PiriGram
PopSkip
A puzzle played on sheets of bubble wrap: jump three straight or two diagonally, never onto a popped bubble. Every roll is proven solvable before it ships, and hints come from a solver that runs on the phone, offline.
Principal software architect · .NET, Azure and AI · Los Angeles
An architect who leads a team of AI coding agents.
I’m Yener Yardim. I have been building software since 2002, much of it in finance. Today I design systems and deliver them with Claude Code and OpenAI Codex agents working under my direction, and I keep responsibility for the architecture, the tests and what goes to production. I am open to consulting projects, contract work and full-time architecture roles.
Ways to work together
Remote from Los Angeles, on US Pacific hours, in English or Turkish. The first call is free: we go through what you need and whether I am the right person for it.
- Consulting project
A defined piece of work
An architecture review, a production problem found and fixed, or an AI feature built on your own data, with a written result your team keeps.
- Contract
An architect inside your team
A few days a week or full time for a few months: setting the architecture, running delivery with AI coding agents alongside your engineers, and leaving every decision written down.
- Full-time role
Architecture or engineering lead
Building greenfield platforms or rescuing ones that have grown hard to change, in finance or in a product company. Los Angeles or remote.
What I usually help with
Architecture reviews
A written assessment of a system you run, are about to inherit or are about to fund: what holds up, what will break first, and what to fix in what order.
Backend and Azure work
APIs, background jobs, messaging and data integration in C# and .NET on Azure, designed and built alongside your team.
AI features on your own data
Document ingestion, search and retrieval over your content, and LLM features added to an existing product with the checks they need before people rely on them.
Production problems
Jobs that slow down, race conditions, data that drifts out of sync. I find the cause, fix it and write down what changed.
Modernizing legacy .NET
Monoliths and older .NET systems split into parts that can be changed safely, with migrations planned so the business never stops.
Building with AI coding agents
Setting a team up to deliver with Claude Code and Codex: the decision records, tests and review gates that make agent-written code safe to ship.
What I have built
Three products of my own, each with a page on how it is built: the architecture and the decisions behind it. They are the clearest way to see how I work.
PurrJar
A calm sorting puzzle with Piri the kitten: move balls of yarn between glass jars until every jar holds one colour. A solver has checked all hundred levels, and the same solver gives hints on the phone.
Nodal90
Fixtures, lineups, tables and match stats, with its own forecasts and a public record of every one against the betting market. A .NET, Azure and PostgreSQL system with a model it trains itself.
Experience
More than twenty years of building software, most of it in financial systems where the numbers have to be right. Most recent first.
- PiriGram2026 to now · founderArchitecture and engineering work for clients, and my own products, PopSkip, PurrJar and Nodal90, delivered with a team of AI coding agents.
- A global investment manager2024 to now · vice president, investment and trading technologyArchitected a modular investment platform, its shared data-synchronization framework on Azure, and an investment-research platform built on retrieval over the firm’s documents. Mentored more than twenty engineers and brought AI-assisted delivery to the teams.
- Preston Ventures2023 to 2024 · lead engineerRe-architected a high-concurrency .NET valuation platform for life settlement portfolios into independently scheduled workers, which ended its race conditions and production incidents, and cut its database storage by about 95%.
- Bilflo2022 to 2023 · lead engineerBuilt the invoicing service of a cloud back-office platform for staffing agencies, on Kafka-driven workflows with CQRS and sagas.
- Wells Fargo Capital Finance2017 to 2022 · senior engineer and team leadLed two delivery teams at once while modernizing capital-finance systems, and designed the integration architecture for a zero-downtime migration of the risk systems.
- Deluxe2014 to 2017 · senior engineerFinancial analytics for small and mid-size banks: backend services, reporting pipelines and drill-down reports for bank CFOs and CEOs.
- Official Payments, now ACI Worldwide2012 to 2014 · senior engineerAn API that keeps millions of payment transactions in step between the payment processors and the customer-facing application.
- Earlier1998 to 2012Core banking at Butterfield in Bermuda; CRM consulting at CAS Americas, now part of Accenture; tartisiyorum.com, my first product, a Turkish discussion forum I built in 2002 and later sold; and CyberSoft in Ankara, where my career started.
M.S. in Computer Information Systems, Georgia State University · MBA, Southeastern Louisiana University · B.S. in Mechanical Engineering, Middle East Technical University
About me
I’m Yener Yardim, a software architect in Los Angeles. I started writing code in the days of Turbo Pascal and Gopher. Away from the keyboard I skipper a Catalina sailboat called Sea Sharp (yes, like C#) and play guitar. Until last year I was in a Turkish rock band.
As AI changed what a small team can build, I formed PiriGram to build my own products and to help businesses with their hardest software problems. The name comes from Piri Reis, the Ottoman admiral whose 1513 map is the oldest surviving map to show the Americas; “gram” means something drawn. He drew coastlines. I sail by them, and I draw systems.
Get in touch
A project you want help with, a contract or a full-time role, or a question about PopSkip, PurrJar or Nodal90. I read every message. To talk it through first, book a 30-minute call.