Raphael O.
Available now

Raphael O.

Snr. Staff Software Engineer

14 years of experience

United States 🇺🇸
English (Native)
Interview

Short bio

I am a technical leader and problem solver who designs and delivers scalable, distributed software and AI systems that create measurable business value. I have led cross-functional teams and platform initiatives, translating complex requirements into reliable, production-ready solutions built on open standards. My experience spans architecting, mentoring, and driving execution across diverse technology stacks, with a strong focus on operational excellence, product impact, and long-term system sustainability.

Tech stack

Main technologies
LeadershipAgileBig dataAPI designPyTorchMachine LearningLLMsRAGCamelSOALangChainSQLDevOpsIntegrationRuby on railsAWSGoogle CloudPythonJava

Work experience

  • Snr. Staff Software Engineer02/26 – 07/265 m.

    Spearheaded AI-driven automation across a large OB/GYN practice by developing an AI phone agent that manages patient calls, schedules appointments, and seamlessly integrates VoIP and EHR systems to streamline clinical operations.

    Responsibilities:
    • Architected and led the development of an end-to-end AI-powered medical imaging platform, enabling ultrasound data capture, cloud-based processing, and analysis for remote, low-resource healthcare environments.
    • Designed and deployed scalable cloud infrastructure on AWS using S3, Lambda, CDK, SQS, and CloudWatch to power AI workflows, medical imaging pipelines, and healthcare automation services.
  • Machine Learning Engineer, AI as a Service (AIaS)07/21 – 10/254 y.

    Led cross-functional efforts to scale a company’s AI-as-a-Service (AIaS) platform, enabling rapid, compliant deployment of ML models across high-volume fraud detection, credit risk, and analytics pipelines processing billions of transactions daily.

    Responsibilities:
    • Built and optimized low-latency inference microservices serving a company’s enterprise AI models, deployed across GCP, AWS, Azure and on-prem, achieving strict SLA compliance and delivering real-time insights with sub-second latency.
    • Led design and deployment of RAG based AI solutions over internal knowledge systems, implementing robust guardrails and validation frameworks to ensure compliant, secure, and reliable LLM outputs in production.
    • Designed and automated end-to-end MLOps pipelines (Airflow, PySpark, Kubernetes) for model retraining, monitoring, and CI/CD, reducing update latency and improving reliability for large-scale AI workloads.
    • Mentored engineers on scalable ML deployment, reproducibility, and observability, fostering technical excellence and operational maturity across global AI platform teams.
    • Owned end-to-end model release lifecycle, from validation and staging to canary deployment, monitoring, and rollback, ensuring reliable, compliant production rollouts at scale.
  • Machine Learning Engineer, a company Watson08/19 – 06/212 y.

    Owned end-to-end enhancements to Watson’s Visual Recognition APIs on a company Cloud, improving scalability, reliability, and model performance for enterprise clients.

    Responsibilities:
    • Led cross-team collaboration to deliver cloud-based cognitive solutions, mentoring junior engineers in ML model development and deployment best practices.
    • Accelerated delivery of AI solutions by leveraging and extending a company Cloud frameworks, streamlining cognitive model lifecycle management.
    • Implemented a face similarity search API leveraging indexed face feature embeddings.
  • Senior Software Developer09/11 – 08/165 y.

    Engineered enterprise software integrations, APIs, web-apps, and resolved issues around availability and performance for this major African technology services company’s robust messaging systems and SOA infrastructure.

    Responsibilities:
    • Oversaw development of online banking platform for Fidelity Bank using JBoss Fuse ESB & components, Elasticsearch (ELK), MSSQL and Redis; this resulted in attracting many customers and significantly increasing revenues for this client.
    • Championed developer experience initiatives, leading the creation of the Interswitch Developer Console and onboarding programs that empowered partner engineers and accelerated API adoption across key financial institutions.
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U.S.-Based

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