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Software Engineer, Agent Builder

Join Sierra as a Software Engineer to develop innovative AI agent solutions for top global brands.

Location
San Francisco, CA, United States
Compensation
Not disclosed
Level
mid
Type
full time · On-site

Posted by employer 1 day ago

First seen on Joblaze 1 hour ago

Last verified on the company career page 1 hour ago

Apply at Sierra → Save job Scanned from sierra.ai

Skills & Technologies

TypeScript AI/ML Go Flexible on stack

What you'll build

  • Craft a simulation platform for AI agents
  • Create no-code tools for AI agent management
  • Adapt software development methodologies for AI agents
  • Accelerate agent creation using generative tools
  • Build self-improving systems based on interactions

Must have

  • 4+ years hands-on experience building production products
  • Experience building and shipping full-stack solutions
  • Degree in Computer Science or related field

Nice to have

  • Experience building AI-powered products
  • Sharp eye for design
  • Experience with Go and TypeScript
  • Experience building developer tooling
  • Leadership experience on technical projects

AI in the day-to-day

We accelerate agent creation using generative tools like Cursor and Claude Code.

Requirements

Experience
4+ years
Education
Bachelor's degree

Not disclosed in this posting: compensation, visa sponsorship.

Benefits

Retirement plan dependent on country of employment Discretionary benefit stipend Medical, Dental, and Vision benefits Flexible (unlimited) paid time off Free alphorn lessons Lunch and Snacks Fertility and family building benefits Life Insurance and Disability Benefits Parental Leave

Joblaze summary

In the role of Software Engineer for Agent Builder at Sierra, the individual will focus on developing and refining AI agent simulation platforms, content management tools, and the agent development lifecycle. Key skills include full-stack development, experience with AI-powered products, and familiarity with languages like Go and Typescript. This position is ideal for someone with over four years of hands-on experience in building production systems, particularly those who thrive in a high-autonomy environment. Sierra emphasizes a culture of craftsmanship and customer obsession, making it a fitting place for those who value quality and impact.

Joblaze insights

  • Listed today — first seen on Joblaze October 23, 2026. Last confirmed on Sierra's careers page October 23, 2026.
  • This exact title is also open at 1 other location at Sierra: San Francisco, CA.
  • AI/ML appears in 53.8% of 478 comparable mid ai/ml roles in United States; Go appears in 13% of 478 comparable mid ai/ml roles in United States.

Quick facts

Is the Software Engineer, Agent Builder role remote?
No — this is an on-site role in San Francisco, CA, United States.
How much experience is required?
At least 4 years of relevant experience for this Software Engineer, Agent Builder role.
Where is the role based?
Sierra is hiring for this position in San Francisco, CA, United States.
What's the tech stack?
Joblaze extracted these technologies from the posting: AI/ML, Go, TypeScript.
What seniority level is this role?
Sierra targets mid-level candidates for this position.
Is this full-time or contract?
Full-time for this Software Engineer, Agent Builder role at Sierra.

From the original posting

What you’ll do

  • Simulation & Benchmarking: How can we craft a simulation platform to test AI agents against every real-world scenario imaginable? (See 𝜏-Bench)

  • Content Management: How do we create intuitive, no-code tools that allow anyone to guide and test AI agents?

  • Agent Development Lifecycle: How do we adapt traditional software development methodologies to accommodate AI agents’ non-deterministic behavior, natural language interactions, and reliance on large language models? (See Sierra’s ADLC)

  • Generative Agent Development: How do we accelerate agent creation using generative tools like Cursor and Claude Code? Can we build self-improving systems based on real-world interactions, customer-driven feedback, and self-play?

What you'll bring

  • A passion for being on the frontier of AI products.

  • Motivation and high-agency to drive outcomes - we have a high-autonomy culture and each team member has lots of agency to overcome obstacles and achieve customer impact.

  • Alignment to our company values throughout your work, notably finding a balance between Craftsmanship, Customer Obsession, and Competitive Intensity.

  • 4+ years hands-on experience building production products and systems.

  • Experience and comfort to build and ship full-stack solutions.

  • Degree in Computer Science or related field, or equivalent professional experience.

Even better...

  • Experience building AI-powered products.

  • A sharp eye for design.

  • Experience with Go and Typescript.

  • Experience building developer tooling, programming languages, or databases.

  • Leadership experience on technical projects or teams.

Our values

  • Trust: We build trust with our customers with our accountability, empathy, quality, and responsiveness. We build trust in AI by making it more accessible, safe, and useful. We build trust with each other by showing up for each other professionally and personally, creating an environment that enables all of us to do our best work.

  • Flexible (unlimited) paid time off

  • Life insurance and disability benefits

  • Retirement plan dependent on country of employment

  • Parental leave

  • Fertility and family building benefits through Carrot

  • Free alphorn lessons

Standard company text repeated across Sierra's postings is omitted here.

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