Senior Fullstack Engineer jobs in United States
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Siena AI · 1 month ago

Senior Fullstack Engineer

positionCanada
timeFull-time
remoteRemote
senioritySenior Level
date5+ years exp

Siena AI is creating an operating system of AI agents to enhance customer experience across various touchpoints. As a Senior Fullstack Engineer, you will own projects end-to-end, developing features for their AI-powered customer support automation platform while collaborating with product and engineering teams.

Artificial Intelligence (AI)E-CommerceEnterprise SoftwareMachine LearningSoftware

Responsibilities

Design, build, and maintain scalable features across the full stack (frontend, backend, and infrastructure)
Collaborate closely with Product to break down scope and deliver in iterative, high-impact releases
Work on an AI-first product, integrating cutting-edge LLM capabilities into enterprise customer support workflows
Solve complex engineering challenges, from optimizing API performance to refining microservices architecture
Maintain and improve our cloud infrastructure (AWS) with a DevOps mindset
Share knowledge and mentor teammates, fostering a strong engineering culture

Qualification

Node.jsReactTypeScriptAWSPostgreSQLRedisMicroservices architectureCI/CD pipelinesPythonEvent-driven architectureNext.jsInfrastructure as Code

Required

5+ years of software engineering experience in Node.js, React, TypeScript, and Express
Solid experience with cloud environments (AWS – Fargate, Lambda, EC2, SQS)
Strong database skills with PostgreSQL and Redis
Familiarity with CI/CD pipelines (CodePipeline, GitHub Actions, or similar)
Product-focused mindset—you think beyond just code and care about business impact
Deep experience in microservices architectures and scalable systems

Preferred

Experience with Next.js and LLM integrations
Infrastructure as Code (CDK, Terraform)
Python programming skills
Event-driven architecture experience
Background in customer support software

Benefits

Learning budget. If you're growing, so are we.
Everyone gets premium accounts (ChatGPT, Claude, Perplexity Pro, Cursor, Lovable) plus a quarterly budget for new tools.

Company

Siena AI

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Siena AI is the creator of an autonomous chat platform that aims to blend human empathy and intelligent automation.
dateFounded in 2022
location
San Francisco, California, USA
people-size11-50 employees
web-link
https://siena.cx

Funding

Current Stage
Early Stage
Total Funding
$11.05M
Key Investors
Sierra VenturesGapMinder VC
2024-09-01Seed· $6M
2023-11-16Seed· $4.7M
2020-09-28Pre Seed· $0.35M

Leadership Team

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Andrei Negrau
ceo, founder
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Recent News

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Company data provided by crunchbase