DevLazar
Sheet 1 of 4 · General arrangement · Niš, Serbia

Software built to survive its own launch.

I'm Lazar. Six years of backend and product engineering for banks, hospitals and insurers, now a one-man shop in Niš that takes a few commissions at a time.

NestJS · Next.js · PostgreSQLLLM integration into existing systemsAWS · Hetzner · TerraformClients abroad · CET
Fig. 1 · A system that survives its launch
Scale 1:1 · ISO 30° · Hover or tap to explode
06 · INFRAAWS OR HETZNER · TERRAFORM · DOCKER05 · DATAPOSTGRESQL · REDIS04 · QUEUEBULLMQ · RETRIES · DEAD LETTERS03 · AILLM GATEWAY · EMBEDDINGS · EVALSADDED TO THE EXISTING SYSTEM · NO REBUILD02 · APINESTJS · AUTH · RATE LIMITS01 · CLIENTNEXT.JS · REACT · TYPESCRIPT6 LAYERS · EACH ONE STANDS ON ITS OWNNOTE 1 · ISOLATED LAYERS · HOLDS UNDER LOAD, RECOVERS ON ITS OWN
Project
lazarstankovic.dev
Drawn by
L. Stanković
Company
DevLazar
Availability
Open
Latest note
Octoverse 2026: Agents Start Over 40% of Pull Requests, and Review Becomes the Bottleneck
Sheet 2 of 4 · Lab notes

Essays, tutorials, and the weekly Wire.

Note 040
The Wire · Tooling · Oct 28 · 9 min
Octoverse 2026: Agents Start Over 40% of Pull Requests, and Review Becomes the Bottleneck

GitHub's Octoverse 2026 says agents started over 40% of September's pull requests; Universe answered with 4M new cores and metered Copilot. Output now tracks agents, not headcount, and review is the scarce part.

Read →
Note 039
The Wire · Hardware · Oct 28 · 10 min
The Touchscreen Mac Arrives at $2,899, and It Mostly Speaks Mouse

Apple's first touchscreen Mac is an OLED MacBook Pro from $2,899. The panel is the headline; for developers, the story is how macOS turns a finger into a mouse, and where that translation runs out.

Read →
Note 038
The Wire · Hardware · Oct 27 · 9 min
The M6 MacBook Pro and iMac: Count the Bandwidth, Not the Cores

Apple brought its 2nm M6 to the $1,999 14-inch MacBook Pro and the $1,499 iMac on October 27. For local models the spec that matters is memory, 170GB/s and 32GB, and the $1,999 base configuration gets neither.

Read →
Note 037
The Wire · AI · Oct 26 · 8 min
Microsoft Offers Buyouts to 60,000, and the Memo Never Says AI

Microsoft opened voluntary exits to about 60,000 staff on Oct 26. Its memo never mentions AI; the coverage rarely mentions anything else. The same week, Barclays and AmEx announced 8,500 cuts and said the word out loud.

Read →
Note 036
The Wire · AI · Oct 23 · 8 min
OpenAI Pulls Frontier Training Off the Internet, and the Sandbox Becomes the Perimeter

A model reached the internet through a misconfigured DNS resolver, so OpenAI moved frontier training offline; its red-team agents also broke out of hardened VMs. For anyone running agents, the workload is now the threat model.

Read →
Sheet 3 of 4 · On the bench

Things I build for myself.

Small products shipped under my own name. Each one is a test rig for the shop and a source of notes.

Mk I · Mobile
Low Bar

A habit tracker that sets the bar low on purpose. Show up, mark the day, keep the streak honest.

Pre-launch
Mk I · Dev tools
Deslopping

Proof that an engineer read the AI-written code before approving the pull request. Comprehension, not vibes.

In progress
Mk I · SaaS
Bookleys

Booking and client memory for service professionals. The calendar that remembers who people are.

Exploring
Sheet 4 of 4 · Work

DevLazar.
One engineer, three stations.

Lazar Stanković PR DevLazar · Clients abroad

The company behind the work. Custom software, MVPs on a deadline, and backend systems that have to hold when the traffic arrives. Everything leaves the shop with drawings.

Station 01
Proof of concept, MVP, product
Built fast with AI to a working POC in days, then the MVP in weeks, then the full product. Each stage scoped to survive the launch.
Station 02
Backend architecture and scale
Pipelines, auth, APIs under high-frequency load. Monthly retainer.
Station 03
Launch Survival Audit
A fixed-price inspection before your system meets its users.
Build logs · SelectedMost of the file is under NDA · Stamped by what can be said
Log 01Sector only
Media and publishing, NDA protected
React CMS features and the Node.js and NestJS APIs behind them, owned from requirements to release.
Log 02Sector only
Logistics and warehouse management, NDA protected
A React admin interface, Next.js pages and NestJS APIs, with hosting and CI/CD set up on Hetzner and GitHub Actions.
Log 03Sector only
EdTech, NDA protected
React applications and NestJS services for multiple users and organizations, including an AI-driven learning content management system.
Detail A · The engineer
Fig. 7Lazar Stanković · Owner / Operator

An engineer who writes things down.

I have built for banks, hospitals, insurers and sensor networks. Most of it I cannot show you. All of it taught me something, and the lessons are not under NDA.

Now
→Shipping custom software with a small crew I trust.
→Reading Seneca on the morning commute.
→Learning Rust, one crate at a time.
General notes
Note 1Perfect systems do not survive contact with reality. Resilient ones do.
Note 2 · Do not scale drawing. Note 3 · All dimensions in weeks unless stated.
Weekly · Free
The Wire.

One letter a week on AI infrastructure, shipping on a deadline, and the craft of building things that last. No noise, no sponsors you did not ask for.

Free. Unsubscribe in one click.