---
title: 'Senior Software Engineer (python/go, infrastructure) at Sauce Labs Inc.'
canonical: 'https://feeny.ai/job/senior-software-engineer-python-go-infrastructure-sauce-labs-inc-warsaw-ecmtxavxgc30'
type: 'job'
last_seen: '2026-10-16'
---

# Senior Software Engineer (python/go, infrastructure) at Sauce Labs Inc.

- **Company:** Sauce Labs Inc.
- **Location:** Warsaw, Poland
- **Compensation:** PLN 29k–PLN 33k
- **Posted:** 2026-09-28
- **Last confirmed live:** 2026-10-16
- **Apply:** https://job-boards.greenhouse.io/saucelabs/jobs/8233370

## Job description

About Us:

Sauce Labs is the leading provider of continuous test and error reporting solutions that give companies the confidence to develop, deliver and update high quality software at speed.  The Sauce Labs Continuous Testing Cloud identifies quality signals in development and production, accelerating the ability to release and update web and mobile applications that look, function and perform exactly as they should on every browser, operating system and device, every single time.  Sauce Labs is a privately held company funded by TPG and Riverwood Capital.

The Role:

Sauce Labs seeks a Senior Software Engineer to join the Virtual Device Cloud team, which builds and operates the infrastructure that hosts remote iOS, macOS, Windows, and Linux devices at scale for automated app and browser testing.

This is not a narrow specialist role. We need someone who can move across the whole stack of a distributed system: understand how the pieces fit together, make the system observable enough that we know what's working and can diagnose what isn't, write and structure code with clear boundaries and the right things encapsulated, and be just as comfortable SSHing into a fleet machine to dig into a live problem as designing the system on a whiteboard.

You'll join the Virtual Device Cloud team, which has deep, concentrated strength in macOS, CoreSimulator and APFS internals, and work closely with the Product Manager and with the Test Orchestration and Cloud teams. Your job is to improve testing discipline and cross-platform observability, and to raise delivery cadence, correctness, and visibility across the fleet.

Responsibilities:

- Lead by example - set the team’s standard for testing, observability and delivery through code review and pairing, and bring others along.
- Own the device lifecycle - design and build the services this team owns across the whole device lifecycle, from the image a device boots to its teardown. That covers readiness, session lifecycle and the fleet definitions that plug simulators and VMs into our orchestration layer, whether the fleet runs as pods on Kubernetes with Agones or as VMs on bare-metal and cloud hosts.
- Automate build and release - bring image, browser and payload releases onto CI/CD with automated checks, so a release is a pipeline run rather than a manual procedure. Ship in Go or Python on standard, repeatable deployment paths.
- Make the fleet observable - build and use the observability tooling that answers "is it working as intended, and if not, why not" across the fleet and the image build pipeline, including guests and VMs that fail silently before their payload even starts.
- Fix lifecycle problems for good - root-cause and fix recurring lifecycle regressions with tests and automated release checks, so the same bug does not ship twice.
- Make devices boot and recycle faster - measure and reduce boot, ready and teardown time end to end, and put image and side-disk footprint on a budget.
- Work across teams - work with the Cloud and Test Orchestration teams to propose and land evidence-backed changes to systems you do not own. Keep the contracts between our layers explicit.

Required Skills:

- Solid experience designing, building, and operating distributed systems in production.
- Hands-on experience with Kubernetes, ideally including fleet orchestration such as Agones or a comparable session-fleet model.
- Proven ability to ship production code in Go and/or Python through a standard CI/CD deployment path, including building and maintaining the pipelines themselves.
- Strong observability instincts and experience: metrics, logging, tracing, and building visibility into systems that don't have it yet.
- Hands-on DevOps and Linux/Unix systems experience: able to log into a machine (VM, container host, or bare metal) and work confidently - diagnosing, fixing, and understanding what's actually happening on the box.
- Delivers through the team: a track record of shipping via review and pairing on systems others operate, not alone.

Valued Skills:

- macOS literacy: simctl, launchd, XPC, and how Apple's virtualization/simulator stack fits together.
- Storage and copy-on-write design knowledge (e.g. APFS or similar filesystem internals).
- Working experience across Windows and Linux infrastructure.
- Familiarity with the Apple Virtualization Framework and related tooling (e.g. tart).
- Browser or mobile app test-automation familiarity (Appium, XCTest, WebDriver).
- Has owned a startup, boot or ready-time number for VMs, containers, CI runners or game servers and driven it down.
- Swift: some of our repositories use it, and reviewing them is part of the role.
- Experience building and maintaining OS or VM images with tools such as Packer, tart, Ansible, cloud-init or sysprep.

We are a hybrid workplace that recognizes the importance of flexibility while valuing in-person collaboration and relationship building. As a result, Saucers located near an office location must be able and willing to come into the office. Those hired remotely must be able and willing to travel to an office as required by the specific role.

Please note our [privacy terms](https://saucelabs.com/doc/privacy-policy) when applying for a job at Sauce Labs.

Sauce Labs is proud to be an Equal Opportunity employer and values diversity at our company. We do not discriminate on the basis of race, religion, color, national origin, gender identity/expression/status, sexual orientation, age, marital status, veteran status or disability status.

Security responsibilities at Sauce

At Sauce, we will commit to supporting the health and safety of employees and properties, partnering with internal stakeholders to learn and act on ever-evolving security protocols and procedures. You’ll be expected to fully comply with all policies and procedures related to security at the department and org wide level and exercise a ‘security first’ approach to how we design, build & run our products and services. The compensation range provided below represents the base salary only for a Full-time Employment contract (umowa o pracę) and excludes fringe benefits, potential bonuses, or stock-based compensation (equity). Your individual offer will be determined based on factors such as skills, education, professional experience, and internal equity (alignment with similarly situated team members at Sauce Labs).

Benefits and Perks that we offer include but are not limited to: wellness benefit, commuter benefit, WFH stipend, professional development budget, pension Program (PPK). There is no collective agreement in force at the workplace.  To see more about benefits and perks at Sauce Labs, please check out our careers page at [saucelabs.com/company/careers](http://saucelabs.com/company/careers).

Poland Compensation Range 29 000 zł—33 000 zł PLN

## About Sauce Labs Inc.

## Company Overview
- **One-liner**: Sauce Labs provides an AI-driven, cloud-hosted platform for automated testing of web and mobile applications, enabling enterprises to deliver quality software at scale.
- **Entity Type**: Private (later stage, no recent funding round disclosed)
- **Headquarters**: San Francisco, California, USA
- **Founded**: ~2008 (over 17 years as of 2025, based on company materials)
- **Founders**: Not explicitly named in provided sources; the company was founded by the creators of the Selenium and Appium open-source testing frameworks.

## Core Business
- **Primary industry**: Software testing & quality assurance (QA) – cloud-based test automation platform.
- **Target customers**: B2B – primarily enterprise engineering teams (Fortune 500 examples: Toyota, Walmart, Verizon, Fidelity Investments). Also serves SMBs and individual developers.
- **Mission / purpose**: To power continuous quality across the software development lifecycle, integrating testing from build through production so teams can release with confidence.

## Products & Services
- **Sauce Labs Platform (Core)**: Cloud-based testing infrastructure supporting 9000+ real devices, 1700+ emulators/simulators, and 800+ browser/OS combinations.
- **Sauce AI Agents**: AI-powered test authoring, auto-generation, debugging, and autonomous test maintenance – claims 38% more productivity, 75% reduction in critical issues, and 46% higher ship frequency.
- **Mobile App Testing**: Real device testing for iOS and Android (physical and virtual).
- **Mobile App Distribution & Beta Testing**: Secure enterprise-grade platform for distributing apps internally and gathering user feedback.
- **Visual Testing**: Automated visual regression testing.
- **Error Reporting**: Crash and error detection integrated into the platform, enabling faster resolution (up to 50% faster).
- **Sauce Connect**: Secure proxy tunnels for testing applications in private environments.
- **Virtual Device & Browser Testing**: Scale testing with any framework across thousands of OS/browser combinations.

## Market Standing
- **Valuation/Market Cap**: Not publicly available (private company).
- **Key Metric**:
  - **Annual Revenue**: Not publicly available.
  - **Total Funding**: Not disclosed in provided sources.
  - **Scale**: 8+ billion tests executed, 300,000+ active users, 9000+ real devices available.
- **Notable Investors/Partners**: Not listed in provided sources.
- **Growth Signals**: Continual investment in AI (Sauce AI Agents), expansion of real device farm, enterprise adoption (Fortune 500 customers), and global office presence (San Francisco, Berlin, Warsaw, Gurgaon, London, Austin).

## Competitive Advantages
- **Founding DNA**: Built by the creators of Selenium and Appium – deep open-source credibility and expertise.
- **Full-Lifecycle AI-Quality Platform**: Only platform that combines test authoring, execution, debugging, and production error monitoring with AI agents.
- **Enterprise Security & Compliance**: SOC 3, SOC 2 Type 2, ISO 27001, ISO 27701, FSQS, KY3P, GDPR, CCPA certified.
- **Unmatched Device Coverage**: 9000+ real devices, 1700+ emulators/simulators, 800+ browsers/OS combinations.
- **High Customer Loyalty**: Trusted by major global enterprises with a 17-year track record.

## Strategic Focus
- **AI-Driven Continuous Quality**: Integrating AI across the entire quality lifecycle – from automated test authoring to failure analysis and actionable insights.
- **Expanding Platform Breadth**: Moving beyond testing to encompass error reporting, visual testing, and mobile app distribution as a unified solution.
- **Scaling Enterprise Adoption**: Continued investment in secure infrastructure and compliance to serve large regulated organizations.

## Why Work Here
- **Work Model**: Remote-flex with regional hubs in San Francisco (HQ), Berlin, Warsaw, Gurgaon, London, and Austin.
- **Culture Values**: Ownership mentality, transparency, constant improvement, ideas over hierarchy, respect individuality.
- **Benefits (U.S.)**: Medical/dental/vision from Day 1, 401k with 25% employer match, flexible time off, equity (stock options for all full-time employees), wellness reimbursements, virtual yoga/meditation, parental leave top-up.
- **International Benefits**: Generous vacation accrual (non-U.S.), language learning offerings (EMEA/APAC), RRSP matching (Canada), local statutory benefits.
- **Engineering Culture**: Emphasis on innovation, testing new ideas, and supporting professional growth; no strict dress code; collaborative environment.

## Sources
1. [Sauce Labs Website](https://saucelabs.com/)
2. [Sauce Labs Careers](https://saucelabs.com/careers)
3. [Sauce Labs Greenhouse Job Board](http://job-boards.greenhouse.io/saucelabs)
4. [Sauce Labs Company Factsheet (Dec 2025)](https://assets.ctfassets.net/vrc8wif0t20g/256hJJBbXS0dwOBbaNPsLB/9bcb54455a7f6bfd58eca350f4db1002/Sauce_Labs_Company_Factsheet_-_Dec_2025.pdf)

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