EngineeringOn-site

Software Engineer, Backend

Braintrust · On-site

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Last seen by MeritLog September 8, 2026Source: AshbySource version: ashby-public-job-posting-v1

MeritLog read this listing from Braintrust's Ashby job board and last checked it on September 8, 2026.

Source: the employer's Ashby job board. Open the original listing for current details.

Job details

Work model: On-site
Salary: Not listed by source
Location: San Francisco
Occupation: Software Developers(O*NET 15-1252.00)
Company website: braintrust.dev

Hiring context

How this role compares at Braintrust

Braintrust has 26 live roles in MeritLog’s catalog across 5 job families, and 12 of them are in engineering. 1 of those listings publish a pay range, a disclosure rate of 4%.

Braintrust concentrates this hiring in:

Counted across the job boards MeritLog tracks, at the time this page was served. Pay comparisons use only listings that publish a complete range in the same currency and period.

What the role asks for

What you'd do

Design and ship features that give users deep insight into their LLM usage and performance.
Build from scratch the unifying layer that proxies, caches, and normalizes calls across OpenAI, Anthropic, Gemini, and every other provider our customers depend on.
Develop and evolve robust, efficient open source libraries for tracing and evaluating LLM calls inside customer applications. Check out our SDKs https://github.com/braintrustdata
Build highly available real-time data pipelines to ingest, store, and query large volumes of structured and semi-structured AI usage data.
Bundling and uploading javascript and python code snippets to be used as online, on-demand function calls for LLM workflows.
Support for parsing and uploading attachments from LLM multimodal outputs into long term storage.
Role-based access controls and data retention policies for enterprise use cases.
5+ years of backend engineering experience across multiple parts of the stack
Strong systems thinking: you’ve owned or contributed to infrastructure projects and know how to design for scale, uptime, and data integrity
Proficient in modern backend technologies (e.g., Node.js, Go, Python, Rust, Postgres, Redis, Terraform, Docker, AWS)
Experience with observability tooling (e.g., Grafana, Prometheus, Datadog, or similar) and a passion for making systems operable, available and rock solid.
Comfortable with ambiguous problems and excited to partner across the company to ship impactful work
Clear communicator who documents decisions, shares context, and helps lift the team

Parsed by MeritLog from the employer’s own posting. The full description follows below.

Job description

ABOUT THE COMPANY Braintrust is the agent observability platform. By actively applying intelligence to agent traces and automatically surfacing the most critical patterns, Braintrust gives teams the visibility to understand how agents behave in production and the tools to improve them. Teams at Notion, Stripe, Box, OpenAI, and Cloudflare use Braintrust to trace their agents, find the issues in their observability data, and run evals that tell them how to improve. ABOUT THE ROLE We’re looking for a backend engineer who’s excited to build the infrastructure behind cutting-edge AI development tools. Under the hood, Braintrust is a real-time, high-availability data platform that operates in both SaaS and self-hosted environments. You’ll help scale our ingestion pipelines, evolve our open source libraries, and ensure everything runs reliably, observably, and fast. If you thrive in a fast-paced environment and enjoy solving hard systems problems with a product mindset, we’d love to work with you. WHAT YOU'LL DO As a backend engineer at Braintrust, you’ll help build the core platform powering LLM-native development: - Design and ship features that give users deep insight into their LLM usage and performance. - Build from scratch the unifying layer that proxies, caches, and normalizes calls across OpenAI, Anthropic, Gemini, and every other provider our customers depend on. - Develop and evolve robust, efficient open source libraries for tracing and evaluating LLM calls inside customer applications. Check out our SDKs https://github.com/braintrustdata - Build highly available real-time data pipelines to ingest, store, and query large volumes of structured and semi-structured AI usage data. You will also collaborate closely with our product engineers to ship polished, end-to-end features that solve real problems for our customers, such as: - Bundling and uploading javascript and python code snippets to be used as online, on-demand function calls for LLM workflows. - Support for parsing and uploading attachments from LLM multimodal outputs into long term storage. - Role-based access controls and data retention policies for enterprise use cases. IDEAL CANDIDATE CREDENTIALS - 5+ years of backend engineering experience across multiple parts of the stack - Strong systems thinking: you’ve owned or contributed to infrastructure projects and know how to design for scale, uptime, and data integrity - Proficient in modern backend technologies (e.g., Node.js, Go, Python, Rust, Postgres, Redis, Terraform, Docker, AWS) - Experience with observability tooling (e.g., Grafana, Prometheus, Datadog, or similar) and a passion for making systems operable, available and rock solid. - Comfortable with ambiguous problems and excited to partner across the company to ship impactful work - Clear communicator who documents decisions, shares context, and helps lift the team BENEFITS INCLUDE - Medical, dental, and vision insurance - Daily lunch, snacks, and beverages - Flexible time off - Competitive salary and equity - Wifi & cellphone stipend EQUAL OPPORTUNITY Braintrust is an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.

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