Nikola J.

Freelancer

Senior Full-Stack and Blockchain Engineer

90% Job Success

View on Upwork

WorldTop 0.06%

SerbiaTop 0.08%

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$13k

MRR

est. monthly

#662

World rank

of 1,140,396

$105k

Lifetime earnings

all-time

Total jobs

completed

About

I'm a Blockchain Engineer with 5+ years of experience, capable of writing smart contracts, building backend and developing frontend.
I'm an expert in writing smart contracts in Solidity/Rust/Move and web3 integration, and building backend in Node.js, Python, Rust and Go.
I'm also experienced in developing frontend in React.js/Next.js with Tailwind CSS.
I've built nearly all kinds of dApps including DeFi, DEX, NFT market place, P2E games on EVM-compatible chains, Solana, Stellar, Aptos/Sui and even Cosmos chains.
I've expertise in building custom chains by forking Cosmos SDK or Evmos, with blockscout/big dipper forked block explorer.

Rankings

Where Nikola J. ranks by monthly revenue, worldwide, in Serbia, and in every Upwork skill it competes in.

World#662 / 1,140,396Top 0.06%

Serbia#5 / 6,071Top 0.08%

Per-skill ranks are still syncing. We have Nikola J.'s world and country position and are still collecting their per-skill breakdown, check back soon.

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Freelancer snapshot

Rating90% Job Success

Skills tracked0

Skills

Nikola J.'s per-skill breakdown has not been synced yet. We are still collecting their skill data, check back soon.

MRR trendSoon

Last 12 weeks

Coming soon

Competitors on the board

Who ranks just above and below by MRR across all freelancers.

This freelancer is #662 of 1,140,396 across all freelancers.

RankFreelancerMRRMRR trend

660

Andrey R.

Google Script, Workspace & Cloud, API Integration & Workflow Engineer

$13k

Soon

View

661

Robert B.

Healthcare FHIR HL7 API data engineer and developer

$13k

Soon

View

662

Nikola J.

Senior Full-Stack and Blockchain Engineer

$13k

Soon

View

663

SP S.

AI Engineer | AI Agents | LLM & RAG | Full Stack | Mobile Apps

$13k

Soon

View

664

Leticia D.

AI-Enabled Full-Stack Development | SaaS | LMS | .NET | Web Apps | EHR

$13k

Soon

View

MRR benchmark

Nikola J. earns more than 99.94% of all freelancers we track.

Top 0.06%

among all freelancers we track

$0–$500

37%

$500–$1k

12%

$1k–$2.5k

16%

$2.5k–$5k

12%

$5k–$10k

11%

$10k–$25k

$25k–$50k

$50k+

Nikola J.'s bracket · $13k

You37%

$0–$500

You12%

$500–$1k

You16%

$1k–$2.5k

You12%

$2.5k–$5k

You11%

$5k–$10k

You9%

$10k–$25k

You3%

$25k–$50k

You1%

$50k+

Nikola J. earns an estimated $13k/mo. That's 11.7× the typical freelancer and more than 99.94% of everyone we track.

Freelancers with no recent MRR are excluded. Only the 183,376 freelancers with active monthly revenue are ranked here.

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MRR is an estimate from Upwork's public figures - not an Upwork-official number.