mindSoft

We're looking for a skilled Node.js developer who is eager to learn and grow with us. You'll be developing and maintaining high-quality applications using Node.js and related technologies. This is a fantastic opportunity to work on exciting projects, be part of a friendly team, and take your career to the next level. Come join us and let's build great things together!
🧰 Requirements:

• At least 1 year of commercial experience as a Node.js engineer.
• Strong knowledge of JavaScript and TypeScript.
• Experience with Express.js.
• Experience with relational databases (PostgreSQL and/or MySQL).
• Familiarity with AWS services (ec2, s3, lambda).
• Good understanding of RESTful API design principles.
• Unit testing (mocha/jest).
• Excellent problem-solving and debugging skills.
• Strong communication and collaboration abilities.
• Pre Intermediate English (or higher).

🧰 As a plus:

• Experience with Nest.js
• Experience with Docker
• Non-relational databases (mongoDB, redis, elasticsearch)

💻 Responsibilities:

• Developing and maintaining high-quality applications using Node.js and related stack.
• Following high-end coding standards.
• Troubleshooting and debugging applications to ensure optimal performance.
• Implementing and maintaining database systems.
• Designing and implementing RESTful APIs.
• Participating in code reviews to ensure code quality.
• Keeping up-to-date with industry trends and best practices in Node.js development.
• Collaborating with cross-functional teams to deliver tasks on time.

🎁 We offer:

• Competitive salary
• Paid time off and holidays
• Professional development opportunities
• Collaborative and inclusive work environment
• Opportunity to work on challenging and innovative projects
• Growth opportunities within the company
• Office located in Kraków

We are currently looking for a Senior Full Stack Developer (TypeScript / Next.js / NestJS) to join our remote team and contribute to building and scaling high-traffic digital platforms.
You will work closely with Product Managers, Designers, and fellow Engineers to ensure delivery of robust, scalable, and pixel-perfect applications with clean architecture and excellent performance.

RESPONSIBILITIES:

• Develop and maintain full-stack applications using TypeScript, Next.js (frontend), and NestJS (backend)
• Translate Figma and design specs into pixel-perfect, responsive UIs
• Optimize front- and backend performance for speed, scalability, and SEO
• Build and maintain scalable and secure PostgreSQL data models
• Implement i18n/localization for multilingual SaaS platforms
• Conduct code reviews and mentor team members
• Integrate 3rd-party APIs and services
• Contribute to CI/CD and Agile best practices
• Collaborate closely with cross-functional remote teams

REQUIREMENTS:

• 5+ Years of full-stack development experience
• Strong expertise in TypeScript across the stack
• Deep hands-on experience with Next.js and NestJS
• Experience with PostgreSQL and scalable data design
• Proven track record delivering pixel-perfect UIs from mockups
• Understanding of web performance tuning and accessibility
• Familiarity with i18n/localization best practices
• Strong communication skills and ability to work independently

NICE TO HAVE:

• Experience with Stripe, PayPal or other payment gateway integrations
• Familiarity with CI/CD pipelines, Docker, or AWS
• Experience with SaaS platforms or multi-tenant systems

WHAT WE OFFER:

• Long-term, full-time contract (B2B)
• Fully remote work setup
• 22 paid vacation days + national holidays based on your country
• Working hours (between 7:00–18:00 Bulgaria time)
• Annual performance bonus
• Upskilling and learning budget
• Opportunity to work on fast-scaling international SaaS products
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
   

Key Requirements:

• At least 4+ years of commercial experience as a Full-Stack Developer;
• Experience with PHP and object-oriented programming principles;
• Strong knowledge of Vanilla JavaScript (ES5/ES6);
• Web Concepts — DOM manipulation, HTML rendering, Basic Web APIs and HTML page structure;
• Familiarity with client/server architecture (MVP) and debugging tools like xdebug and browser dev-tools;
• Hands-on experience with MySQL or other relational databases;
• English — Upper-Intermediate or higher.

Will be a plus:

• Experience with React.js;
• Hands-on knowledge of Redis;
• Background in AdTech (SSP/DSP, DFP, header bidding, floor price optimization, etc.);
• Familiarity with Agile methodologies.

What you will do:

• Work on publisher integrations — customizing video player behavior, visual modifications, and player API usage across various environments;
• Develop and maintain backend operational tools for debugging, monitoring, and platform support;
• Participate in publisher onboarding — player setup, content API integrations (MRSS), and bulk operations;
• Build and optimize content and ad targeting solutions using key/value targeting and custom HTML tags;
• Investigate and resolve complex bugs in both frontend and backend systems;
• Work on performance optimization and SEO improvements (Web Vitals, DevTools analysis);
• Research, develop, and document new features and enhancements for long-term stability and scalability;
• Contribute to monetization logic — implement new integrations, data research, and advanced backend fixes.

Why Join Us?

• Be part of a friendly international team, working together on interesting global projects;
• Enjoy many chances to grow, learn from mentors, and work on projects that make a real difference;
• Join a team that loves fresh ideas and supports creativity and new solutions;
• Work closely with clients, building great communication skills and learning directly from their needs;
• Thrive in a workplace that values your needs, offering flexibility and a good balance between work and life

We're looking for an experienced Senior Full Stack Engineer to join a dynamic, long-term project with a global team. If you're passionate about building scalable systems, enjoy working across the stack — this role is for you.

✅ What You’ll Bring:

Must-Have Skills:

• 5+ years of hands-on experience in full-stack development, with a strong focus on Java (Spring, Spring Boot).
• Solid expertise in cloud and backend technologies, especially AWS, Kubernetes, and both relational and non-relational databases.
• Proven ability to design and implement scalable, maintainable microservices.
• Experience delivering end-to-end solutions and collaborating effectively with global teams.
• Willingness to work with frontend technologies.

Nice-to-Have Skills:

• Practical experience with Vue.js.
• Knowledge of reactive programming in Java (Project Reactor, Mono).
• Familiarity with PostgreSQL and DynamoDB.
• Experience working with Kafka, AWS SQS, and SNS.
• Background in building CI/CD pipelines for automated testing and deployment.
• Experience upgrading Java Spring/Spring Boot applications to the latest versions.

Ready to join a forward-thinking team and work on impactful, global-scale projects?
Apply now or reach out to us for more details!