PiriGram
Software architecture for .NET, Azure and AI · Los Angeles

An architect who still writes the code.

I’m Yener Yardim. I have been building software since 2002, much of it in finance: core banking at Butterfield, payments at Official Payments, analytics for bank executives at Deluxe, and lending and investment platforms at Wells Fargo Capital Finance and, most recently, a global investment manager. Through PiriGram I take on a small number of consulting projects and build my own products.

Work with me

I take on a small number of consulting projects at a time. Most involve .NET and Azure systems, and the teams that bring me in usually want an architect who also writes the code.

  • 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.

Remote, on US Pacific hours, in English or Turkish. The first call is free: we go through the problem and whether I am the right person for it, and you leave with a suggested next step either way.

Products

I build my own products too, and write up how each one is made. Nodal90 runs on the same .NET, Azure and PostgreSQL stack I build for clients; PopSkip is a TypeScript game with a solver that runs on the phone.

Puzzle gameLive in the browser

PopSkip

A puzzle played on sheets of bubble wrap. After each pop you jump to the next bubble, three ahead in a straight line or two on the diagonal, and never onto one you have already popped. Pop the whole sheet to finish the roll. It sounds easy until four bubbles are left and none of them can be reached.

  • A painted trail of rolls, from the Meadow to Spring, and a new roll every day
  • A short first lesson with Piri, the game's cat
  • Hints come from a solver that checks the move can still finish the roll
  • Works offline after the first visit. No account, no ads

Free in any modern browser, on a phone or a computer. iPhone and Android apps are planned.

PopSkip's home screen: a painted meadow at sunset with a stone path, a cat in a straw hat and red scarf walking it, finished sheets of bubble wrap on the stones behind and the next roll ahead, with a Next · Roll 5 button.
A PopSkip roll in play: an irregular sheet of bubble wrap with twelve popped bubbles numbered in the order they were popped, a pops counter of 12, 16 bubbles left, and Undo, Hint and Restart buttons.
Football match centreLive

Nodal90

Fixtures, scores, lineups, timelines and match stats for club and international football, with Nodal90's own forecast for selected matches.

Every forecast it publishes stays on a public record next to the final result and what the betting market expected, including the ones it got wrong.

A standalone product by PiriGram. See every forecast it has published.

The Nodal90 match centre: the day's matches on the left, one with a pre-match forecast of 40% home, 23% draw and 37% away, and a finished match on the right with the score, venue, referee and Overview, Lineups, Timeline and Stats tabs.
Nodal90's How our forecasts did page as of 30 September 2026: its pick came true in 54 of 95 matches, compared with 51 of 95 for the betting market's expectation.

About me

Yener Yardim standing at the wheel of his sailboat in a marina, in a white T-shirt and a cap.
At the helm.
Yener Yardim playing an electric guitar on stage under green light.
On stage with the band.

I’m Yener Yardim, a software engineer and architect in Los Angeles. 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.

I’ve been writing code since the days of Turbo Pascal and Gopher. My career started at CyberSoft in Ankara. In 2002 I built my first product of my own, a Turkish discussion forum called tartisiyorum.com, and later sold it. From there my work took me to CAS Americas, now part of Accenture, as a CRM consultant; to Butterfield in Bermuda for core banking; to Official Payments for government and utility payments; to Deluxe for financial analytics for small and mid-size banks; and then to Wells Fargo Capital Finance, Preston Ventures, Bilflo and, most recently, a global investment manager, where I have built greenfield platforms.

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.

A fragment of Piri Reis's 1528 world map on parchment: a decorated floral border, large compass roses with rhumb lines, ships under sail, and the islands of the Caribbean at the lower left.
Part of Piri Reis’s second world map, drawn in 1528: the North Atlantic, with the Caribbean at the lower left. Topkapı Palace Museum, Istanbul.

M.S. in Computer Information Systems, Georgia State University · MBA, Southeastern Louisiana University · B.S. in Mechanical Engineering, Middle East Technical University

Get in touch

A project you want help with, a contract or fractional architect role, or a question about PopSkip or Nodal90. I read every message. To talk it through first, book a 30-minute call.

Your message comes to me by email and is handled as described in the privacy policy.