{"id":949276,"url":"https://alion.io/job/blossom-bh-opco-inc-software-engineer","title":"Software Engineer","company":{"id":669468,"name":"Blossom BH Opco Inc.","domain":"joinblossomhealth.com","url":"https://alion.io/company/joinblossomhealth","size_band":"1-10","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":{"grade":"B","score":83,"open_postings":3,"ghost_share":0,"stale_share":0.667,"repost_share":0,"time_to_fill_p50_days":37,"computed_at":"2026-10-23T05:54:15Z"}},"role":"Backend","role_family":"Backend","seniority":"junior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["New York, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":150000,"max":220000,"currency":"USD","period":"year","gross":null,"usd_annual":220000},"salary_estimate":null,"experience_years_min":2,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AI Agents","optional":false},{"name":"Function Calling","optional":false},{"name":"LLM","optional":false},{"name":"Python","optional":false},{"name":"Structured Outputs","optional":false},{"name":"TypeScript","optional":false}],"status":"live","first_seen_at":"2026-09-14T16:37:30Z","employer_posted_date":"2026-10-21","last_verified_at":"2026-10-23T08:24:27Z","board_verified":true,"closed_at":null,"days_open":38,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":38},"description":"Blossom Health exists to solve the mental health epidemic in America by partnering with psychiatrists to expand access to affordable, timely, clinically-effective mental healthcare. Our AI-native care platform is loved by hundreds of clinicians and thousands of patients.\nWe’re a Series A company with $20M+ raised from Headline, Village Global, and the founders of General Catalyst, Flatiron Health, Sword Health, Grow Therapy, Fay, Elemy, Zip, Blank Street, Assured, Bridge, Birches Health, and Enzo Health.\nWhy you should work here:\nHyper-growth environment: Get firsthand exposure to how a startup scales from 0→1→n, with visibility across product, engineering, and operations\n\nHigh trust and autonomy: You’ll own meaningful projects from day one and shape both technical decisions and product direction. We trust engineers to figure out the best path forward - without micromanagement.\n\nTalent-dense team: Work with a top-percentile team built on mutual respect and admiration, with shared goals, motivations, and vision for the future.\n\nReal impact: Your code will directly improve access to mental health care for thousands of patients and clinicians\n\nWhat we're looking for:\nHighly motivated, ambitious, and capable - looking to tackle a large, meaningful problem area\n\nOwnership mindset - thinking for the long-term and placing the business and our customers first\n\nHigh velocity and high excellence - have a real sense of urgency to move quickly and take pride in the quality of your work\n\nAn explorer - comfortable with ambiguity and autonomy, seeking to answer questions previously unasked, to leap into the unknown\n\nAn optimist - you believe in a tomorrow better than today\n\nA builder - you take joy in bringing new creation to the world, in leveraging technology to make useful things\n\nHumble - you use your gifts in the service of others and understand that success is an output, not an input\n\nWhat you'll do:\nBuild and ship AI-native product experiences used directly by clinicians and patients\n\nDesign and develop LLM-powered systems and agents that automate and augment complex healthcare workflows\n\nOwn AI features end-to-end, from prototyping and experimentation through production deployment, evaluation, and iteration\n\nBuild robust evaluation, monitoring, and feedback systems to continuously improve AI quality, reliability, and performance\n\nWork across models, prompts, tools, retrieval systems, and application infrastructure to solve real-world product problems\n\nMove quickly from emerging AI capabilities to production-ready experiences that deliver measurable value\n\nCollaborate closely with clinicians and engineers to understand complex healthcare workflows and determine where AI can have the greatest impact\n\nYou'll thrive here if you:\nHave a bachelor's degree or equivalent experience in Computer Science or a related field\n\nHave 2+ years of professional software engineering experience outperforming in high-quality environments\n\nHave experience building and shipping LLM-powered applications or AI products in production\n\nAre fluent in Python and/or TypeScript\n\nHave worked with modern LLM APIs, agentic systems, tool calling, retrieval, structured outputs, or similar applied AI patterns\n\nThink rigorously about evals, reliability, latency, cost, and failure modes, not just whether a prototype works\n\nAre comfortable moving across the stack and quickly experimenting with new models, frameworks, and techniques\n\nLove autonomy, ambiguity, experimentation, and ownership\n\nAre authorized to work in the U.S. and excited to be in-person in NYC 5 days a week\n\nBenefits:\nCompetitive salary, equity, growth opportunities\n\nBest-in-class health, dental, and vision insurance\n\nA focus on outcomes, not hours, with unlimited 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