Senior Software Engineer, Ad Platform

About Wurl, LLC. At Wurl, our mission is to create innovative technologies and services that help accelerate the shift to streaming. At our core, we are innovators focused on driving the streaming industry forward with technologies that help connect viewers to the right content and ads. Our technology and data-driven solutions help companies reach new audiences, engage high-value viewers, and ultimately increase their revenue. In 2022, Wurl was acquired by AppLovin (Nasdaq: APP), a leading marketing platform, giving our employees the best of both worlds: the dynamic environment of a 150+ person startup as well as the stability of a high-growth public tech company. We invest in providing a culture that fosters passion, drives excellence, and encourages collaboration to drive innovation. Wurl is a fully-remote company that has been globally recognized for our people and technology, having been named a Great Place to Work by Fortune in 2022, 2023, and 2024; an Ad Tech Company of the Year finalist by the UK Business Tech Awards in 2023; a BIG Innovation Awards winner in 2024 and 2025; and the “Innovation in Advertising” winner by the StreamTV Awards in 2024. The Opportunity Wurl is seeking a Senior Software Engineer to build and optimize the high-concurrency Go services powering our real-time advertising platform. We operate at massive scale, handling 100k+ OpenRTB requests per second where latency is measured in single-digit milliseconds. You will be a key contributor to our core engine, ensuring our services thrive under extreme load while providing a strong technical reference point for the team’s Go development practices. Key Responsibilities Technical Execution & Performance Feature Ownership: Lead the design and implementation of complex features within our Go-based ad-serving stack, optimized for high throughput. Systems Optimization: Use pprof and tracer to eliminate bottlenecks; tune memory allocation and goroutine usage to meet aggressive p99 latency targets. Protocol Mastery : Maintain high-speed support for OpenRTB and VAST protocols, focusing on efficient request parsing and validation. Stream Processing : Integrate services with Kafka pipelines and with low-latency data stores to support real-time decisioning. Operational Excellence & Partnership Platform Partnership: Work closely with Platform Engineers to ensure application behavior aligns with infrastructure capabilities, specifically around auto-scaling triggers, networking, and deep observability. Defensive Engineering: Implement reliability patterns (circuit breakers, retries, graceful degradation) to maintain uptime during traffic surges. Production Ownership: Take end-to-end responsibility for services, from initial design through deployment to Kubernetes (EKS) and production monitoring. Team Leadership Architectural Rigor: Lead design reviews, providing critical feedback on system architecture, data modeling, and API design. Mentorship: Grow the team through thoughtful code reviews and informal sessions on Go best practices and distributed systems. Requirements Go Expertise : 5+ years of professional experience building high-scale services in Go, with a deep understanding of internals (GC, scheduling, and memory management). High-Scale Systems: Proven track record of operating distributed systems handling 100k+ RPS. Concurrency: Mastery of goroutines, channels, and synchronization primitives. Domain Context: Experience with OpenRTB, VAST, or similar programmatic advertising technologies preferred. Infrastructure: Practical experience running and debugging services in Kubernetes and AWS environments Mindset: A pragmatic architect who values simple, effective solutions over over-engineered abstractions. Advantageous : Experience with Intercal to create scalable, modern distributed systems. Why Wurl? Go as a First-Class Citizen: Join a specialized environment where performance is the primary feature. Engineering at the Edge: Tackle the unique concurrency and networking challenges that only emerge at the "hundreds of thousands of RPS" threshold. Direct Visibility: See your optimizations immediately move the needle on revenue and the ad experience for millions of global streamers. What We Offer: Competitive Salary & Equity Strong Medical, Dental and Vision Benefits, 100% paid by Wurl Remote first policy Flexible Time Off 10 US Holidays 401(k) Matching Pre-Tax Savings Plans, HSA & FSA Ginger, Aaptiv and Headspace subscriptions for mental and physical wellness OneMedical subscription for 24/7 convenient medical care Paid Maternity and Parental Leave for all family additions Discounted PetPlan and easy at home access to Covid testing with empowerDX $1k Work From Home Stipend to set up your Office Few companies allow you to thrive like you will at Wurl. Join us to revolutionize the way the world watches television while enjoying mentorship, collaboration, and innovation. We encourage all applicants, even those who don’t meet 100% of the requirements, to apply. Passion and potential go a long way here at Wurl. AppLovin provides a competitive total compensation package with a pay for performance rewards approach. Total compensation at AppLovin is based on a number of factors including market location and may vary depending on job-related knowledge, skills, and experience. Depending on the position offered, equity, and other forms of incentive compensation (as applicable) may be provided as part of a total compensation package, in addition to dental, vision, and other benefits. Health Insurance: Medical, Dental, Vision, Life, Disability Retirement Benefits: 401(k) Retirement Plan Paid Time Off: Unlimited Discretionary Time Off Paid Holidays: 10 paid holidays per year Paid Sick Leave: 80 hours per year Method of Application: Apply online Application Window: The application window is expected to close within 30 days of the posting date. All questions or concerns about this posting should be directed to [email protected] . USA Base Pay Range: CA, NY, WA States $176,000 — $264,000 USD USA Base Pay Range: all other States (excludes CA, NY, WA) $160,000 — $240,000 USD AppLovin is proud to be an equal opportunity employer that is committed to inclusion and diversity. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status, or other legally protected characteristics. Learn more about EEO rights as an applicant here . I f you need assistance and/or a reasonable accommodation due to a disability during the application or recruiting process, please send us a request at [email protected]. AppLovin will consider for employment all qualified applicants with criminal histories in a manner consistent with applicable law.  If you’re applying for a position in California, learn more here . 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