Senior Software Engineer, Python jobs in United States
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Hatch · 21 hours ago

Senior Software Engineer, Python

Hatch is on a mission to help people build better sleep habits through innovative smart sleep devices and science-backed content. The Senior Software Engineer, Python will be responsible for developing the application layer for an AI-powered sleep support chat, ensuring it aligns with Hatch's guidance and integrates seamlessly with their device ecosystem.

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H1B Sponsor Likelynote

Responsibilities

Ramp up on the existing FastAPI service and PydanticAI agent architecture
Review the sleep content library, device APIs, and common conversation patterns
Make initial improvements to prompts, validation, or routing logic to stabilize quality
Drive implementation for Phase 2 of the AI Sleep Chat targeting Q2 2026
Build out evaluation and testing systems to validate responses against Hatch’s sleep guidance
Work with sleep consultants to translate their knowledge to deterministic logic and model prompts
Add instrumentation for monitoring, logging, and conversation analytics
Improve reliability and guardrails around model-driven responses
Lead Natural Language Interface project: translate voice/text commands into device API calls
Design and implement multi-agent architecture for command processing pipeline (intent → parameters → CMS lookup → device control)
Build routine creation wizard using LLM-powered recommendations
Establish practical engineering patterns for using LLM APIs (validation, fallbacks, tests, observability)

Qualification

PythonFastAPIPydanticLLM API integrationAsync programmingMonitoringCloud-native architectureObservabilityCommunication skillsCollaborationProblem-solving

Required

4–6+ years professional Python experience
Strong with FastAPI, Pydantic, async programming, and building production services
Experience integrating with LLM APIs (OpenAI, Anthropic, Bedrock, etc.)
Comfortable with prompt design, API orchestration, and response validation
Solid understanding of monitoring, observability, and debugging distributed systems
Experience using hosted model APIs to solve domain problems
Familiarity with intent classification, entity extraction, and multi-turn conversation flows
Ability to build evaluation harnesses and safety checks for model output
Knowing when deterministic logic beats model creativity
Experience with serverless or cloud-native architectures (AWS preferred)
Able to debug issues that involve both model output and device/control APIs
History of shipping features under tight, evolving requirements
Can translate guidance from sleep consultants into rules, prompts, and validation logic
Able to communicate system behavior clearly to product, CX, and business teams
Pragmatic about constraints and tradeoffs

Benefits

100% paid medical, dental, and vision insurance for employees (80% for dependents, including domestic partners)
Meaningful equity —you’re an owner here
401(k) match (no vesting schedule!)
16 weeks of fully paid parental leave
16 free therapy sessions (for you + one other adult in your life)
Financial support for family planning
Remote office + monthly internet reimbursement
Friends & family discounts on Hatch products
Exclusive discounts on travel, entertainment, and top retail brands
And so many more spontaneous perks!

Company

Hatch

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Hatch offers a suite of smart sleep products to help humans of all ages and stages develop and maintain natural healthy sleep habits.

H1B Sponsorship

Hatch 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
2025 (2)
2022 (2)
2021 (1)

Funding

Current Stage
Growth Stage
Total Funding
$27.1M
Key Investors
True Ventures
2020-05-04Series B· $9.8M
2018-09-19Series A· $6.5M
2017-06-13Series A· $3.8M

Leadership Team

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Ann Crady Weiss
Co-founder
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Company data provided by crunchbase