join an existing product with an established codebase and an active development roadmap. The project focuses on building and maintaining scalable back-end services and complex front-end applications. You will work with modern JavaScript and TypeScript technologies while also maintaining and extending parts of a legacy system. The role requires a high level of autonomy, ownership, and the ability to work effectively in a distributed team.

Requirements

Back-end (Node.js, with PHP/Laravel exposure)

• Deep, hands-on experience with Node.js in production environments
• Strong knowledge of TypeScript and modern JavaScript
• Experience designing and implementing RESTful APIs
• Understanding of backend architecture patterns (layered architecture, modular design, separation of concerns)
• Solid understanding of asynchronous programming, the event loop, and performance considerations in Node.js
• Experience working with SQL databases, including query optimization, transactions, and migrations
• Knowledge of authentication and authorization mechanisms (JWT, OAuth, role-based access)
• Experience with error handling, logging, and monitoring in back-end services
• Ability to write maintainable and testable code (unit and integration tests)
• Practical experience working with PHP and Laravel in production environments
• Ability to maintain and extend existing Laravel-based services
• Comfort working with and debugging legacy PHP/Laravel codebases

Front-end (React.js)

• Strong experience building complex applications with React
• Confident use of modern React patterns (hooks, context, controlled components)
• Experience with state management solutions (Redux, React Query, or similar)
• Ability to design and implement scalable component architectures
• Strong understanding of front-end performance optimization (memoization, rendering control, code splitting)
• Experience working with forms, validation, and complex UI state
• Knowledge of accessibility (a11y) and cross-browser compatibility
• Experience integrating front-end applications with APIs and handling asynchronous data flows
• Ability to maintain consistent UI/UX in large codebases

Responsibilities

• Develop and maintain back-end services using Node.js and TypeScript
• Design, implement, and evolve RESTful APIs
• Maintain and extend existing PHP and Laravel services
• Build and maintain complex front-end applications using React
• Collaborate closely with the client’s team on feature development and technical decisions
• Ensure code quality through testing, code reviews, and best engineering practices
• Work with existing and legacy systems, improving stability and maintainability
• Take ownership of features end-to-end, from implementation to delivery
• Contribute to performance, reliability, and scalability improvements across the full stack

Please note: In addition to the stages listed bellow, the first step of the process will be an AI interview followed by a technical test.

Our transparent recruitment journey usually takes up to 2 weeks and includes a few stages:

1. Recruiting Interview -> 30-45 min
2. Technical Interview -> 1-1,5h
3. Client Interview (optional) -> up to 1h
4. Pre-Offer Call -> 15min
5. Reference Check
6. Offer

We offer:

• Competitive salary, room for development and growth.
• Possibility to work in the Bratislava and Kyiv offices or fully remotely.
• Loyal management, interesting tasks, constant support.
• Medical insurance (optional).
• English courses.
• Technical equipment providing.
• Paid vacations 20 workdays, paid sick leave, regular salary reviews;
• Flexible schedule and ability to manage your working hours;
• Support your personal growth and skills upgrading.
• The great environment inside the team, support of initiatives, and ability to contribute to the common goal.

We do believe that the success of altamira.ai is impossible without the success of our Talents and the success of our Clients!