Senior Full-Stack Software Engineer @ Oversee

Oversee; Warszawa; Remote; PLN 180,000 - 240,000; Full time

Job summary

A travel management technology company seeks a Senior Full-Stack Software Engineer to design scalable systems and tackle technical challenges in a dynamic environment. The role is fully remote with a B2B contract, requiring proficiency in Python, Java, and TypeScript. Strong collaboration skills and a proactive attitude are essential. Competitive rate of 200-250 PLN/h offered.

Qualifications

• 5+ years of experience in software engineering with a track record of building production systems.
• Strong background in designing scalable, distributed applications.
• Hands-on experience with Python/Django and Java/Kotlin (JVM stack).
• Familiarity with TypeScript/React.
• Solid understanding of Linux runtime environments.

Responsibilities

• Design, build, and maintain high-performance backend services, data pipelines, and distributed infrastructure.
• Develop front-end features in TypeScript/React to bring complex ideas to life.
• Implement complex business logic and intelligent filtering algorithms that power our platform.
• Optimize fare-tracking solutions to help clients save millions annually.
• Contribute to architectural decisions for distributed, high-scale applications.
• Integrate with third-party APIs and ensure smooth interoperability.

Skills

Software engineering experience

Distributed systems design

Python/Django

Java/Kotlin

TypeScript/React

Linux environments

Performance optimization

Collaborative feedback

Fluent in English

Job description

Senior Full‑Stack Software Engineer @ Oversee

Warszawa, Warsaw, Masovian Voivodeship, Polska

At Oversee, we are reimagining how corporate travel is managed.

Our cutting‑edge technology and machine‑learning solutions replace the outdated, manual processes that slow companies down — unlocking cost savings, efficiency, and smarter decisions.

We bring together travel analytics and actionable insights, giving global enterprises a clear view of their spend the tools to continuously improve their programs.

We’re growing fast, with exponential YoY revenue growth and partnerships with some of the world’s largest Fortune 500 companies.

If you are looking for a dynamic, fast‑paced, and positive environment and want to help solve a $17B global problem, Oversee is the place to build, grow, and make an impact.

As a Senior Full‑Stack Software Engineer, you’ll be at the core of this mission—designing scalable systems, solving tough technical challenges, and making a meaningful impact on how companies manage billions in travel spend.

Responsibilities

• Design, build, and maintain high‑performance backend services, data pipelines, and distributed infrastructure.
• Develop front‑end features in TypeScript/React to bring complex ideas to life.
• Implement complex business logic and intelligent filtering algorithms that power our platform.
• Optimize fare‑tracking solutions to help clients save millions annually.
• Contribute to architectural decisions for distributed, high‑scale applications.
• Integrate with third‑party APIs (REST/SOAP) and ensure smooth interoperability.
• Collaborate closely with product and business teams to deliver features that drive real impact.

Requirements

• 5+ years of experience in software engineering with a track record of building production systems.
• Strong background in designing scalable, distributed applications.
• Hands‑on experience with Python/Django and Java/Kotlin (JVM stack).
• Familiarity with TypeScript/React.
• Solid understanding of Linux runtime environments.
• Skilled at identifying and solving performance bottlenecks.
• Excellent collaboration skills with the ability to give and receive constructive feedback.
• Fluent in English; strong written and verbal communication.
• Proactive, curious, and eager to keep learning.

Work Mode

100% Remote • B2B contract • Senior level • Rate: 200‑250 PLN/h • Start date: ASAP

Why join us?

Come shape the future of business travel with us!