The Browser Company · 1 week ago
Staff Software Engineer, AI Foundations
United States
Full-time
Remote
Senior Level, Lead/Staff
$225K/yr - $275K/yr
6+ years expThe Browser Company is building a better way to use the internet through innovative browser technology. As a Staff Software Engineer on the AI Foundations team, you will create systems and tools that enhance product experiences and enable rapid development of AI-driven features.
Digital MediaInternetWeb Browsers
Responsibilities
Own and evolve the AI Foundations systems that integrate LLM outputs into product experiences, partnering closely with ML and Product Engineers to turn model output into reliable, production-quality features
Build and operate infrastructure for evals and prompt engineering, making it simple for teams to author, run, and interpret evals while safely versioning and rolling out prompts via tools, direct feedback, and product integrations
Orchestrate and optimize LLM usage across the service layer, standardizing formats, streaming, error handling, and cost controls, and closing the loop between evals, auto-tuning, and real-world performance
Partner across product and infrastructure teams to define requirements, SLAs, and APIs for AI features, turn dogfooding and live usage into evaluable scenarios, and build clear workflows and documentation that help teams ship confidently
Elevate engineering quality and team impact by leading high-impact projects, improving reliability and observability across systems, mentoring engineers, and owning planning and on-call for AI Foundations services as needed
Build a unified experience for editing prompts, running queries, and launching evals, with telemetry, dashboards, and alerts to monitor performance and catch regressions early
Develop tooling that surfaces expected vs. actual behavior, clusters failures, and automatically refines prompts to improve routing, tool use, and response quality
Connect evals to dogfooding data for reproducible playback and analysis, enabling insight into behavior of our complex AI systems
Qualification
Required
6+ years of experience building and leading high-craft software systems, with deep expertise in backend or infrastructure engineering
Hands-on experience building with LLMs and integrating AI outputs into production systems; curiosity to go deep on how models work without doing model training
Proven ability to design, ship, and operate large-scale, reliable systems that support rapid experimentation and iteration. You've worked on large, complex codebases and understand how to improve systems to make them easier to understand, debug, and maintain
Strong technical leadership and mentoring experience; you elevate engineering quality through thoughtful code reviews, clear communication, and pragmatic execution
You're pragmatic, motivated by nebulous problems, and excited to work in a startup environment with quick product validation cycles
We're primarily focused on hiring in North American time zones and require that folks have 4+ hours of overlap time with team members in Eastern Time Zone
Benefits
A wide range of perks and benefits designed to support you, your family and to help you engage with your local community.
Company
The Browser Company
The Browser Company is a software company that designs and operates web browser for internet users.
51-200 employees
H1B Sponsorship
The Browser Company has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2023 (1)
2022 (1)
Funding
Current Stage
Growth StageTotal Funding
$68MKey Investors
Pace Capital
2025-09-04Acquired
2024-03-21Series B· $50M
2022-05-25Series A
Leadership Team
Adena Bauer
Membership Lead
Tara Feener
Head of Dia
Recent News
2026-01-09
2026-01-09
2026-01-07
Company data provided by crunchbase