Full-Time
Senior Full Stack Engineer
Posted on 8/28/2025
Adonis Technology
201-500 employees
AI-powered RCM automation for healthcare
Compensation Overview
$190k - $210k/yr
New York, NY, USA
Hybrid
 Software Engineering (1) |
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- You bring 5+ years of full-stack engineering experience with modern technologies including Python, TypeScript/React, and PostgreSQL.
- You have strong systems design expertise, with a track record of architecting scalable and efficient software.
- You have a strong product sense—able to empathize with users, prioritize MVPs, and identify what should come next.
- You value smart speed—shipping quickly without compromising long-term architecture.
- You’re comfortable with ambiguity, enjoy filling in gaps, and prototype to validate ideas before committing to full builds.
- You have excellent problem-solving skills, attention to detail, and thrive in both independent and collaborative work.
- Experience in analytics tools or health tech is a plus.
- Deep understanding of Python and modern web frameworks, with proven ability to scale client-facing applications.
- Strong foundation in systems design paradigms and tradeoffs.
- Experience with frontend development (React, TypeScript, JavaScript, CSS, web components).
- Experience building CI/CD pipelines using GitHub, GitLab, Bitbucket, or similar.
- Strong knowledge of ORMs and their tradeoffs.
- Architecture & Development: Play a critical role in the design, architecture, and implementation of scalable, robust software solutions across the stack.
- End-to-End Engineering: Prototype and develop web applications with complex interaction patterns, flexible components, and efficient backend systems using Python, TypeScript/React, and PostgreSQL.
- API & Backend Ownership: Build and maintain server-side applications, APIs, and database management systems that power our platform.
- Cross-Functional Collaboration: Partner with Product, Design, Customer Success, and Sales to deliver features that solve meaningful customer problems.
- Technical Leadership: Lead projects, guide technical direction, and act as a systems design expert for complex initiatives.
- Quality & Best Practices: Ensure high standards of code quality through testing, reviews, and modern software engineering best practices.
- Mentorship: Support and mentor junior engineers, raising the technical bar across the team.
- Excellent communication and collaboration skills.
- Familiarity with AWS offerings (EC2, S3, RDS).
- Experience with monitoring tools (e.g., Datadog).
- Active participation in design and product discussions.
- Ability to take initiative and work independently.
Adonis Technology offers a software-as-a-service platform that improves revenue cycle management for healthcare providers by automating claims, speeding reimbursements, and reducing denials. It connects with EHRs, clearinghouses, and insurers so clients can adopt the system without changing existing workflows. AI agents handle repetitive billing tasks and guide claims from submission to adjudication, improving accuracy and speed. The goal is to help healthcare organizations maximize revenue and free clinicians to focus on patient care.
Company Size
201-500
Company Stage
Series C
Total Funding
$93.9M
Headquarters
New York City, New York
Founded
2022
Simplify's Take
What believers are saying
- Achieved 4x revenue growth in 2025 with 130% net retention.
- Raised $40M Series C in 2026, totaling over $95M funding.
- Processes $13.3B claims for 10,000 providers and 3,000 payers.
What critics are saying
- Waystar's 40% market share blocks Adonis from large health systems now.
- Olive AI's 2025 relaunch commoditizes Adonis agents within 12 months.
- CMS No Surprises Act rules obsolete Adonis AI starting January 2026.
What makes Adonis Technology unique
- Adonis deploys AI agents that autonomously resolve claims across 35 EHRs.
- Platform integrates with athenahealth Marketplace for predictive RCM analytics.
- Partnership with Instacart streamlines Medicaid nutrition claims submissions.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
Health Savings Account/Flexible Spending Account
Parental Leave
Commuter Benefits
Unlimited Paid Time Off
Hybrid Work Options
Competitive Equity Packages
Growth & Insights and Company News
6 month growth
↓ -5%1 year growth
↓ -3%2 year growth
↓ -2%Adonis, an AI orchestration platform for healthcare revenue cycle management, has raised $40 million in a Series C round led by Quadrille Capital, with participation from General Catalyst and Bling Capital. The funding brings total capital raised to over $95 million since the company's 2022 founding. Founded in 2022, Adonis achieved more than four times revenue growth in 2025 and net retention above 130%. The company's platform uses AI to monitor revenue cycle issues, recommend actions and autonomously resolve claims for healthcare providers facing rising denial rates and increasing operational complexity. The funding comes amid heightened pressure on healthcare organisations following recent policy changes affecting Medicaid and ACA subsidies. Adonis will use the investment to accelerate product development and expand its presence in the health system market.
Adonis, an AI platform for healthcare revenue cycle management, achieved over 4x revenue growth in 2025 whilst expanding its customer base across provider groups, hospitals and health systems. The company reported net revenue retention exceeding 130% as existing clients deepened platform adoption. The New York-based company addresses mounting challenges in healthcare RCM, where legacy systems struggle with changing payer behaviour and lack real-time visibility. Adonis' platform unifies data and deploys agentic workflows to help teams reduce denials and accelerate cash flow. The company hosted quarterly events at its New York headquarters featuring leaders from Ohio State University Wexner Medical Center, Yale New Haven Health and Johns Hopkins. Its inaugural recognition programme celebrated revenue cycle leaders driving innovation across healthcare.
Adonis has raised a $17.3 million Series A round led by General Catalyst to aid health care providers in managing revenue. This round marks a milestone for Homebrew, as it is their first follow-on investment using their own capital rather than investing on behalf of others. The investment highlights Adonis' strong team and potential to enhance revenue management for large health care clinic networks.
What You Should Know:– Adonis, a prominent revenue cycle technology partner, announced a strategic partnership with Instacart, North America’s leading grocery technology company.– The partnership addresses a crucial aspect of expanding access to healthy foods: efficient billing for nutrition support programs. Instacart Health offers various nutrition-focused initiatives to health plan members, and with this collaboration, Instacart will leverage Adonis’s advanced revenue cycle technology to submit claims for these programs.Claims Billing for Instacart Health Nutrition ProgramsSpecifically, Adonis’s technology will enable Instacart to submit claims in states that offer pathways for nutrition support as part of Medicaid Section 1115 waivers and In Lieu of Services (ILOS) provisions. These provisions allow for innovative approaches to healthcare, including integrating nutrition programs as part of comprehensive care.Through this partnership, Instacart will be able to:Simplify Claim Submissions: Utilize Adonis’s platform to efficiently submit claims across multiple states.Utilize Adonis’s platform to efficiently submit claims across multiple states. Increase Access to Healthy Foods: Expand the reach of Instacart Health nutrition programs to more individuals.Expand the reach of Instacart Health nutrition programs to more individuals. Work with Innovative Health Plans: Strengthen partnerships with health plans that prioritize nutrition support.Strengthen partnerships with health plans that prioritize nutrition support. Drive Operational Efficiencies: Streamline billing processes and reduce administrative burdens.“Through Instacart Health, we want to make it easier for health plans to offer food as a covered benefit, ensuring more people can access the nutritious foods they need to support their health,” said Sarah Mastrocco, Vice President and General Manager of Health at Instacart
A new partnership with Adonis introduces AI-driven revenue cycle solutions to the athenahealth Marketplace, enhancing financial and clinical outcomes for athenahealth customersNEW YORK, Aug. 1, 2024 /PRNewswire/ -- Adonis, a provider of healthcare financial technology, today announced an agreement with athenahealth , Inc. through the company's Marketplace program. As part of the athenahealth® Marketplace , this newly integrated application is now available to athenahealth's growing network of healthcare providers to leverage AI-driven revenue cycle analytics.Adonis Intelligence includes capabilities such as:A new partnership with Adonis introduces AI-driven revenue cycle solutions to the athenahealth Marketplace, enhancing financial and clinical outcomes for athenahealth customers.Alerting and Monitoring: Leverage predictive analytics to detect the most pressing revenue cycle issues, often before they even occur.Leverage predictive analytics to detect the most pressing revenue cycle issues, often before they even occur. Real-Time Dashboards: Easily track the KPIs that matter most when it comes to managing your revenue cycle, from high-level executive dashboards to detailed drill-down reports.Easily track the KPIs that matter most when it comes to managing your revenue cycle, from high-level executive dashboards to detailed drill-down reports. Custom Reports : Work with our team to build custom reports tailored to your unique reporting needs.: Work with our team to build custom reports tailored to your unique reporting needs