Building enterprise-ready email security
Early client-side and platform engineering for an email security product used in demanding enterprise environments.
- Client
- Tessian
- Date
- Service
- Product and technology delivery
- Role
- Early client-side engineer
What changed
- Modernised a legacy Outlook add-in.
- Worked across client-side software and mail infrastructure.
- Supported repeatable deployment for security-conscious organisations.
Context
Tessian was building email security software for organisations with demanding deployment and security requirements. The product had to work inside the email tools people already used and within customer-controlled environments.
My remit
I joined the early engineering team to work on client-side product delivery, then contributed across the mail infrastructure and deployment system where the product boundaries required it.
Decisions and delivery
- Built and maintained the Outlook add-in used in the core customer journey.
- Led a staged move from legacy VB.NET towards modern C# rather than pausing product work for a wholesale rewrite.
- Contributed to the mail-transfer infrastructure and its Concourse delivery pipeline.
- Used Ansible to make customer-controlled deployments more repeatable and reviewable.
- Worked with product, engineering and customer requirements across the full delivery path.
Outcome
The work helped the early product meet demanding enterprise delivery constraints. This case deliberately stops at Anosh’s own remit and does not attribute Tessian’s later funding, headcount or acquisition to that work.