Platform Engineer

Sensor Tower; Kraków; On-site; PLN 180,000 - 240,000; Full time

Job summary

Sensor Tower is seeking a Platform Engineer to improve the infrastructure, tooling, and delivery workflows used by a large engineering team. The role blends infrastructure work with software development to deliver reliable, scalable cloud-based systems.

You will focus on CI/CD, automation, observability, and developer experience, using AWS, Terraform, Ansible, and bespoke tooling while collaborating across squads to streamline releases and reduce build times.

Qualifications

• Experience building and maintaining complex CI/CD workflows.
• Software development experience including internal tools, APIs, or automation.
• Experience with AWS or another cloud provider.
• Telemetry and monitoring experience (OpenTelemetry, Grafana, Kibana).
• Strong Computer Science and System Design fundamentals.

Responsibilities

• Improve developer experience by building tools and workflows for development, testing, and shipping software.
• Maintain infrastructure automation with Ansible, Terraform, and Terragrunt.
• Improve reliability and performance of CI/CD workflows.
• Identify causes of slow builds, failed pipelines, and flaky tests.
• Develop internal tools, improve test infrastructure, and occasionally work on product features.
• Improve observability using OpenTelemetry, ELK.
• Leverage AI to improve engineering workflows with cloud-based agent tools.

Skills

CI/CD workflows

Software development

Cloud experience

Telemetry/Monitoring

System design

Go/Ruby willingness

Tools

AWS

Terraform

Terragrunt

Ansible

Jenkins

Docker

ELK

ClickHouse

MongoDB

PostgreSQL

Ruby-on-Rails

Job description

We’re looking for a Platform Engineer to improve the infrastructure, developer tooling, and delivery workflows used by more than 100 engineers.

The role combines infrastructure and software development, with an approximate 65/35 split. You’ll work on cloud infrastructure, deployment automation, observability, CI/CD, and internal tooling. The goal is to make development and releases more reliable, efficient, and straightforward.

What You’ll Do

• Improve developer experience and engineering productivity by building tools and workflows that make it easier for engineers to develop, test, and ship software.
• Maintain infrastructure automation with Ansible, Terraform, and Terragrunt.
• Improve the reliability and performance of our CI/CD workflows.
• Find the causes of slow builds, failed pipelines, and flaky tests.
• Develop internal tools, improve test infrastructure, and occasionally work on product features.
• Improve observability across our infrastructure and delivery workflows using OpenTelemetry, ELK.
• Leverage AI to improve engineering workflows by building cloud-based agent tools and helping teams adopt effective practices.

Our tech stack

AWS, Terraform, Terragrunt, Ansible, Jenkins, Docker, ELK, ClickHouse, MongoDB, PostgreSQL, and Ruby-on-Rails.

What We’re Looking For

• Experience developing and maintaining complex CI/CD workflows.
• Software development experience, such as building internal tools, APIs, backend services, or automation.
• Experience with AWS or another cloud provider.
• Telemetry and monitoring experience (OpenTelemetry, Grafana, Kibana).
• Strong Computer Science and System Design fundamentals.
• Willingness to learn and use Ruby and/or Go.

What We’d Be Particularly Excited About

• Experience optimizing CI build times, especially with Jenkins.
• Experience with Docker or Kubernetes.
• Experience with Ruby, Python, or JavaScript.
• Familiarity with build systems such as Webpack or Gradle.

You don’t need to know every technology in our stack. We value strong technical fundamentals, curiosity, and the ability to work on different types of engineering problems.

Blog Posts

Read more about some of our Technical challenges here (written by members of our engineering team):
https://sensortower.com/blog/how-we-scaled-to-thousands-of-sidekiq-workers

About Sensor Tower

Sensor Tower is a global provider of digital intelligence solutions, empowering companies to understand consumer behavior and market performance across mobile apps, digital platforms, and gaming ecosystems. Headquartered in San Francisco, Sensor Tower's insights are trusted by more than 2,500 enterprises worldwide.

Founded in 2013, Sensor Tower’s market insights have helped marketers, app developers, and gaming leaders demystify the mobile app ecosystem with visibility into usage, engagement, and paid acquisition strategies. Today, Sensor Tower’s digital market insights platform has expanded to include Gaming, Web, Audience, and Digital Advertising Insights, helping global leaders understand market trends and their competitor’s strategies and audiences across the entire digital ecosystem.

Why Sensor Tower?

Our flexible work environment allows employees to live in greater connection with the people, places, and activities they love!

Global Teams

Sensor Tower has a global presence, with teams across the world and available in most time zones, including North America, Europe, Middle East, Africa, APAC and LATAM. We maintain regional offices in SF, LA, NY, London, Singapore, Beijing, Seoul, Tokyo and Vancouver.

We are committed to equal employment opportunities regardless of race, color, ancestry, religion, sex, national origin, sexual orientation, age, citizenship, marital status, disability, gender identity, and veteran status. We will consider qualified applicants with arrest and conviction records. If you have a disability or special need, please do not hesitate to let us know and we'll do our best to accommodate.

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.