Strong experience in full-stack web applications development
Proficiency in frontend technologies: TypeScript, React, modern CSS
Backend expertise using Python or equivalent languages
Hands-on experience with GCP and Kubernetes deployments
Experience with SQL/NoSQL databases and storage management
Interest in AI systems and creating tools for AI interaction
Bachelor's degree in Computer Science or related field, or equivalent experience
Responsibilities
Build scalable full-stack systems for a large user base
Develop backend API services that support core functionalities
Design high-quality frontend experiences focused on user needs
Architect deployments on GCP and Kubernetes for scalability
Maintain storage backends for high-throughput applications
Own product features from conception to iteration
Collaborate with customers for continuous product improvement
Benefits
Competitive salary and meaningful equity package
Comprehensive medical benefits and generous PTO
Flexible work arrangements
Direct impact on company direction and technical decisions
High ownership with potential for significant career impact
Visa sponsorship available
Full Job Description
The Role
We are looking for a Backend Engineer to own the systems that ingest, evaluate, and serve agent behavior data at production scale. You will work across telemetry ingestion, platform reliability, sandbox infrastructure, and the API surface that customers and integrations build on. Some weeks you will be deep in distributed systems and query performance. Other weeks you will ship a customer-facing feature across backend, APIs, and the data layer. What you'll do:
Own platform scaling, reliability, and latency: caching, retries, and backpressure as customer traffic grows
Optimize sandbox environments for speed, isolation, and cost efficiency
Build high-throughput telemetry ingestion and tune OLAP performance: partitioning, indexing, and query optimization over billions of spans
Own the API surface used by the NeoSigma platform UI, SDKs, MCP server, and customer integrations
Build evaluation pipelines with retry semantics, failure recovery, and tenant-level scheduling
Work directly with customers to debug agent failures and turn those signals into infrastructure improvements
Roll out safely with feature flags, design docs, and production observability
What we look for:
Strong backend engineering experience building and operating production systems under real load
Solid fundamentals in distributed systems, API design, data modelling, and performance
Experience with high-volume telemetry, trace, or event data at scale
Strong intuition for data systems: query patterns, indexing, partitioning, and latency
High ownership mentality: you debug production issues and don't wait for someone else to notice what's broken
Clear communicator across design docs, code reviews, and tradeoff discussions
Bachelor's degree in Computer Science, Engineering, or related field (or equivalent practical experience)
Benefits and perks
Competitive salary plus meaningful equity package
Comprehensive medical benefits and generous PTO
Flexible work arrangements
Direct impact on company direction and technical decisions
High ownership and the opportunity to make a career-defining impact
Visa sponsorship
As a founding member, you'll help define the technical foundation of NeoSigma. Your scope will grow with the company, from owning core systems end-to-end to shaping architecture, hiring, and engineering culture. This role has a natural path toward technical leadership or engineering management as the team scales.
