Job opportunities in the Octopus Ventures portfolio

Octopus Ventures
Octopus Ventures

Fullstack Engineer (JS, Java)



Software Engineering
Warsaw, Poland
Posted on Friday, May 17, 2024
Job title: Fullstack Engineer (JS, Java)

Department: Engineering

Reporting to: Engineering Manager

Location: Poland

Purpose of Role

We’re looking for a Fullstack Engineer with JS and Java to join our Market Performance Group in transforming our real-world raw data into valuable and credible industry leading metrics that provide insights to our analysts and our customers.

What You Will Be Doing

  • Maintain and develop new features for our web platforms, used by well-known telecom service providers and analysts to generate insights into their market performance.
  • Develop the code that will drive the next generation versions of our web-based products.
  • Optimize the application, taking into account the size and complexity of visualizing and parsing large data sets
  • Work closely with our data scientists, data engineers, and product teams to create and evolve products that measure market dynamics in the telecommunication space that drive our customers’ short term marketing campaign tactics and their longer-term customer acquisition and retention strategies.

We're Looking For

  • 3+ years of experience with JavaScript/TypeScript/HTML/CSS
  • 3+ years of experience with a JavaScript framework such as Angular or React
  • 3+ years of experience with server-side programming using Java (Spring + Tomcat)
  • 3+ years of experience working with a RDBMS such as: MySQL, PostgreSQL, SQL Server
  • Strong analytical and debugging skills
  • Strong communication and collaboration skills
  • Bachelor’s degree
  • English (B2 or higher)

It'd Be Nice To Have

  • Experience with AWS cloud services (Elastic Beanstalk, EC2, S3, Redshift, Cognito)
  • Experience working with cross-functional teams
  • Experience with the Spring Java framework
  • Experience with Redux
  • Experience working with Apache Tomcat web servers
  • Experience with Node.js
  • Experience with Jenkins
  • Experience in creating data visualizations with JavaScript
  • A background in Linux

About Us

Opensignal is the leading global provider of independent insight and data into network experience and market performance. Our user-centric approach allows communication providers to constantly improve their network and maximize commercial performance. Leading analysts, investors and financial institutions place a high value on our independent analysis and we are regular contributors to their reports.

Real network experience is our focus and ultimately that’s what influences customer choice. Our mission is to advance connectivity for all and here at Opensignal, the team is leading the industry in enabling operators to link their network experience and market performance in a way that has never before been possible.

With offices in Warsaw, London, Boston and Victoria, British Columbia, we are truly global, with employees working across four continents and representing over 25 nationalities. We are an equal opportunity employer dedicated to building an inclusive and diverse workforce.


We believe we are stronger when we not only celebrate our many differences, values, and voices but include them in everyday practice. Having a diverse and inclusive culture is essential, which is why we offer a flexible approach to work-life balance, operating in a remote-hybrid way. We also offer an attractive range of additional benefits, including:

  • 95% remotely - the team meets in the Warsaw office for 1 day/month
  • Warsaw office at Marina Mokotów in a leafy and quiet estate just around the corner from Pole Mokotowskie.
  • Kitchen, free coffee, shower, summer barbecues.
  • Comprehensive private family health care package
  • Multisport Card

Tech stack

  • AngularJS, React, Redux, Java, Spring, Tomcat, AWS Elastic Beanstalk, AWS S3, AWS Cognito, AWS Redshift

Salary Ranges

  • 17 000 – 23 000 on B2B