Senior Software Engineer, Platform

Medonix; United States; Remote; USD 190,000 - 240,000; Full time

Job summary

Medonix in the United States is seeking a senior backend engineer to own one or two platform services, from design to on-call, and to shape the SLA they ship against.

You will optimize the claim ingestion pipeline, design robust APIs used by the AI Suite, EHR, PMS, and analytics modules, and drive measurable improvements in reliability, publishing SLOs and burn rates weekly.

Qualifications

• 6+ years building production backend services at meaningful scale.
• Strong TypeScript or Go. Comfortable switching within 3 months.
• Production experience with Postgres performance tuning beyond basics.
• Production experience with a queue/streaming system (Kafka, NATS, SQS, or similar).
• Comfortable owning on-call rotations and writing postmortems.

Responsibilities

• Own one or two platform services end-to-end: design, build, on-call, and SLA.
• Reduce latency and cost of the claim ingestion pipeline as volume grows.
• Design APIs used by the AI Suite, EHR, PMS, and Analytics modules.
• Drive measurable improvements in platform reliability with weekly SLOs / burn rates.
• Mentor a junior or mid-level engineer on the team.

Skills

6+ years backend

TypeScript/Go

Postgres tuning

Queue/Streaming systems

On-call rotations

Tools

Postgres

Kafka/NATS/SQS

Job description

Build the platform services that run agentic AI for U.S. healthcare revenue cycle. TypeScript / Go / Postgres at scale, with PHI-aware design baked in.

You will join a small platform team that owns the services every Medonix product sits on top of: claim ingestion, payer routing, eligibility, the agent orchestration layer, and the data pipelines feeding the analytics module. The platform handles real claim volume from real practices, so reliability is not a future problem. It is a daily one.

What you will own

• Own one or two platform services end-to-end: design, build, on-call, and the SLA they ship against.
• Reduce the latency and cost of the claim ingestion pipeline as volume grows year over year.
• Design APIs that the AI Suite, EHR, PMS, and Analytics modules consume, and that customer engineering teams integrate against.
• Drive a measurable improvement in platform reliability (we publish SLOs and burn rates internally every week).
• Mentor a junior or mid-level engineer on the team.

Must-haves

• 6+ years building production backend services at meaningful scale.
• Strong TypeScript or Go. Comfortable in both within 3 months on the job.
• Production experience with Postgres performance tuning beyond the basics.
• Production experience with a queue / streaming system (Kafka, NATS, SQS, or similar).
• Comfortable owning on-call rotations and writing the postmortems.

Nice-to-haves

• Prior healthcare / fintech / regulated-domain experience.
• Experience with HL7 v2, FHIR, or X12 EDI.
• Experience designing systems that handle PHI under HIPAA.
• Open-source maintainership of something non-trivial.

Day in the life

Mornings open with a 30-minute team standup that runs async in Slack first and a 15-minute live sync second. The rest of the day is deep-work time on whichever service you own. Expect one design review, one PR review, and one customer-context conversation in a typical day. On-call weeks are roughly one in six and have historically averaged less than one production page per week.

Compensation

Base $190K-$240K depending on location and depth, plus 0.05%-0.20% equity, plus a 10-15% target performance bonus. Comp is reviewed annually with transparent banding.