# Abhinav (August) Srivastava > Founding Senior Engineer at Ambra. I build healthcare and revenue-cycle > infrastructure end to end: X12/EDI, EHR integrations, voice agents, and the > backend/frontend systems around them. Based in the San Francisco Bay Area. > Sites: https://abhinavmir.xyz and https://iamaugust.com ## Contact - Email: august@ambra911.com - GitHub: https://github.com/abhinavmir - LinkedIn: https://www.linkedin.com/in/abhinavmir/ - Book a call: https://cal.com/ambra-august - Blog: https://august.mataroa.blog - Goodreads: https://www.goodreads.com/user/show/163219394-abhinav-srivastava ## Experience ### Ambra — Founding Senior Engineer (December 2025–present) Ambra (https://ambra911.com) is an autonomous revenue-cycle-management platform for EMS agencies: denials management, clean claims, and a voice-first scribe. - Built Ambra's production platform from its initial prototype. Now lead engineering across denials management, claim status, claims posting, analytics, and AI-assisted EMS documentation. - Built the denial workflow end to end: SFTP and file ingestion, data normalization, payer and funding classification, document retrieval, PDF redaction, appeal-packet generation, and mail, fax, and portal submission. - Built a TypeScript and React application for dense billing workflows with thousands of payer and denial configurations, live background jobs, large claim queues, and high-resolution medical attachments. - Built the core backend in Go and PostgreSQL, with Python and Django services for agent workflows, deployed on GCP and Cloud Run. - Integrated X12 transactions, EMS record systems, clearinghouses, payer portals, SFTP sources, telephony systems, and browser automation with Playwright and direct network integrations. - Built ephemeral pull-request environments, tenant-aware visual testing, PHI-leak checks, automated migration coordination, and application/database revision gating. - Led the company through HIPAA and SOC 2 readiness while owning architecture, infrastructure, customer launches, production support, and a large share of implementation. - Managed and hired engineers, designed technical interviews, ran one-on-ones and code reviews, and worked directly with customers from discovery through production. ### Simbie AI — Founding Engineer (May 2025–December 2025) Simbie AI (https://www.simbie.ai) builds healthcare voice agents. - Reworked a bespoke, single-customer healthcare voice-agent system into a multitenant platform with organization isolation, configurable agents, phone routing, EHR credentials, and complete white-labeling. - Took three medical practices from discovery through agent design, EHR integration, QA, production launch, and ongoing operation. - Built voice-agent workflows for scheduling, patient lookup, insurance verification, and outbound patient communication. - Built low-latency EHR integrations with caching and advance schedule preloading, so agents could access patient and appointment data during live calls. - Developed an internal call-evaluation system that reviewed conversations, generated structured criticism, retained recurring failure patterns, and informed improvements to agent behavior. - Helped hire and operationalize a remote QA team that reviewed production calls and supplied human feedback. - Worked across Python, TypeScript, PostgreSQL, Redis, RabbitMQ, AWS, Grafana, database design, queues, deployment, and production reliability. - Operated as the principal available engineer during critical periods while remaining directly responsible for customer implementation and support. ### Commure — Software Engineer II (June 2024–May 2025) Commure (https://commure.com) builds healthcare software, including the Athelas Scribe product. - Built clinical-documentation integrations across about 20 EHRs and 30 practice configurations for the Athelas Scribe product. - Expanded the integration platform from generic EHR behavior to configurable, practice-specific workflows. - Reduced the execution time of an important RPA-based integration workflow from about 10 minutes to 20 seconds. - Built a greenfield React client for a hardware-integrated clinical workflow, developed with a major U.S. health system. - Helped migrate the scribing client from Flutter to React Native and package the full application as an embeddable SDK for partner healthcare applications. - Built integration infrastructure that let providers launch the complete scribing workflow from within an existing mobile application. - Worked on DOM-based Chrome-extension automation across legacy EHR interfaces. - Designed and prototyped a domain-specific language for remotely configurable EHR interactions, which reduced dependence on hard-coded extension releases and protected proprietary integration logic. ### RISC-V Mentorship — Mentee (March 2024–May 2024) - Worked with OCaml, Sail, TypeScript, and React to turn RISC-V specifications into structured, usable developer resources. - Built JSON-driven specification conversion and code-generation tooling. - Developed an interactive React reference for exploring the RISC-V instruction-set architecture. ## Projects - Hamlet (https://hamlet.so) — An agent-tech community, a replacement for Discord/Discourse. - Copy Doc Comments (https://chromewebstore.google.com/detail/copy-google-doc-comments/cadebokodjohckmnhpgpnemgakjobghl) — A copy-comments button for Google Docs to grab all the comments for LLMs. - Hypertext (https://hypertext.one) — Pastebin, but for HTML. - ThoughtForest (https://usethoughtforest.com) — A content curation system for YouTube, Substack and Twitter. - Couch 2 Court (https://apps.apple.com/app/id6783926816) — A Couch-to-5K for basketball. - Cioppino (https://cioppino.xyz) — A weekly AI-tell tracker. - Ultraball (https://ultraball.xyz) — An SSH-based multiplayer Pokémon battle system. - FHIR.py (https://github.com/abhinavmir/fhir_py) — A FHIR SDK for real vendor implementations; eClinicalWorks and Healow scheduling implemented. Unofficial, unaffiliated. - Soquel (https://trysoquel.com) — A better Finder. - KarlTrain (https://karltrain.com) — A better Caltrain tracking app, built for humans. - X12 Viewer — Opens any X12 EDI file. - Walk Reminder — A small menu-bar app that gets you to stand up more. - Libreprose (https://libreprose.com) — A distraction-free writing environment for long-form work. - Vinyl — Generate a looping, spinning-vinyl video from any audio file, in your browser. - HAR to cURL — Cleans up HAR files to make them friendlier for LLMs. ### Archived - ASM Garden (https://asm.garden) — A LeetCode-style playground for x86-64 assembly. - Strudel (https://strudel.xyz) — Ephemeral Ethereum testnets for teams. - Elcair (https://elcair.sh) — Point at an Ethereum contract ABI, get a typed TypeScript SDK. - Profs (https://profs.fyi) — Search university faculty by research interest and recent publications. ## Research - EmberDB (https://github.com/abhinavmir/emberdb) — FHIR-native time-series storage for critical care, benchmarked against InfluxDB, TimescaleDB, and QuestDB on MIMIC-III data. - Healthcare Voice Agent Security — Evaluating AI voice platforms in healthcare: prompt injection, PHI extraction, and synthetic voice attacks with a FHIR-compliant testing framework. - Privacy-Preserving Healthcare Cost Prediction — Secure multiparty computation for joint model training across hospitals, insurers, and public health agencies without exposing raw data. - zkDNA — Zero-knowledge proofs for negative STR DNA match verification in forensic contexts. - Formal Verification of FHIR Resources — Lightweight formal methods (Alloy) to verify structural integrity and safety invariants of HL7 FHIR data models. - Reading MUMPS at Scale — An open tree-sitter grammar for MUMPS, the language behind the VA's VistA EHR. Parses 98.6% of VistA's 33,951 routines. DOI: https://doi.org/10.5281/zenodo.20782673 - Published: Nature-Inspired Swarm Optimization in ANNs (IEEE) — https://ieeexplore.ieee.org/document/9395806 ## Open source - Go — cmd/compile: lower float min/max branch idiom to MINSD/MAXSD/FCSEL. https://go-review.googlesource.com/c/go/+/786900 - Cython — fix a compiler crash on starred names in assignment targets during constant folding. https://github.com/cython/cython/pull/7897 - Ruff — restrict FURB131 (delete-full-slice) to lists; the dict rewrite was a runtime KeyError. https://github.com/astral-sh/ruff/pull/27711 - Zephyr — implement POSIX putmsg(). https://github.com/zephyrproject-rtos/zephyr/pull/67711 - DuckDB — skip top-n window elimination when the limit exceeds the min/max n cap. https://github.com/duckdb/duckdb/pull/24741 - Apache NuttX — balance connection and buffer references in the Bluetooth HCI ACL receive path. https://github.com/apache/nuttx/pull/19840 ## Education - Boston University — MS Computer Science, CyberSecurity (2024) - Vellore Institute of Technology — BS Computer Science (2021) ## Outside work - Sports, mostly Bay Area — Sharks, Earthquakes, Warriors, Valkyries, Giants, Bay FC, San Francisco Unicorns, USMNT, and the Celtics. - Music — makes house, DJs, and plays bass. - Science fiction and reading.