Senior AI-First Full-Stack Engineer — Remote & Perks

5Blue Software; Warszawa; On-site; PLN 180,000 - 280,000; Full time

Benefits offered by this job

Remote work

English classes

Premium medical insurance

Great international team

Equipment provided

Accounting support in Poland

Paid time off

Flexible payment options

Job summary

5Blue Software is building an AI-first SaaS platform with a focus on security, compliance, and governance. We seek a Senior Full-Stack Developer who can own features from idea to production and contribute on both frontend and backend, collaborating with an international team across Europe, Israel, and South Africa.

You will use AI-assisted development tools to accelerate implementation, debugging, and testing while maintaining strong engineering judgment and code quality.

Qualifications

• : Senior-level software development experience with full-stack focus.
• : Proficient in React, Node.js, and TypeScript; able to ship AI-powered features.
• : Experience building REST APIs and cloud deployments; strong testing and code quality.

Responsibilities

• : Build and deliver full-stack features end to end using React, TypeScript, and Node.js.
• : Develop frontend experiences for a complex B2B SaaS product.
• : Implement backend services, APIs, and integrations.
• : Develop and integrate AI-powered product features.
• : Participate in system design and architectural decisions.
• : Take ownership of CI/CD and DevOps for features.
• : Collaborate with Engineering and Product to define requirements.
• : Communicate technical decisions in English.

Skills

Node.js

React

TypeScript

REST APIs

AI-powered features

Cloud environments

CI/CD

English communication

Product / SaaS experience

Tools

Claude Code

Cursor

GitHub Copilot

LangChain

Job description

5Blue Software is building an AI-first SaaS platform with a focus on security, compliance, and governance. We seek a Senior Full-Stack Developer who can own features from idea to production and contribute on both frontend and backend, collaborating with an international team across Europe, Israel, and South Africa.

You will use AI-assisted development tools to accelerate implementation, debugging, and testing while maintaining strong engineering judgment and code quality.