Senior Fullstack Engineer (Node.js, TypeScript, Next.js) - Freelance to Perm Position

About 10Clouds

10Clouds is a  top international software consultancy , recognized by Deloitte and the Financial Times as one of the fastest-growing technology companies in Central Europe. We design and build world-class digital products, with deep expertise in  AI product development, IT staff augmentation , and full-stack software services.

For the last 15 years our team has delivered transformative solutions to over 500 clients : startups, scale-ups, and enterprises — including global brands like  Pinterest, Baidu, Facebook, or Orange.

We’re looking for a skilled fullstack engineer with strong experience in Node.js, Next.js, and TypeScript to help us build a high-impact invoicing system focused on early / prepayment invoicing. The first 3 months will focus on building out early / prepayment functionality followed by long-term maintenance and new feature development. This role requires a balance of backend strength and frontend capability, combined with a proactive, solutions-oriented mindset.

Key Responsibilities

Design, develop, and maintain scalable backend services using Node.js and TypeScript

Build simple, functional frontend components with Next.js

Collaborate closely with product, engineering, and business teams

Take ownership of technical solutions from concept to deployment

Ensure system performance, reliability, and scalability

What We’re Looking For

5 years of experience in backend development

3+ years of hands-on experience with Node.js

2+ years of experience with TypeScript

Experience with both SQL (PostgreSQL) and NoSQL (MongoDB) databases

Solid understanding of HTML5, CSS3, and responsive design

Experience building applications using Next.js

Familiarity with caching (Redis, MemCache) and messaging systems (Kafka, RabbitMQ)

Agile development experience

• Excellent communication skills in English

Bonus Points

Experience with Tailwind CSS or other utility-first CSS frameworks

Basic understanding of UX / UI principles

Familiarity with Nest.js, Docker, Kubernetes, or AWS

Experience designing APIs and building microservices

Mindset & Soft Skills

We’re looking for more than just someone to write code. You should bring :

A strong ownership mentality and a client-first approach

Ability to challenge requirements and suggest better solutions

Willingness to contribute to product direction and technical decisions

A track record of proactive problem-solving beyond what’s assigned