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
Inkling 2 Small: 594 Billion Parameters, 17 Billion at Work, Weights Promised Next Week
Sheet 2 of 4 · Lab notes

Essays, tutorials, and the weekly Wire.

Note 061
The Wire · AI · Nov 08 · 6 min
Inkling 2 Small: 594 Billion Parameters, 17 Billion at Work, Weights Promised Next Week

Thinking Machines launched Inkling 2 Small on November 5, a 594B-parameter MoE with 17B active, on Tinker only. Its self-reported scores are solid, not dominant; the real test is the Apache 2.0 weights promised for next week.

Read →
Note 058
The Wire · Infra · Nov 07 · 7 min
Google's $17 Billion Wyoming Campus Brings Its Own Power Plant

Google confirmed a $17 billion data center near Cheyenne on November 5, fed largely by a gas-fired private microgrid that includes AEP's 702 MW Bloom fuel-cell plant. The grid queue is what it routes around.

Read →
Note 057
The Wire · Nov 07 · 7 min
The AI Trade Meets the Ballot Box: a $2.3 Trillion Thursday and a Cautious Friday

On November 5 the Nasdaq 100 fell more than 6% and chip stocks 12% as markets repriced the AI buildout after the midterms. Friday's bounce was partial; the open question is now electricity, not models.

Read →
Note 060
The Wire · Infra · Nov 06 · 6 min
The Freezer Aisle Is an Attack Surface Now: US Agencies Warn on Refrigeration Controllers

On November 5, CISA, the FBI and three other US agencies warned that hackers are targeting refrigeration controllers worldwide, after supermarkets in at least nine European countries binned food from freezers set to 50°C.

Read →
Note 059
The Wire · Tooling · Nov 06 · 6 min
Atlassian Beat the Quarter and Got Punished for the Slope

Atlassian topped Q1 FY27 estimates, then guided cloud growth from 31% to about 27% and the stock gave back much of its autumn rally. The numbers, the Data Center hangover, and what agents mean for seat-priced Jira.

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.