Senior Backend Engineer (Poland)

Webshare is an affordable and powerful self-serve proxy infrastructure. Built for prosumers, solopreneurs, and growing businesses, it delivers enterprise-grade capabilities without the premium price tag or the sales calls. 
That same principle shapes the team: lean, flat, and async by default, where clarity and follow-through matter more than hierarchy.

Webshare is an enterprise-grade proxy platform delivering fast, self-service access to over 80 million global IPs across 195 countries. Built for extreme reliability with 99.97% network uptime, it enables tens of thousands of businesses worldwide to run large-scale web scraping, market research, and automated data collection through dev-friendly APIs.

• Build and maintain high-performance backend APIs that power Webshare’s proxy infrastructure.
• Own the design and delivery of services that handle billions of requests daily.
• Collaborate in a highly autonomous team to scope, plan, and execute work with minimal meetings.
• Investigate and resolve production issues across distributed systems.
• Balance speed and quality, by identifying which trade-off is better for a particular situation.
• Operate and improve our containerized infrastructure.
• Continuously improve system performance, observability, and cost-efficiency.

• Strong experience in at least one OOP language.
• Ability to work with industry standard AI tools (LLMs), while balancing code quality and speed, but never compromising on reliability and architecture.
• Ability to work in a programming language agnostic environment, you're eager to learn and excited to grow your backend engineering skills, including working with Python.
• Comfortable working in an infrastructure heavy environment.
• Proven experience designing and scaling APIs.
• Familiarity with distributed systems and async architectures.
• Willingness to understand deep networking concepts (BGP, CIDR, ASNs).
• Fluent English (international team).
• Can handle working with a remote team (we’re worldwide).

• Experience with Python.
• Experience with very large datasets.
• Experience with proxies or other networking-related technologies.
• Experience with golang.

• Gross salary: 24 000 - 33 400 PLN/month gross + quarterly KPI-based performance bonus. Keep in mind that we are open to discussing a different salary based on your skills and experience.
• Growth & Learning: 40+ internal learning options, external conferences, mentorship, and year-round knowledge-sharing.
• Health & Well-being: Private health insurance.
• Celebration & Community: Team events, an overseas workation and plenty of ways to mark milestones together.

Webshare is part of Source, a data ecosystem for a world built on intelligence. One of five independent technology companies connected by shared standards, expertise, and a belief in responsible access to web data.

Up for the challenge? Let’s talk!