Tobi Kareem

Tobi Kareem

Staff Software Engineer

Bay Area, CA

Staff Software Engineer with 12+ years building and shipping full-stack products end to end — ASP.NET Core / .NET 8 and Go backends behind React + TypeScript front ends. Proven at scale: 50K+ daily events on Kafka, multi-region Cosmos DB, 99.95% uptime, and P0 MTTR cut from 45 to 12 minutes. Deep in distributed systems, OAuth2/OIDC identity platforms, and production LLM integration.

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12+ Years experience
99.95% Uptime at scale
50K+ Daily events on Kafka
45→12 min P0 MTTR reduction

Core competencies

  • .NET / ASP.NET Core
  • Full-Stack (React + TypeScript)
  • Distributed Systems
  • Event-Driven (Kafka)
  • API & Identity Platforms (OAuth2/OIDC)
  • Cloud (Azure/AWS/GCP)
  • Production Reliability / SLOs
  • LLM Integration

Experience

Intuit Sep 2024 – Present
Staff Software Engineer — Partner Platform
San Francisco Bay Area
  • Designed and own the partner integration API layer processing 8,000+ daily partner transactions at 99.95% uptime
  • Built partner-facing admin and analytics dashboards in React + TypeScript with a Node.js BFF layer over the .NET APIs
  • Built core services on .NET 8 and Go with circuit breakers, retry policies, and idempotency guarantees across all integration surfaces
  • Integrated LLM capabilities (OpenAI API, Claude API) into partner workflows; built evaluation harnesses and observability pipelines to measure AI quality in production
  • Implemented OAuth2/JWT authentication and authorization for all external partner APIs; extending to AI agent auth patterns
  • Lead a team of 4 engineers; define technical standards, run architecture reviews, and own the incident response runbook
ICE (Intercontinental Exchange) Aug 2023 – Sep 2024
Staff Software Engineer — Mortgage Transaction Platform
Bay Area
  • Designed and maintained a multi-region Azure Cosmos DB layer serving 15,000+ daily partner requests with strict ACID guarantees
  • Architected cross-region replication with consistency-level tuning to meet both latency SLAs and correctness requirements
  • Built React + TypeScript monitoring dashboards and internal tooling surfacing real-time anomaly detection and audit data to partner-operations teams
  • Built the partner API surface (.NET and Java/Spring Boot) with OAuth2, rate limiting, and structured audit logging for regulatory compliance
  • Led incident response and post-mortems; reduced P0 MTTR from 45 min to 12 min through SLO design and runbook automation
Tesla Nov 2018 – Aug 2023
Senior / Staff Software Engineer — Manufacturing & Identity Platforms
Fremont, CA
  • Built Tesla WARP, the internal OAuth2 + Identity Server platform unifying access for 3,000+ internal users, 500+ external partners, and 10+ applications (OIDC, SAML2, token lifecycle, RBAC)
  • Built the WARP identity admin console and partner self-service portal in React + TypeScript on a Node.js API layer
  • Led the event-driven MRP platform on Apache Kafka (.NET and Java/Spring Boot) processing 50,000+ daily events across 4 global facilities
  • Delivered real-time inventory visibility through React + TypeScript operations dashboards across Fremont, Shanghai, Berlin, and Austin
Advantasure (formerly Tessellate) Sep 2018 – Nov 2018
Software Developer
Glen Allen, VA
  • Built and maintained healthcare information system components following SOLID design principles
  • Championed Test-Driven Development across the team — mocking, unit testing, and integration testing with Postman collections (.NET, ASP.NET Web Forms, Angular)
Black Knight Jan 2017 – Aug 2017
Software Developer
Jacksonville, FL
  • Built a cross-platform mobile app for an Educational Loan Financial Management System using Xamarin.Forms, expanding accessibility for borrowers
  • Maintained UAT/STG environments and deployment pipelines with Jenkins; partnered with business owners and SMEs (.NET Framework, ASP.NET MVC, WCF, REST, Angular, SQL)
Aviat Networks Jan 2015 – Dec 2015
Technical Support Engineer
Lagos, Nigeria
  • Delivered onsite and remote troubleshooting for enterprise communication links serving banks and 300+ clients; installed and configured telecom networks and completed Tellabs 7100 packet-optical transport training
Aptech Computer Education May 2013 – Sep 2013
Intern
Oyo, Nigeria
  • Built an Examination Expert System (final-year project) and website prototypes with HTML, CSS, and JavaScript (.NET Framework, Bootstrap)

Skills

.NET / Backend .NET 8 / ASP.NET Core / MVC, Spring Boot, Node.js/Express, Go, WCF
Languages C#/.NET 8/Core, TypeScript/JavaScript, Python, Go, Java, Swift, Objective-C
Frontend / Full-Stack React, TypeScript, Node.js, Angular, HTML/CSS, REST & GraphQL APIs
Identity OAuth2, OIDC, SAML2, Identity Server, JWT, RBAC
Distributed Systems Apache Kafka, Azure Service Bus, circuit breakers, saga, event-driven
Data Azure Cosmos DB (multi-region), PostgreSQL, SQL Server, Redis
Cloud & Infra Azure, AWS, GCP, Kubernetes, Docker, Terraform, Helm
AI / ML OpenAI API, Anthropic API, RAG pipelines, eval harnesses, agentic workflows
Practices TDD, unit/integration testing, CI/CD (Jenkins), SOLID, OpenTelemetry, SLO/SLA design

Education

M.Sc, Computer Science / Computer Engineering
Hofstra University · May 2018
B.Sc (Honors), Computer Science (Technology)
Babcock University · June 2014

Certifications

Microsoft Exam 483: Programming in C#
Microsoft · 2019
Employability Skills Certification
PSENSE · 2014
Private Pilot License
FAA

Let's build something together.

Open to senior / staff engineering roles. Grab the résumé or get in touch.

Download Résumé captain@tobikareem.com