Senior Software Engineer, Full Stack (Agentic AI)

Telemetry Today LLC; San Francisco (CA); Hybrid; USD 180,000 - 230,000; Full time

Benefits offered by this job

Equity

Benefits

Relocation assistance

Job summary

Sift is seeking a senior software engineer to own a product area for the Sift Agents platform. You will work with customers to define workflows, ship agent capabilities, and scale agented systems across frontend and backend components.

You will design tool interfaces, memory management, and evaluation suites, while collaborating on models and orchestration for cloud and on-prem deployments. This role emphasizes ownership and customer-facing impact.

Qualifications

• Have 8+ years of professional software engineering experience.
• Own a product area: talk to customers, decide what to build, ship it.
• Have built frontend web apps with React/NextJS or similar.
• Have built APIs or backend services with Go, Python, Rust or similar.

Responsibilities

• Talk directly to customers and partner with product to turn real review workflows into agent capabilities: generating dashboards, writing analysis scripts, and surfacing insights buried in their telemetry.
• 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 interfaces, sandboxed execution, context and memory management, and guardrails.
• Develop and maintain Sift’s MCP server to query telemetry directly for agents and customers’ AI tools.
• Work across the whole stack to deliver end-to-end capabilities.
• Build frontend surfaces where Sift Agents live and ensure a great user experience.
• Design and implement APIs powering agentic capabilities and run agents reliably at scale (cloud and on-prem).
• Create evaluation suites to measure quality, latency, cost, and failure modes in production.
• Integrate frontier models across providers.

Skills

React

NextJS

Frontend development

REST APIs

gRPC

Go

Python

Rust

Backend services

Kubernetes

Observability

Incidents response

Time-series data

Front-end & back-end integration

Tools

Go

Python

Rust

React

NextJS

gRPC

PostgreSQL

Protobuf

Kubernetes

Job description

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.

About the Role

Hardware programs generate far more telemetry than any team can review by hand. Sift Agents is our answer: AI agents that work alongside hardware engineers, investigating anomalies, reviewing test and flight data, and answering in minutes questions that used to take a day of scripting.

This role comes with real product ownership and autonomy. You will 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. The surface area is wide: one day you might be polishing the frontend micro-interactions that make the chat experience feel great, the next you might be writing the Kubernetes scaling logic that orchestrates agent workloads. We’re heavy users of frontier agentic products ourselves and have strong opinions about what makes them great. Sift Agents is where we put those opinions to work.

This is a product engineering role, not a research role. Most of the work is the hard part of making agents dependable: tool design, context management, code execution environments, evaluation, and observability.

In This Role, You'll:

Talk directly to customers and partner with product to turn real review workflows into agent capabilities: generating dashboards, writing analysis scripts, and surfacing insights buried in their telemetry

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 interfaces, sandboxed execution for agent-generated code, context and memory management, custom compaction algorithms, opinionated skills, and guardrails

Develop and maintain Sift’s MCP server, the tool surface that lets both our agents and our customers’ AI tools query telemetry directly

Work across the whole stack

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

The Skillset You'll Bring:

Have 8+ years of professional software engineering experience

Get excited about owning a product area: talking to customers, deciding what to build, and shipping it

Have built frontend web applications with technologies like React, NextJS, or similar

Have built APIs (REST, gRPC, etc.) or backend services with technologies like Go, Python, Rust, or similar

Are curious about new AI products: you try new agents, models, and features as they ship, and have opinions about what makes them good

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

Designed tool ecosystems for agents, including MCP

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

A background in time-series data, scientific computing, or hardware test and telemetry

Built internal agentic tooling that accelerates an engineering org

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: 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

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 orworking from our San Franciscooffice for the right candidate.

Salary range: $180,000 - $230,000 per year. Plus equity and benefits.

U.S. Person Required: Must be a U.S. citizen, lawful permanent resident, or protected individual such as an asylee or refugee in compliance with ITAR (International Traffic in Arms Regulations) / EAR (Export Administration Regulations) regulations.