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Software and consulting

An Independent, Senior Architect for Your Business Software.

I build business-critical software for companies, and I review systems that have slowed down or are struggling to grow, then fix what holds them back. Before an investment or a major decision I carry out independent technical reviews, and I join teams as a fractional software architect. Since 2020 I have led the architecture of a field management system used by several municipalities, and I have been writing software since 1992.

The first call is free: a 30-minute intro call.

Umut Yerebakmaz working on architecture diagrams with his team

1992

the year I started writing software

  • 20+ yearsof professional software development
  • 6+ yearsbuilding a field management system
  • Since 2016GraphQL in production
  • 11 yearsrunning my own web agency
What I do

From Analysis to Code, From Code to Release: I Manage the Whole Journey of Your Software.

Business Software

ERP and CRM that fit your company and your sector, multi-tenant SaaS and field management systems; GIS and map integration for municipalities and public bodies.

APIs, Data and Infrastructure

GraphQL since 2016; performance-focused PostgreSQL, real-time data streams and server management.

Architecture and Technical Leadership

From business analysis and software architecture to getting software ready for market; managing long-running projects.

Fractional Software Architect.

I join your team from outside for a fixed monthly fee: architecture decisions, code review and knowledge transfer to your team. From €2,400 per month for 1 day a week (excl. VAT).

Architecture Review.

I review your existing system independently and draw up a step-by-step migration plan. Delivered in 5-7 business days, from €3,000 (excl. VAT).

AI and my work

AI Has Made Software Faster. Making the Right Decision Still Takes Experience.

Today you can have something working within a few days, and that is genuinely valuable. But whether software stays up for years, holds together as it grows and protects your data still depends on the same things: the right questions, a solid foundation and someone who takes responsibility. I did this work before AI; now I can deliver the same care faster.

Umut Yerebakmaz working on software diagrams with a colleague and an AI robot

AI Is a Tool

I use it every day: it speeds up repetitive code, tests and documentation. I read and test every line it produces; the responsibility stays with me.

Experience Makes the Call

Data model, architecture and security decisions require having seen what broke, and where. That experience comes from making those decisions since 1992, and sometimes getting them wrong.

A Clear Plan, Not Promises

I tell you up front what I will do, how long it will take and where I see risk. If I think something will not work for you, I tell you that too.

Client feedback

What Clients Say.

Cavit Özananar

“We have trusted Umut with Pestpoint since 2020, and we have not regretted it for a single day.”

Cavit Özananar

CEO, Pestpoint

Translated from Turkish

Thinking about a similar project? Tell me briefly and we can look at it together.

Get in touch
Projects

Software Used in the Field and in the Office.

ABE BIYOSIDAL · 2020 – PRESENT

Biocidal Field Management System

Multi-tenant, GIS-based field management software that brings the pest and vector control operations of municipalities and private pest control companies into one system, from a citizen request to end-of-day reconciliation. Used by more than one municipality.

Admin Panel

  • Angular

Map

Field App

  • React Native

Mobile

GraphQL API

  • GraphQL Yoga
  • WebSocket

Live Data and Subscriptions

Database

  • PostgreSQL
  • PostGIS

Per-Tenant Data

Cache

  • Redis

Real-Time Events

Project details
  • Angular
  • TypeScript
  • GraphQL
  • Node.js
  • Prisma
  • PostgreSQL
  • PostGIS
  • Redis
  • Firebase
PESTPOINT · 2020 – PRESENT

Pestpoint E-Commerce Store

An e-commerce platform for biocidal products. Product catalog, cart, orders, payment through a 3D Secure virtual POS, shipping notifications and an admin panel, all in a single Laravel application.

Project details
  • Laravel
  • PHP
  • Tailwind CSS
  • PostgreSQL
  • Payment Integration
  • Vite
  • Maizzle
  • Docker
All projects
Experience

From 1992 to Today

  1. 1992

    First Line of Code

    I discovered software.

  2. 2006

    Yeşilonline

    I founded my own agency and ran it for eleven years.

  3. 2016

    GraphQL

    I started using GraphQL in production.

  4. 2018

    IoT and Embedded

    Smart home systems at Votec: sensors and embedded Linux.

  5. 2020

    Biocidal and Pestpoint

    I designed the Biocidal architecture from scratch and started developing Pestpoint.

  6. 2025

    KillReport

    A real-time, queue-based analytics platform for the EVE Online community.

  1. 2025today

    Software Architect

    KillReport · EVE Online community tool

    1 yr 1 mo
  2. 2020today

    Principal Software Engineer & Architect

    Pestpoint · Full stack Laravel

    6 yrs 3 mos
  3. 2020today

    Software Architect

    Biocidal · Abe Biyosidal

    6 yrs 6 mos

Full experienceLinkedIn

Contact

Have a Project in Mind? Let's Talk.

Fill in the form and I will get back to you within 1 business day. The first call is free and takes 30 minutes. If you prefer email:

Once the scope is clear, I can start within 1 week.

Your message reaches only me; your address is never shared. Details are in the privacy policy (in Turkish).