AI Product Focus - Senior Full Stack / Rails Engineer (Boston) jobs in United States
cer-icon
Apply on Employer Site
company-logo

Yuma AI (YC W23) · 4 weeks ago

AI Product Focus - Senior Full Stack / Rails Engineer (Boston)

positionBoston, MA
timeFull-time
remoteOnsite
senioritySenior Level
date5+ years exp

Yuma AI is building a next-generation orchestration platform that deploys autonomous AI agents dedicated to customer support in e-commerce. The Senior Full Stack / Rails Engineer will play a foundational role in architecting and scaling Ruby on Rails applications, managing AI systems, and contributing to product iterations that directly impact user experience.

Artificial Intelligence (AI)Customer ServiceE-CommerceGenerative AISoftware

Responsibilities

Architect, build, and scale large Ruby on Rails applications
Own major systems within our Rails API, including performance, reliability, and maintainability
Manage PostgreSQL at scale: schema design, indexing, performance diagnostics
Maintain and optimize Redis + Sidekiq pipelines for high-throughput workloads
Lead backend-heavy feature projects, from design to deployment
Integrate, evaluate, and iterate on LLM providers and models
Design systems that manage non-deterministic model outputs safely and predictably
Build and own A/B tests, eval pipelines, and agentic workflows
Optimize for latency, reliability, and cost across LLM-heavy features
Contribute directly to prompts, agents, and AI system architecture
Collaborate tightly with founders and engineers to define product requirements
Jump into frontend (Next.js/React) when needed to ship features end-to-end
Run rapid product iterations: fast feedback loops, experimentation, data-driven decisions
Maintain a high bar for product quality while optimizing for speed of execution

Qualification

Ruby on RailsPostgreSQLLLM integrationRedisNext.js/ReactProduct iterationTeam collaborationProblem-solving

Required

5–10+ years of experience building and scaling production Rails applications
Rails has no secrets for you: you know how to ship quickly and safely
You are pragmatic: you make thoughtful trade-offs that maximize user value and iteration speed
You naturally take ownership and thrive in high-velocity environments
You have recent, hands-on experience with LLMs and already use AI in your day-to-day workflow
You're comfortable navigating ambiguity, experimenting, and working with non-deterministic systems
You can contribute across the stack when needed (backend-first, but not backend-only)
You deeply care about product quality, speed, and delivering a great user experience

Benefits

Competitive compensation based on experience and stock options

Company

Yuma AI (YC W23)

twittertwittertwitter
company-logo
Yuma is the most advanced AI platform built for e-commerce.
dateFounded in 2023
location
New York, New York, USA
people-size11-50 employees
web-link
https://yuma.ai

Funding

Current Stage
Early Stage
Total Funding
$9.3M
Key Investors
Y Combinator
2024-10-30Seed· $5M
2023-12-21Seed
2023-04-05Pre Seed· $0.5M

Leadership Team

leader-logo
Guillaume Luccisano
Founder & CEO
linkedin
leader-logo
Andrew Burkard
Founding Engineer
linkedin

Recent News

Observer
A.I. Agents Are Changing How Retailers Hire Holiday Season Workers
2024-11-27
Pioneer Fund
Pioneer Fund Portfolio
2023-11-20
Crunchbase News
Y Combinator’s Most Recent Winter 2023 Batch Shows A Shift To AI, DevTools And B2B
2023-04-12
Company data provided by crunchbase