Upwork home
Sign up

Hire the Best Apache Kafka Developers
in South Korea

More than 3,000 reviews on G2
Rating is 4.5 out of 5.
4.5/5
of Upwork by G2 peer reviewers
Hire freelancers
Donggeon L.

Seoul, South Korea

$55/hr
5.0
25 jobs

🔹 What I build I build production backend systems that handle real-time distributed traffic at scale using Golang, Python and Node.js. I focus on systems where latency, reliability, and throughput directly impact production outcomes under high concurrency and event-driven workloads. I design and implement blockchain integration layers that connect backend systems with Ethereum-based transaction and wallet workflows in production environments. 🔹 Production impact Focused on building production-grade systems that improve reliability, throughput, and system resilience under real-world traffic conditions. Built real-time backend systems using Go, Node.js, and Python with Redis Pub/Sub and SSE for high-volume event-driven communication Designed and stabilized high-throughput API systems and microservice architectures under concurrent production traffic Developed blockchain transaction and wallet integration systems using Node.js and Ethereum-based stacks in production environments Implemented smart contract interaction layers and backend services for token and transaction workflows Built payment and external API integration systems with strong consistency, idempotency, and failure recovery requirements Operated cloud backend systems on AWS/GCP with scaling, monitoring, and production observability 🔹 Core engineering focus Distributed backend systems (Go / Node.js / Python) Event-driven architecture (Redis Pub/Sub, SSE) Blockchain transaction systems (Ethereum / Web3 integration) Backend ↔ on-chain data flow design High-concurrency API systems Production reliability, scalability, and latency optimization 🔹 How I work I identify bottlenecks in production systems across latency, throughput, and data consistency. I implement changes that improve system stability and performance across backend and blockchain layers without disrupting production traffic. 🔹 Availability Available for backend architecture, blockchain integration, system scaling, and production refactoring projects.

  • Apache Kafka
  • Docker
  • Golang
  • Python
  • Kubernetes
  • SQL
  • Redis
  • Node.js
  • Solidity
  • Hyperledger Fabric
  • Blockchain
  • web3.js
  • NoSQL Database
  • AWS Development
  • CI/CD
  • Web3
  • DeFi
Sign up to see more

How it works

Post a job for freePost a job

Tell us what you need. Create your own job post or generate one with AI then filter talent matches.

Hire top talent fast

Consult, interview, and hire quickly, so you can meet the freelancers you're excited about.

Collaborate easily

Use Upwork to chat or video call, share files, and track project progress right from the app.

Payment simplified

Manage payments in one place with flexible billing options. Only pay for approved work, hourly or by milestone.

Don't just take our word for it

How do I hire a Apache Kafka Developer in South Korea on Upwork?

You can hire a Apache Kafka Developer in South Korea on Upwork in four simple steps:

  • Create a job post tailored to your Apache Kafka Developer project scope. We'll walk you through the process step by step.
  • Browse top Apache Kafka Developer talent on Upwork and invite them to your project.
  • Once the proposals start flowing in, create a shortlist of top Apache Kafka Developer profiles and interview.
  • Hire the right Apache Kafka Developer for your project from Upwork, the world's largest work marketplace.

At Upwork, we believe talent staffing should be easy.

How much does it cost to hire a Apache Kafka Developer?

Rates charged by Apache Kafka Developers on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.

Why hire a Apache Kafka Developer in South Korea on Upwork?

As the world's work marketplace, we connect highly-skilled freelance Apache Kafka Developers and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Apache Kafka Developer team you need to succeed.

Can I hire a Apache Kafka Developer in South Korea within 24 hours on Upwork?

Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Apache Kafka Developer proposals within 24 hours of posting a job description.