Mario Kranjec

I find what's slowing your team down, and fix that first.

Usually it's a team that needs a lead before it can hire one, or a legacy stack that's hard to change but earns your traffic from search. I'm Mario Kranjec, a senior backend engineer and contract tech lead for teams of 5–30 engineers. I join part-time or for a defined project, and work in your repo until your team can carry on without me.

Book a call30 minutes, free. No sales pitch.

100k
URLs migrated to Next.js for InYourPocket, with search rankings up after launch
2.45M
requests per second at peak on a top global sportswear brand's drop platform
7
engineers led as acting team lead at CargoX

What are you dealing with?

A fixed-price first stepStart with the Backend Health Check5 days in your code, CI and team, then a written report of the 5 things costing you most and how to fix each. Fixed price, credited in full if we keep working together. If it doesn't give you at least 3 changes you'd act on, you don't pay.

Case studies

How we can work together

Fractional
2–3 days a week as part of your team, until your permanent lead starts. Monthly, with 2 weeks' notice and no long contract.
Fixed-scope project
One defined outcome, such as a migration, with scope, price and timeline agreed upfront.

Based in Slovenia. Remote-first, working in EU time zones (CET). On-site visits by arrangement.

Mario Kranjec

I’ve spent more than ten years building production systems. Most recently I was tech lead on InYourPocket’s move from Symfony to Next.js, and acting team lead for seven engineers at CargoX. I work hands-on: in your standups and your planning as well as the code.

Outside client work I co-organise Spletne urice Maribor, Slovenia’s longest-running tech meetup.

Not sure which of these fits?

That's what the intro call is for. Tell me what's going on, and I'll tell you honestly whether I'm the right person to help. If it's a fit, I send a short written proposal.

Book a call30 minutes, free