Software Engineer, Full Stack (Agentic AI)

About the role

Sift is the data infrastructure platform for hardware engineering teams. Sift turns high-frequency telemetry into engineering insights for mission-critical systems. Teams use Sift to build and operate rockets, satellites, autonomous vehicles, energy systems, defense platforms, and more. Founded by former SpaceX engineers who built the tools behind Dragon and Starlink, Sift is building the data infrastructure to herald the AI era for physical systems.

Responsibilities

• Talk directly to customers to understand how they review their machines, decide what to build, and own it from first MVP through every iteration after it ships.
• Design, ship, and operate agentic systems that reason over large-scale time-series data and hardware domain context.
• Build everything around the model that makes agents dependable: tool design, context management, code execution environments, evaluation, and observability.
• Develop and maintain Sift’s MCP server, the tool surface that lets both our agents and our customers’ AI tools query telemetry directly.
• Build the frontend surfaces where Sift Agents live, and make them feel great.
• Design and implement the APIs that power our agentic capabilities.
• Run agents reliably at scale, both in the cloud and on-prem.
• Build evaluation suites that measure whether agents actually help engineers, and instrument quality, latency, cost, and failure modes in production.
• Integrate and assess frontier models across providers.

Requirements

• 3+ years of professional software engineering experience.
• Get excited about owning a product area: talking to customers, deciding what to build, and shipping it.
• Built frontend web applications with technologies like React, NextJS, or similar.
• Built APIs (REST, gRPC, etc.) or backend services with technologies like Go, Python, Rust, or similar.
• Curious about new AI products: you try new agents, models, and features as they ship, and have opinions about what makes them good.

Qualifications

• If this role excites you, apply even if you don’t check every box.
• Bonus Points: Shipped products to users at scale: large data volumes, significant active user counts, or deep technical complexity.
• Shipped LLM-powered features.
• Built agentic systems: multi-step tool use, planning loops, context management, and evals.
• Worked with sandboxed or isolated execution of generated code.
• Operated services in production (Kubernetes, observability, incident response).
• A personal ecosystem of AI dev tooling: custom agents, skills, scripts, or workflows built to ship faster.
• Built internal agentic tooling that accelerates an engineering org.

Skills

• Web frontend & backend: ECharts, Go, gRPC, PostgreSQL, Protobuf, Radix, React, Redux, and TypeScript.
• Data: Arrow, DataFusion, Flink, Parquet, and Rust.
• Infrastructure: Argo CD, AWS, Docker, GitHub Actions, Grafana, Kubernetes, Kustomize, Linux, Prometheus, and Terragrunt.

Benefits

• Salary range: $150,000 - $200,000 per year.
• Plus equity and benefits.

Pay

• $150,000 - $200,000 per year.

Schedule

• Full-time.

Location

Sift’s headquarters is in Marina Del Rey, CA (Next to LAX). We collaborate in person twice a week—on Mondays and Thursdays—and come together for a full week every two months. We are open to relocating candidates to LA or working from our San Francisco office for the right candidate.

Engineering at SIFT

You'll have the opportunity to help evolve and scale our platform because we're still in the early stages of building the product. Relevant technologies include: Web frontend & backend, Data, Infrastructure.

EEO Statement

Sift is committed to providing equal employment opportunities to all individuals without regard to race, color, religion, sex, national origin, age, disability, veteran status, genetic information, sexual orientation, gender identity, or any other characteristic protected by law. We will consider for employment qualified applicants with criminal histories consistent with applicable laws.