Senior Software Engineer (Full stack)

Zs Associates; Warszawa; Hybrid; PLN 120,000 - 190,000; Full time

Benefits offered by this job

Hybrid working model

Job summary

ZS Associates in Warsaw is seeking a skilled Full Stack Developer with React.js and Node.js to design, develop, and deliver scalable web applications. You will work closely with cross‑functional teams to build digital solutions that impact patients, caregivers, and consumers worldwide.

You will contribute to MVPs and prototypes, build backend services in Python, and create frontend experiences using modern JS frameworks.

Qualifications

• A relevant Bachelor's or higher‑education degree in Computer Science, Data Science, or related fields.
• 2–4 years of experience in a data engineering role.
• Proficiency in Python and frontend applications using JavaScript/TypeScript and frameworks such as React, Angular, or Vue.
• Demonstrated ability to collaborate with cross‑functional teams and communicate technical solutions effectively.
• Ability to travel to other client offices or locations as needed.
• Strong communications skills.
• Fluency in English
• Client‑first mentality
• Intense work ethic
• Collaborative spirit and problem‑solving approach

Responsibilities

• Design and develop MVPs and prototypes across a variety of digital innovation initiatives.
• Build scalable backend services using Python and frameworks such as FastAPI, Flask, or Django.
• Develop modern frontend applications using JavaScript/TypeScript and frameworks such as React, Angular, or Vue.
• Integrate APIs, databases, and cloud services to support rapid solution development.
• Collaborate closely with product owners, architects, AI engineers, and business stakeholders.
• Translate business ideas and innovation concepts into functional software solutions.
• Support experimentation and proof-of-concept development for emerging technologies.
• Contribute across multiple projects and adapt quickly to changing business priorities.
• Follow engineering best practices including code reviews, testing, documentation, and version control.

Skills

React.js

Node.js

JavaScript/TypeScript

English fluency

Team collaboration

Education

Bachelor's degree in Computer Science / Data Science

Tools

Python

FastAPI / Flask / Django

REST APIs

Job description

ZS is a place where passion changes lives. As a management consulting and technology firm focused on improving life and how we live it, we transform ideas into impact by bringing together data, science, technology and human ingenuity to deliver better outcomes for all. Here you’ll work side-by-side with a powerful collective of thinkers and experts shaping life-changing solutions for patients, caregivers and consumers, worldwide. ZSers drive impact by bringing a client-first mentality to each and every engagement. We partner collaboratively with our clients to develop custom solutions and technology products that create value and deliver company results across critical areas of their business. Bring your curiosity for learning, bold ideas, courage and passion to drive life-changing impact to ZS.

Overview:

We are looking for a highly skilled Full Stack Developer with strong expertise in React.js and Node.js to join our growing technology team. You will play a key role in designing, developing, and delivering scalable, high-quality web applications, working closely with cross-functional teams to build impactful digital solutions.

What you'll do:

• Design and develop MVPs and prototypes across a variety of digital innovation initiatives.
• Build scalable backend services using Python and frameworks such as FastAPI, Flask, or Django.
• Develop modern frontend applications using JavaScript/TypeScript and frameworks such as React, Angular, or Vue.
• Integrate APIs, databases, and cloud services to support rapid solution development.
• Collaborate closely with product owners, architects, AI engineers, and business stakeholders.
• Translate business ideas and innovation concepts into functional software solutions.
• Support experimentation and proof-of-concept development for emerging technologies.
• Contribute across multiple projects and adapt quickly to changing business priorities.
• Follow engineering best practices including code reviews, testing, documentation, and version control.

Why Join This Role?

• Work on a wide variety of innovation and digital transformation initiatives.
• Own solutions from concept through prototype delivery.
• Gain exposure to cutting‑edge technologies, including AI and emerging digital platforms.
• Collaborate with a multidisciplinary team of engineers, innovators, and healthcare experts.
• See your ideas rapidly translated into impactful solutions.
• Contribute to technology initiatives that help improve healthcare and patient outcomes.
• Enjoy a dynamic environment where no two projects are the same.

What You’ll Bring:

• A relevant Bachelors or higher‑education degree in Computer Science, Data Science, or related fields.
• 2-4 years of experience in a data engineering role, with a focus on building scalable, reliable, and high‑performance data systems.
• Proficiency in programming languages such as Python and experience with frontend applications using JavaScript/TypeScript and frameworks such as React, Angular, or Vue.
• Demonstrated ability to collaborate with cross‑functional teams and communicate technical solutions effectively.
• Ability to travel to other client offices or locations as needed.
• Strong communications skills.
• Fluency in English
• Client‑first mentality
• Intense work ethic
• Collaborative spirit and problem‑solving approach

How you’ll grow:

• Cross‑functional skills development & custom learning pathways
• Milestone training programs aligned to career progression opportunities
• Internal mobility paths that empower growth via s‑curves, individual contribution and role expansions

Perks & Benefits:

At ZS, your growth matters. We offer a comprehensive total rewards package that supports your health and well‑being, financial future, time away, and professional development. With robust skills‑building programs, multiple career progression paths, internal mobility, and a deeply collaborative culture, you’ll have the opportunity to do meaningful work, expand your capabilities, and thrive as part of a global community. For details on total rewards in Poland, visit ZS Poland office locations | Where we work | ZS.

Hybrid working model:

We are committed to giving our employees a flexible and connected way of working. A flexible and connected ZS allows us to combine work from home and on‑site presence at clients/ZS offices for the majority of our week. The magic of ZS culture and innovation thrives in both planned and spontaneous face‑to‑face connections.

Travel:

Travel is a requirement at ZS for client facing ZSers; business needs of your project and client are the priority. While some projects may be local, all client‑facing ZSers should be prepared to travel as needed. Travel provides opportunities to strengthen client relationships, gain diverse experiences, and enhance professional growth by working in different environments and cultures.

ZS is an equal opportunity employer and is committed to providing equal employment and advancement opportunities without regard to any class protected by applicable law.