1,807,552open jobs
104,170companies
272,902added this week
Browse all
Salary
$68k – $93k per year
Location
In office (Gdańsk)
Seniority
Senior
Employment
Contractor

First seen by Alion on Oct 8, 2026.

Overview
Company
Impact
Profile match
Invarion provides the USA's top software for traffic control planning and swept path analysis. Simplify your planning with Invarion today.

About the Role

We are looking for a Senior Product Engineer who can turn ideas and product goals into high-quality software across web and mobile platforms.

Our current UI stack includes React, React Native, and Angular, but we are deliberately not hiring for one specific framework. You may come from one of those ecosystems, or from Flutter, native iOS/Android, or another modern application development background.

What matters most is your ability to reason about problems, learn unfamiliar technologies quickly, choose the right tools for the job, and deliver great user experiences.

We work in an AI-enabled engineering environment, so we are looking for someone who knows how to use AI tools effectively — not simply for code completion, but to explore solutions, learn new platforms, prototype quickly, debug problems, and move from a goal to a working product.

Strong logical and abstract thinking is one of the most important qualities for this role.

What You'll Do

  • Own problems, not just tickets: Take product goals and turn them into practical technical solutions.

  • Build across our UI stack: Work with React, React Native, Angular, and other technologies when they are the right fit for the problem.

  • Use AI as an engineering tool: Use AI to accelerate research, implementation, debugging, prototyping, testing, and learning.

  • Move between technologies when needed: Become productive in unfamiliar frameworks, libraries, APIs, or platforms without being constrained by your existing stack.

  • Craft excellent user interfaces: Build polished, intuitive, responsive interfaces with strong attention to interaction details and user experience.

  • Make good architectural decisions: Break complex problems into understandable abstractions and choose solutions with appropriate trade-offs.

  • Take features from idea to production: Contribute throughout the lifecycle, including implementation, testing, deployment, monitoring, and iteration.

  • Collaborate across the stack: Work with APIs and backend services when required to deliver complete product features.

  • Raise the engineering bar: Share knowledge, improve development practices, and help the team find better ways to build software.

What We're Looking For

  • Strong software engineering fundamentals and experience shipping production applications.

  • Excellent logical, analytical, and abstract thinking skills.

  • Ability to understand an unfamiliar problem, decompose it, and independently work toward a solution.

  • Strong experience in at least one modern application development ecosystem, ideally including React, React Native, or Angular.

  • Experience in Flutter, native iOS, native Android, or another comparable web/mobile platform is also highly relevant.

  • Ability and willingness to learn new technologies rather than being attached to a particular framework.

  • Strong understanding of application architecture, state management, APIs, asynchronous systems, and testing.

  • Experience creating high-quality user interfaces, with attention to usability, visual polish, responsiveness, and interaction design.

  • Practical experience using modern AI-assisted development tools as part of your engineering workflow.

  • Strong TypeScript, JavaScript, or comparable programming-language fundamentals.

  • Ability to work independently and take ownership from an ambiguous problem through to a finished result.

How We Think About AI

AI is becoming part of how software is built.

We don't measure engineers by how much code they can type manually. We care about whether they can understand a problem, reason about possible solutions, use the tools available to them, validate the result, and deliver something that works well.

You should be comfortable using different AI tools and models where they are useful — whether that means exploring an unfamiliar API, generating a prototype, understanding an existing codebase, debugging an issue, evaluating approaches, or accelerating implementation.

The important skill is knowing what you are trying to achieve and being able to judge whether the result is actually good.

Nice to Have

  • Experience working across both web and mobile products.

  • Experience with more than one of React, React Native, and Angular.

  • Full-stack experience with APIs, databases, distributed systems, or backend TypeScript.

  • Experience establishing CI/CD and automated testing workflows.

  • Product or UX sensibility beyond pure implementation.

  • Experience rapidly prototyping new product ideas.

  • Experience integrating native platform capabilities.

  • .NET experience.

  • RxJS or functional programming experience.

About Our Team

We have a strong engineering team and currently build user interfaces with React, React Native, and Angular.

We are looking for engineers who are comfortable operating beyond the boundaries of a single technology stack. The ideal person can understand a goal, reason about the problem, learn whatever is necessary, and use modern tools — including AI — to deliver a high-quality result.

This role offers significant ownership and the opportunity to influence how we build web and mobile products, how we use AI in engineering, and how we approach product development as a team.

Tech stack

  • React
  • Angular
  • TypeScript
  • React Native
  • UX/UI
  • HTML
  • CSS
  • Responsive Web Design (RWD)
  • WCAG
Free account
Stop reading job ads. Get the ones that fit.
One free account turns this page into a shortlist built around your stack, your level and your pay.
Match on every job. Stack, seniority, pay and location, scored against your profile.
1,807,552 open roles. Read straight off company career pages, refreshed every day.
Unlimited applications. Every one you send is tracked in one place, on-site or on a company board.
3 tailored CVs a month. Rewritten for the exact job you are applying to. Included free.
Create a free account Continue with Google
Free forever. No card. Under a minute.

Your match

How well do you fit this role?
Two answers are enough for a real match. No account needed.
Check my fit
Answers stay in this browser until you create an account.

Recommended for you based on this role

Mobile
Similar stack
Same company
Gdańsk
$22k per year (net) • In office • Full-Time • Moscow
PHP
1C
PHP
Bitrix
Apply
In office • Full-Time • 5+ years exp • Bachelor's Degree • Berlin
JavaScript
Java
Kotlin
TypeScript
SQL
Swift
Objective-C
Java
Gradle
AI/ML
AI Agents
Frontend
React.js
Mobile
React Native
State Management
Deep Linking
Maestro
DevOps
Rest API
GitHub Actions
GitLab CI
QA
Jest
Detox
Apply
$30k – $48k per year • In office • Full-Time • Tokyo
Mobile
Clean Architecture
DevOps
AWS
Apply
$107k – $178k per year • Equity • In office • Full-Time • 7+ years exp • Bachelor's Degree • Toronto
JavaScript
Java
Kotlin
Dart
Swift
Objective-C
Java
Gradle
Kotlin
Kotlin Coroutines
Frontend
React.js
Mobile
Jetpack Compose
UIKit
SwiftUI
Combine
MVI
MVVM
Flutter
React Native
Kotlin Multiplatform
Clean Architecture
State Management
Modularization
DevOps
WebRTC
CI/CD
Bazel
Apply
$81k – $136k per year • Equity • In office • Full-Time • 3+ years exp • Toronto
JavaScript
Java
Kotlin
Swift
Objective-C
Kotlin
Kotlin Coroutines
Swift
Swift Concurrency
Frontend
React.js
Mobile
Jetpack Compose
UIKit
SwiftUI
Combine
React Native
Clean Architecture
DevOps
WebRTC
CI/CD
Apply
≈ $16k – $46k per year (Estimated) • In office • Full-Time • 3+ years exp • Bachelor's Degree • Taguig
Python
JavaScript
TypeScript
Ruby
C#
Node JS
Databases
MySQL
Redis
Oracle
Memcached
Frontend
Angular
React.js
JQuery
DevOps
GCP
Azure
AWS
Apache HTTP Server
Apply
Sr. SW Engineer-1 5 days ago
≈ $15k – $40k per year (Estimated) • Hybrid • Full-Time • 5+ years exp • Bachelor's Degree • Bengaluru
Python
JavaScript
TypeScript
Python
Flask
Frontend
Angular
React.js
DevOps
Rest API
CI/CD
Jenkins
Git
Management
Agile
Apply
≈ $69k – $120k per year (Estimated) • In office • Full-Time • 5+ years exp • Hanover
Go
JavaScript
Java
TypeScript
SQL
Databases
ElasticSearch
Frontend
Angular
Mobile
Room
DevOps
Ansible
Linux
Unix
Apply
≈ $30k – $78k per year (Estimated) • In office • 10+ years exp • Bengaluru
JavaScript
Java
TypeScript
C#
Node JS
Java
Spring Boot
C#
.NET
Frontend
React.js
DevOps
Rest API
Apply
$76k – $94k per year • In office • 5+ years exp • Logan Lake
JavaScript
Node JS
Node JS
Commander.js
Management
Microsoft Office
Apply
≈ $47k – $88k per year (Estimated) • Hybrid • Contractor • Gdańsk
Java
Kotlin
Swift
Java
Gradle
Kotlin
Retrofit
Hilt
Ktor
MockK
Detekt
Koin
SQLDelight
AI/ML
Copilot
Cursor
Claude
Mobile
JUnit
Jetpack Compose
MVI
MVVM
Room
Firebase
Kotlin Multiplatform
Clean Architecture
Compose Multiplatform
Dependency Injection
DevOps
Dynatrace
CI/CD
Jenkins
Git
Cybersecurity
SonarQube
OWASP
Design
Figma
Apply
≈ $58k – $106k per year (Estimated) • In office • Gdańsk
AI/ML
LLM
Apply
≈ $45k – $78k per year (Estimated) • Remote (Poland) • Freelance • 6+ years exp • Warsaw • Poznań • Wrocław • Lublin • Gdańsk
Python
Java
TypeScript
SQL
AI/ML
Prompt Engineering
DevOps
CI/CD
Docker
Kubernetes
Grafana
Management
Agile
QA
Selenium
JMeter
Playwright
k6
Apply
Hybrid • Full-Time • Warsaw • Poznań • Wrocław • Lublin • Gdańsk
Analytics
Microsoft Excel
Apply
Hybrid • Full-Time • Warsaw • Poznań • Wrocław • Lublin • Gdańsk
Analytics
Microsoft Excel
Apply
See all jobs
This is one of many
1,807,552 more open roles from verified company boards, updated every day.