Join Sierra as a Software Engineer to build AI agents that enhance customer interactions for major brands.
Posted by employer 1 day ago
First seen on Joblaze 1 day ago
Last verified on the company career page 1 day ago
Skills & Technologies
What you'll build
- Create feedback loops and evaluation systems
- Design and ship long-horizon agents
- Build reusable systems and tools
- Solve complex technical problems
- Define Horizon’s architecture and roadmap
Must have
- Experience building and scaling end-to-end production systems
- Strong platform and systems engineering fundamentals
- At least two years of professional software engineering experience
Nice to have
- Experience as a founder or early engineer at a startup
- Experience building distributed systems
- Experience deploying AI and LLM-powered products
Requirements
- Experience
- 2+ years
Not disclosed in this posting: compensation, visa sponsorship.
Benefits
Joblaze summary
In this role, the Software Engineer at Sierra focuses on developing systems that enhance the capabilities of long-horizon AI agents, enabling them to learn and improve over time. Key skills include proficiency in Python, TypeScript, or Go, along with a strong foundation in platform and systems engineering. This position is ideal for someone with at least two years of experience who thrives in dynamic environments and has a builder's mindset. Sierra emphasizes a culture of trust and customer obsession, making it a fitting environment for engineers who value collaboration and craftsmanship.
Joblaze insights
Quick facts
- Is the Software Engineer, Horizon role remote?
- No — this is an on-site role in San Francisco, CA, United States.
- How much experience is required?
- At least 2 years of relevant experience for this Software Engineer, Horizon 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: Go, Python, React, 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, Horizon role at Sierra.
From the original posting
What you’ll do
Build primitives for self improvement: Create the feedback loops, evaluation systems, memory, signals, and decisioning infrastructure that help long-running agents learn from outcomes and improve over time.
Build the future of long-horizon agents: Design and ship agents that pursue complex business outcomes over days, weeks, or months across voice, SMS, email, and other channels.
Turn 0-to-1 work into a platform: Identify patterns and build reusable systems, abstractions, and tools that make future Horizon agents faster and easier to launch.
Solve technically complex problems: Build across orchestration, integrations, data, memory, signals, decisioning, observability, and multi-channel engagement.
Shape the Horizon product: Surface platform gaps through hands-on implementation and work with product and engineering to define Horizon’s architecture and roadmap.
Create a clean path beyond the POC: Once a solution is validated, translate what you built into durable product capabilities and enable a successful handoff for continued deployment.
What you’ll bring
Experience building and scaling end-to-end production systems.
Strong platform and systems engineering fundamentals.
The ability to move between customer problems, product design, and technical implementation.
Strong technical judgment in ambiguous, fast-changing environments.
A builder’s mindset and the ability to take products from zero to one.
Comfort working directly with customers and understanding complex business processes.
High agency, adaptability, and clear communication.
At least two years of professional software engineering experience
Experience with Python, TypeScript, or Go and React.
Even better
Experience as a founder, founding engineer, or early engineer at a startup.
Experience building workflow, orchestration, event-driven, or distributed systems.
Experience developing platforms or reusable infrastructure for other engineers.
Experience building or deploying AI and LLM-powered products.
Familiarity with enterprise integrations, APIs, data pipelines, and systems of record.
Experience working in complex industries such as financial services or healthcare.
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.