Backend Developer
Location: Wrocław
We're looking for a Backend Developer who wants real impact — on architecture, performance, and how things scale. You'll work with TypeScript/Node.js and Go, build systems that handle real-world traffic, and dive deep into networking, Linux kernel and protocol-level details when needed. We’re a focused, collaborative team that values clarity, ownership, and autonomy. No pointless meetings, no layers of management — just engineers who care about building things right, learning from each other, and keeping systems fast, reliable, and scalable.
If you're into designing efficient APIs, understanding how things behave under load, and making infrastructure decisions that matter — let’s talk.
Role & Responsibilities:
Build and maintain backend services using Go and TypeScript/Node.js.
Optimize system performance, troubleshoot issues, and improve concurrency and latency.
Develop and maintain low-level communication protocols on TCP/TLS/HTTP2 levels.
Implement monitoring tools and collect performance metrics.
Write and optimize complex SQL queries and database operations.
Maintain and improve large, legacy codebases with confidence and attention to stability and scalability.
Job Requirements:
3+ years of professional backend development experience.
Strong skills in compiled languages (Go, C/C++, Java, Kotlin, Rust) and scripting languages (TypeScript/Node.js, Python, Perl).
Proficient with Linux OS and network protocols (HTTP2, TCP, TLS).
Solid understanding of algorithm complexity (Big O notation).
Comfortable working in and maintaining large, legacy codebases.
An Ideal Candidate’s Profile:
Experience with SQL query optimization.
Knowledge of the Linux kernel.
Exposure to very large codebases.
What’s on Offer:
- Flat organizational structure with short decision-making processes that boost your creativity and drive
- A team of experienced and supportive individuals that fosters a friendly work atmosphere
- Professional skill development
- A diverse and inclusive workplace
- Smart working technology
Interested?
We are actively reviewing applications, so apply now! We are looking forward to hearing from you.
- Department
- Research and Development
- Locations
- Wrocław
- Remote status
- Hybrid
How We Work
At Opera, we are committed to ensuring a workspace that is fair, transparent, and free from bias. Bringing together different perspectives fuels innovation, while equal opportunities for individuals from all backgrounds make us stronger, more creative, and more resilient. Creating an atmosphere where everyone is valued for their skills, ideas, and contributions is at the core of how we work. We don’t just embrace differences - we see them as the foundation of how we collaborate, grow, and succeed together.
An International Team 🌏
- Languages spoken
- Countries represented
- Team members
About Opera
Opera is a leading global internet brand with a large and engaged user base of approximately 300 million average monthly active users. Building on 30 years of innovation, starting with our browser products, we are leveraging our brand as well as our massive and engaged user base in order to expand our offerings and our business. Today, we offer users around the globe a range of products and services that include a variety of PC and mobile browsers, our Opera Gaming portals and development tools, our Opera News content recommendation products, our audience extension product (namely the Opera Ads platform) and a number of AI and Web3 products and services. This comprehensive suite of products is designed to meet the diverse needs and preferences of Opera's growing user base.
Headquartered in Oslo, Norway, Opera has a global presence with major hubs in Poland, China, Spain, Scotland, and Sweden, coupled with operations spanning numerous other countries. As a publicly traded company, Opera is listed on the Nasdaq stock exchange under the ticker symbol "OPRA".
Backend Developer
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