
Evelyn Vance
Principal Architect
Distributed consensus, ledger cutovers, and formal methods for capital markets.
Saleycon is a software house. We help businesses turn ideas, manual processes, and scattered tools into clean, usable, and scalable digital products.
We design and ship web apps, mobile products, SaaS platforms, AI features, and enterprise systems — with senior engineers on the work and ownership that stays with you.
If you need a partner who ships production software (not slideware), we should talk.
We optimize for production software your team can run — not slideware that dies after the pitch.
Architecture and delivery stay with experienced engineers, not layers of account theater.
We say what will take time, what is risky, and what can wait — before the contract is signed.
We work with your product and tech leads directly.
Web, mobile, SaaS, AI, and enterprise systems.
Pick the commercial model that matches the risk.
Source, docs, and deploy paths stay with you.

Principal Architect
Distributed consensus, ledger cutovers, and formal methods for capital markets.

Director of Platform
Internal developer platforms, release hermeticity, and zero-downtime rollouts.

Prefer small, reviewable increments over big-bang releases.
Performance, reliability, and user outcomes beat vanity metrics.
Auth, secrets, and audit trails are designed in — not bolted on later.
For regulated clients we deploy on dedicated hardware or single-tenant clouds, with HSM-backed keys, tamper-evident logging, and destruction procedures documented in runbooks — not marketing slides.
Direct technical intake. No sales deck. We review architecture, SLOs, and failover constraints under mutual NDA.
Head of Security Architecture
Threat models, HSM estates, and post-quantum readiness for regulated systems.

Staff Systems Engineer
Kernel-bypass networking, eBPF observability, and mechanical sympathy in hot paths.
Runbooks, ownership, and clean handoff are part of done.