Core923 is a small, deliberately senior bench. Our principals have shipped production systems at Microsoft, Netflix, Salesforce, AWS, Google, Tier-1 telecom carriers, and Fortune 500 health systems. The architect on your sales call is the architect on your engagement. No bait-and-switch.
Companies our senior bench has built or shipped to in production. We don't claim partnership; we claim experience.
Six senior profiles reflecting the depth across our pillars. Specific principals are matched to engagements based on scope. Detailed profiles are shared under NDA after a fit conversation.
17+ years shipping Java & .NET production systems. Former Senior Staff Engineer at Salesforce and a top-10 US bank. Led FHIR-native platform builds for two Fortune 500 health systems. Author of internal training material on event-sourcing patterns now used across engagements.
14 years of platform engineering at carrier-grade scale. Former Site Reliability Engineer at Netflix and platform lead at a Tier-1 mobile carrier. CKAD, CKA, CKS certified. Speaker at KubeCon NA. Has shipped K8s platforms supporting 10⁹+ events/day in production.
12 years in production ML. Former Senior ML Engineer at AWS (SageMaker team) and a Series-C+ digital health platform. Built RAG systems on-prem for HIPAA-bound clinical workflows. PhD in Computer Science (machine learning). Published in NeurIPS workshop track.
16 years of cloud architecture. Former Cloud Architect at Microsoft (Azure FastTrack) and Salesforce (CRM platform). GCP Professional Cloud Architect. Led the migration of a global asset manager's 12 PB warehouse from Teradata to BigQuery without downtime.
15 years in security engineering. Former Detection Engineering Lead at a Top-10 US bank and security architect at Google (BeyondCorp era). CISSP, CCSP, OSCP. Has cleared four consecutive HITRUST audits with zero material findings; led PCI scope reduction from 60% → 8% of engineering estate at a Tier-1 payments processor.
18+ years of multi-team enterprise programs. Former Senior Program Manager at Microsoft and program lead at a Tier-1 mobile carrier. SAFe SPC, PMP, CSPO. Has led 11-team 5G core launches and rescued $140M EHR migrations behind schedule. Public speaker on engineering effectiveness (DORA, SPACE).
Excerpts from past-engagement reference calls and post-engagement surveys. Names withheld per NDA.
"They told us in week three that one of our 'must-haves' was actually not load-bearing. We almost didn't believe them. They were right. We saved a quarter of the budget by cutting it. I haven't worked with a consulting firm before that argued AGAINST scope expansion."VP Engineering · Fortune 500 health system · K8s migration engagement
"The principal architect on the sales call was on every standup for nine months. That alone is unusual. The fact that he wrote production code is what convinced our CTO we'd hired the right firm."CTO · Tier-1 payments processor · PCI scope reduction engagement
"By the operate-with phase, my team didn't need them anymore. That was the goal — and it was the goal from the first conversation. They left runbooks, postmortem culture, and four engineers who genuinely understood the new platform. Most consulting firms leave you with a dependency."Director of SRE · Tier-1 mobile carrier · OSS observability rebuild
30-minute call. Senior architect on the line. We'll match you with the right profiles after the first conversation.