Senior Full-Stack Engineer - End-to-End, AI Platform

Savo, Inc.; Austin (TX); Hybrid; USD 140,000 - 190,000; Full time

Benefits offered by this job

Comprehensive health, dental, vision

Professional development budget

Company events and retreats

Paid time off and holidays

Job summary

Savo, Inc. seeks a Senior Full-Stack Software Engineer to own significant parts of the platform, from frontend React/TypeScript to backend FastAPI, PostgreSQL, and AWS. You will ship features end-to-end, mentor engineers, and collaborate with product and science to deliver trusted AI-driven insights.

Based in Austin, TX, with 5–10% travel for customer visits, you will shape technical design, improve evals and model behavior, and ensure reliability across a multi-agent system in production.

Qualifications

• 5+ years of professional software engineering experience.
• Strong full-stack ability with React/TypeScript and Python/FastAPI.
• Production systems experience on AWS and PostgreSQL.

Responsibilities

• Own features and components end-to-end across front-end and back-end stacks.
• Lead the technical design of medium-to-large components and data models.
• Drive reliability including observability, error handling, and performance.

Skills

Full-stack development

Mentoring

Code review

Ambiguity handling

AI/ML awareness

Tools

React/TypeScript

Python/FastAPI

PostgreSQL

Redis

LiveKit

AWS

Job description

Who this role is for: This role is for experienced builders with 5+ years of professional experience. You'll own features end-to-end, drive technical design, navigate ambiguity, and mentor other engineers.

About Savo

Savo is building the world's first Savo Human Intelligence Platform™, capturing people's unfiltered words in real time and transforming them into actionable insights. Our AI-powered platform conducts real-time, structured narrative interviews using intelligent voice agents. A multi-agent system extracts behavioral and cognitive signals from spoken language and translates them into scored, evidence-backed intelligence. We replace intuition and anecdote with science-backed human intelligence.

The Role

We're looking for a Senior Full-Stack Software Engineer to own significant parts of the platform that captures human intelligence at scale. You'll work hands-on across our entire stack: React/TypeScript on the front end, and FastAPI, PostgreSQL, Redis, LiveKit, and AWS on the back end. You'll do more than ship features, though: you'll own them end-to-end, from technical design through production, monitoring, and iteration.

This is a high-ownership role. You'll take ambiguous problems, shape the approach, and drive them to shipped, reliable software with minimal guidance. You'll set the bar in code review, mentor earlier-career engineers, and work directly with product and science partners to turn customer problems into solutions, helping decide what to build, not just how. There's a natural path into the science side of what we do: bringing engineering rigor to the NLP and measurement models that turn raw conversation into scored, evidence-backed signal. What we build is a scientific measurement instrument, not just software. The signals it produces have to be trustworthy and defensible. You'll also work on the AI systems at the heart of the product: building and improving evals, tracing model behavior, working with prompts and structured outputs, and helping ensure our multi-agent systems are reliable in production.

You'll do it while working with AI coding tools that are fundamentally changing what small teams can accomplish, and help define what “engineering” means in that world.

This role is based in Austin, TX, with occasional travel (5-10%) for customer visits.

What you'll do

BUILD AND OWN ACROSS THE STACK

• Own features and components end-to-end across our front-end (React/TypeScript) and back-end (FastAPI, PostgreSQL, Redis) repositories, from design through production
• Lead the technical design of medium-to-large components, making the architecture and tradeoff calls
• Design APIs and data models that hold up as the platform scales
  
  

SHIP CUSTOMER SOLUTIONS

• Own the solutions customers run on Savo end-to-end: Signal Event™ interviews, the participant conversation experience, and the delivery of results
• Partner directly with product and science to turn a customer's problem into a solution, and help shape what we build
  
  

DRIVE QUALITY AND RELIABILITY

• Set engineering standards and raise the bar in code review, including autonomous, agent-based review workflows
• Own the reliability of what you build (observability, error handling, and performance), and help harden the platform for enterprise clients
• Know our workflow deeply and improve it: local development, branching, CI/CD to ECS, and incident response
  
  

LEAD AND MENTOR

• Mentor earlier-career engineers and multiply the team's output
• Turn vague, ambiguous problems into clear plans and shipped software with minimal guidance
• Partner with our data scientists on the measurement and NLP work, bringing engineering rigor to how we validate what we measure
  
  

What we're looking for

• 5+ years of professional software engineering experience, with a track record of owning features or services end-to-end
• Strong full-stack ability: proficient in a modern front-end framework (React/TypeScript preferred) and a back-end language and framework (Python/FastAPI preferred)
• Solid database skills: schema design and working with relational databases (PostgreSQL preferred) in production
• Experience building and running production systems on cloud infrastructure (AWS preferred)
• Comfort with ambiguity and a history of making sound technical design decisions
• Experience mentoring engineers and elevating a team through code review and example
• An AI-native programmer fluent across CLI, IDE, and autonomous agent workflows (Claude Code, Grok Bot, Cursor, Codex, etc.) and how it’s changing the craft.
• Experience in AI engineering with LLM-powered systems, including evals, prompting, structured outputs, model behavior, or agent workflows
  
  

NICE TO HAVE

• Experience with real-time systems, voice (LiveKit or similar), or LLM-powered applications
• Experience making reliability, security, or compliance requirements (SOC 2, GDPR, and similar) drive design decisions
• Interest in or exposure to NLP, psychometric measurement, or data science
• Experience in building MLOps and LLMOps practices

The Core Four

Whatever the role, every Savoan is measured against four core competencies that reflect our values. Role-specific skills matter too, but they're not a substitute for these.

• Curiosity: you habitually ask why, hold strong opinions, and stay genuinely open to overturning them.
• Adaptability: you're energized by change, and do your best work when the goal, the spec, or the priority shifts underneath you.
• Judgment: you thrive in ambiguity, structuring unfamiliar, poorly bounded problems and making the right calls.
• Drive: you make things happen: taking initiative on what matters and owning delivery, without being chased.
• The opportunity to shape the future of Savo Human Intelligence Platform™ at an early, high-growth startup
• Competitive salary and equity package
• Comprehensive health, dental, and vision insurance
• Professional development budget for conferences and continuing education
• A collaborative, innovative environment with direct impact on product direction
• Regular team events and company retreats
• Paid time off and company holidays

Equal opportunity

At Savo, we're committed to building a diverse and inclusive team. We encourage applications from candidates of all backgrounds, experiences, and perspectives who are excited about our mission. Savo is an equal opportunity employer and does not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, age, disability, veteran status, or any other protected characteristic.

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