Software Engineer, Data Runtime

As a Software Engineer III (L3) on Data Runtime, you'll design and build the systems that execute every query at Mixpanel. You'll contribute to the technical design for complex distributed-systems projects, from prototype to global rollout, on initiatives like elastic query compute, the distributed file cache, columnar storage internals, and compaction.

Responsibilities

Design and build the systems that execute every query at Mixpanel; Contribute to the technical design for complex distributed-systems projects, from prototype to global rollout; Work on initiatives like elastic query compute, the distributed file cache, columnar storage internals, and compaction; Partner with peer infrastructure teams (Query Serving, Streaming, Data Foundation) and product teams (Core Analysis, AI-powered experiences) on shared architecture; Influence the technical direction of the compute layer that Mixpanel's AI-first future runs on

Requirements

Bachelor's degree in Computer Science, a related field, or equivalent practical experience; 3+ years of professional software engineering experience building and operating data infra/backend systems, with a track record of shipping quality work quickly; A solid foundation in distributed systems or data infrastructure, and the drive to go deep; Experience owning a project or significant component end to end: driving the design, building it, shipping it, and running it in production; Strong technical communication, especially in writing, e.g., design docs, code review, async discussion across a distributed team; Sound judgment in technical tradeoffs, informed by real lessons from operating systems in production; High ownership and accountability; A desire to be at the forefront of the infrastructure powering AI-first analytics at thousands of companies

Nice to have

Languages: Go, C/C++, Python, and SQL; Distributed systems: sharding/partitioning, replication, distributed scheduling, work fanout/merge, consistent hashing; Storage & query engines: columnar formats (Arrow/Parquet or in-house equivalents), indexing, and compression; Caching: distributed file/block caches, admission and eviction policies, tiered storage; Performance engineering: profiling (pprof, perf), concurrency, memory management, benchmarking; Cloud & infra: GCP (GCS, GKE, Spanner) or equivalent AWS/Azure, Kubernetes; Reliability: observability (metrics, tracing, logging), SLOs, incident management; AI-augmented engineering: LLM tooling to accelerate development, triage, and operations

Benefits

Comprehensive Medical, Vision, and Dental Care; Mental Wellness Benefit; Generous Vacation Policy & Additional Company Holidays; Enhanced Parental Leave; Volunteer Time Off; Additional US Benefits: Pre-Tax Benefits including 401(K), Wellness Benefit, Holiday Break