I'm
Alex
Architecting and shipping production systems end-to-end — from C#, .NET & cloud infrastructure to CI/CD and deployment. Building scalable backends, designing clean architecture, and delivering projects from zero to production.
1[ApiController]2[Route("api/[controller]")]3public class LeadsController4 : ControllerBase5{6 private readonly ILeadService _svc;78 [HttpPost("search")]9 public async Task<IActionResult>10 Search([FromBody] Query q)11 {12 var leads = await _svc13 .FindVerified(q);1415 return Ok(new {16 total = leads.Count,17 data = leads.Items,18 intent = "buying signals ✦"19 });20 }21}
Architecting the invisible
backbone of great apps
I'm a .NET developer with 5+ years of experience architecting and delivering production systems from scratch. From database design and backend APIs to cloud infrastructure, CI/CD pipelines, and deployment — I own the full lifecycle.
My core stack is C#, .NET, Azure & AWS — clean architecture, CQRS, ETL pipelines, Stripe integrations, and high-load databases like SingleStore and Elasticsearch. Currently leading a B2B platform processing 731M+ contacts.
Delivered 10+ projects for clients from Switzerland, USA, and Australia — choosing the right technologies, patterns, and infrastructure for each one.
Tech stack & expertise
Selected work
ListKit — B2B Lead Generation Platform
B2B SaaS platform for sales intelligence with AI-powered natural language search across 731M+ verified business contacts. Triple-verified leads, 21B daily buying intent signals analysis, Stripe Enterprise billing, full ETL pipeline processing terabytes of data, and 12+ third-party integrations including HubSpot, Google Sheets, Zapier, and Smartlead.
| Person | Company | Intent | |
|---|---|---|---|
JM James Miller VP of Sales | Rippling | ✓ j.miller@ripl… | |
SC Sarah Chen Head of Revenue | Lattice | ✓ s.chen@latt… | |
DP David Park VP Sales | Gong | ✓ d.park@gong… | |
AL Alex Liu Director of Sales | Notion | ✓ a.liu@notion… | |
MK Maya Kim VP Revenue Ops | Figma | ✓ m.kim@figma… |
Process Documentation Platform
SaaS platform for managing organisational process documentation. Built from scratch as project architect — creation, publishing, risk evaluation, notifications, and maintenance with Stripe payments and real-time collaboration.
Healthcare Platform
Patient journey tracker for symptom monitoring, disease management, and community discussion rooms for peer support. Serverless architecture with Azure Functions and CosmosDB for a Swiss healthcare client.
Real-time Issue Monitoring
Developer observability platform tracking production issues in real-time — stack traces, breadcrumbs, device details, visual timelines, email alerts, and built-in load testing without writing code.
Career timeline
Full Stack .NET Developer / Team Lead
Leading backend development for a B2B SaaS lead generation platform with 731M+ contacts. Architected billing with Stripe Enterprise, migrated ETL from AWS Glue to SingleStore Pipelines (13TB+), Auth0→Clerk migration, BFF architecture with RBAC, and integrated 12+ services: HubSpot, Google Sheets, Zapier, Smartlead, Enrow, MillionVerifier, and more.
Team Lead / Project Architect
Created SaaS documentation platform from scratch — architecture design, technology selection, cloud infrastructure setup, CI/CD pipelines, and full backend implementation. Led the backend team, managed SDLC, and delivered a production-ready product with Stripe payments and SignalR real-time features.
Full Stack .NET Developer / Team Lead
Delivered 8+ enterprise projects for clients from Switzerland, USA, and Australia. Built a healthcare platform with serverless Azure architecture (CosmosDB, Azure Functions), a real-time issue monitoring system with RabbitMQ + Elasticsearch + Docker, and mentored junior developers.
Let's build something remarkable
I'm currently open to new opportunities. Whether it's a full-time role, contract, or an interesting project — let's talk.
Currently considering full-time positions, contract engagements, and interesting open source collaborations. Response time: <24h.
Designed & built by Alex — 2026