Senior Fullstack Developer (Node/React)

Intellias; Polska; On-site; PLN 301,000 - 527,000; Full time

Job summary

Intellias in Tel Aviv is seeking an experienced back-end developer to join our growing team. You will work on data-intensive web applications and microservices, collaborating with frontend engineers to design scalable systems and robust APIs.

The role emphasizes high-performance, distributed architectures, and a hands-on approach to solving complex problems. You will participate in on-call rotations and help drive architecture decisions in a fast-paced startup-like environment.

Qualifications

• 5+ years of development experience in startups or agile environments.
• Proficiency in NodeJS/TypeScript (ExpressJS/NestJS).
• Experience with React and front-end collaboration.
• Strong knowledge of PostgreSQL, MongoDB, and Redis.
• B.Sc in Computer Science or equivalent.

Responsibilities

• Design data-intensive web applications.
• Optimize performance to support fast-growing business.
• On-call duties are also present on the project.

Skills

NodeJS/TypeScript

React

Microservices architecture

Distributed enterprise systems

OOP design patterns

Strong communication

Education

B.Sc in Computer Science

Tools

PostgreSQL

MongoDB

Redis

ExpressJS

NestJS

Job description

Dive deep into Digital! For 20 years Intellias has been developing top-tier digital solutions for the world’s leading companies, keeping them in line with the latest technology trends. Join in and provide innovations for the future!

Project overview:

Our team is growing, and we are looking for a talented back-end developer. You will work in small teams on various products, from integrating multiple platforms into one dashboard to managing our data and analytics systems.

Our client provides a property management software product and support services for the $100 billion Airbnb and vacation rental market. They are one of the fastest growing high-tech start-ups in Tel Aviv, profitable and showing very promising results.

The team is all about accuracy, architecture, and impact. We handle complex business logic, data flows and transformations, and focus on providing high-most quality & accuracy. We rely heavily on AI across both dev and design, expecting code to be authored via AI tools rather than written manually, allowing us to focus on system structure, edge cases, and high-most quality

When you will join us, you will have a tremendous impact on company's success.

If you are looking for an interesting product and enjoy being challenged - this is the place for you!

Requirements:

• At least 5 years of experience in development roles, preferably from startups (or other agile environments).
• Experience with NodeJS/Typescript (ExpressJS/NestJS)- Must!
• Experience with React
• Experience in designing high performance, highly scalable microservices architecture with OOP design-patterns and complex business logic.
• Experience in relational databases and NoSQL databases (PostgreSQL, MongoDB, Redis).
• Proficiency in design of distributed enterprise systems - Advantage!
• Experience in the payments domain - nice to have
• Passionate about technology, enjoys solving complex problems and learning new technologies.
• B.Sc in Computer Science (or equivalent)
• A team player with strong communication skills.

Responsibilities:

• Design of the data-intensive web applications.
• Optimize performance to support the fast growing business.
• On-call duties are also present on the project