Work

Evidence, not a tech stack list

Each engagement is described by the problem, what we owned, the hard design decisions, and where it landed. Client names and internal details are limited to what we are permitted to share.

TenkaCloud

GitHub →

Problem: Cloud competitions and GameDays need isolated, reproducible environments per participant, with fair scoring and tight operational control.
Our role: Designed and built a multi-tenant SaaS platform with a control plane / application plane split and automated deploys into competitor AWS accounts.
Hard part: Tenant isolation, role-based access, SSO, and auditability without sacrificing operability or deploy speed.
Result: An open-source platform that runs Battle and Challenge formats and doubles as public evidence of multi-tenant operations design.

JPKI Web3 Infrastructure

Problem: A wallet platform built on Japan's public-key infrastructure (JPKI) needed infrastructure that could stand up to audit scrutiny.
Our role: Infrastructure design and audit readiness — access boundaries, logging, and operational controls around sensitive identity flows.
Hard part: Balancing strict auditability and least privilege with a workable developer and operations experience.
Result: An infrastructure design positioned for audit readiness and safe operation.

Cloud & Identity Migration

Problem: Organizations changing domains, identity providers, or deployment targets risk outages and broken access during cutover.
Our role: Planned and executed domain, DNS, identity, and deployment cutovers with rollback and operational continuity designed in from the start.
Hard part: Sequencing email, SSO, and SaaS integrations so users keep working through the transition.
Result: Cutovers with explicit rollback paths and continuity, not big-bang risk.

Large-scale IoT & Cloud Operations

Problem: Operating cloud platforms managing very large device fleets demands reliability, observability, and cost discipline at scale.
Our role: Cloud architecture and operational design for platforms handling over a million managed devices.
Hard part: Reliability and cost control while keeping the platform observable and operable.
Result: Operational platforms running at scale with monitoring and automation in place.

CCoE / DevSecOps / Audit Automation

Problem: Engineering organizations need shared guardrails, security practices, and repeatable audit evidence across many teams.
Our role: Helped build a Cloud Center of Excellence and DevSecOps practices, including audit automation, across a 2,000+ engineer organization.
Hard part: Standardizing without slowing teams down; making compliance a by-product of the pipeline.
Result: Shared guardrails and automated audit evidence adopted across teams.

Work with BULL

Cloud foundations, corporate domain and identity migrations, IaC and observability, plus architecture reviews and selected delivery engagements. Tell us what you are building.

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