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Senior Software Engineer (React, React Native & Node.js)
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Offer summary

(Summary generated by AI based on the full job description)

The project focuses on full stack development using Node.js, React, TypeScript, JavaScript. Knowledge of AWS, Docker, PostgreSQL, Git and Agile environments is required. Responsibilities include designing, developing, testing, and supporting systems, participating in architectural decisions, and full ownership of project delivery. Benefits include private healthcare, insurance, Multisport card, and English classes.

newyou can start ASAP

Senior Software Engineer (React, React Native & Node.js)

Company: Webellian Sp. z o.o.

from: 25 June 2026
to: 25 July 2026
salary not specifiedB2B contract (full-time)
salary not specifiedcontract of employment
Offer parameters
level:senior
working mode:hybrid
Warszawa, Mokotów
Warszawa, MokotówDomaniewska 45View on map

Requirements

Expected technologies

JavaScript
TypeScript
Node.js
React
React Native
Expo
Microsoft Azure
AWS
Docker
PostgreSQL
Git
Bitbucket
Jenkins
GraphQL
SQL

Operating system

Windows

Our requirements

  • Master’s degree in Software Engineering, Computer Science, or related technical field
  • Must-have Technologies: JavaScript, TypeScript, Node.js, React
  • Advantage: React Native, Expo, Microsoft Azure
  • Fluency in English is required (minimum B2, C1 preferred)
  • Excellent verbal and written communication skills
  • Experience working with AWS, Docker, PostgreSQL, Git/Bitbucket, and Jenkins
  • Familiarity with REST APIs and GraphQL
  • Familiarity with SQL and NoSQL databases
  • Strong understanding of Agile methodologies and SDLC practices
  • Understanding of software architecture trade-offs, scalability considerations, design patterns, and SOLID principles
  • Leadership mindset: previous experience in technically leading projects, participating in architectural decision-making, and taking responsibility for the technical delivery process
  • Experience working in customer-facing or international environments

Optional

  • Experience with CI/CD pipelines and deployment automation for web and mobile applications (e.g., EAS Build for Expo)
  • Experience in scaling applications and handling high-traffic workloads
  • Experience with cloud-native architectures and distributed systems
  • Familiarity with monitoring, observability, and production troubleshooting practices
  • Experience in fintech or insuretech environments

Your responsibilities

  • Analyze business and technical functional and non-functional requirements
  • Design and develop clean, maintainable, and scalable code, including unit tests
  • Prepare and maintain technical documentation
  • Propose and implement technical improvements to applications and development processes
  • Participate in troubleshooting and resolving complex technical issues
  • Collaborate with other engineering teams to design and implement technical solutions
  • Contribute to architectural and technical decision-making processes
  • Support SDLC activities end-to-end, including development, testing, deployment, and production support
  • Take ownership of technical delivery

About the project

We are actively looking for a Senior Full Stack Engineer (Node.js & React).
In this role, you will own technical responsibilities from conception to delivery. As a Senior Full Stack Engineer, you will collaborate closely with engineering teams, interact directly with customers and stakeholders, work on mission-critical systems at scale, and support the SDLC process end-to-end.
This role requires a strong ownership mindset and readiness to take technical responsibility for project delivery, including participation in architectural discussions and technical decision-making.
To be successful in this position, you should have at least 6 years of commercial experience in Full Stack development, strong understanding of Node.js, React, and related frameworks, and experience working within Agile engineering environments.

This is how we organize our work

This is how we work

agilescrumwaterfall

This is how we work on a project

  • Continuous Deployment
  • Continuous Integration
  • issue tracking tools
  • testing environments
We love to share knowledge to grow excellence, we speak our minds without playing politics, and just love to hang around together.If you share our passions - we want to meet you! So go ahead and apply.
Company

What we offer

  • Contract under Polish law: B2B or Umowa o Pracę
  • Benefits such as private medical care, group insurance, Multisport card
  • There are English classes available
  • Hybrid work (at least 2 days/week on-site) in Warsaw (Mokotów)
  • Opportunity to work with excellent professionals
  • High standards of work and focus on the quality of code
  • New technologies in use
  • Continuously learning and growth
  • International team
  • Pinball, PlayStation & much more (on-site 🤫)

Benefits

  • sharing the costs of sports activities
  • private medical care
  • life insurance
  • remote work opportunities
  • fruits
  • video games at work
  • coffee / tea
  • drinks
  • parking space for employees
  • leisure zone
  • Pinball, PlayStation & much more
  • English classes

Recruitment stages

  • 1.
    📞A quick phone call with our Recruiter.
  • 2.
    📅Online technical interview, testing your skills.
  • 3.
    📅II face-to-face interview with your potential supervisor.
  • 4.
    🗒️Feedback.

Webellian Sp. z o.o.

Webellian is a well-established Digital Transformation and IT consulting company committed to creating a positive impact for our clients. We strive to make a meaningful difference in diverse sectors such as insurance, banking, healthcare, retail, and manufacturing. Our passion for cutting-edge and disruptive technologies, as well as our shared values and strong principles, are what motivate us. We are a community of engineers and senior advisors who work with our clients across industries, playing a deep and meaningful role in accelerating and realizing their vision and strategy.

This is how we work

Senior Software Engineer (React, React Native & Node.js)
I apply to:
Webellian Sp. z o.o.
Warszawa, Mokotów
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