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Senior Blockchain Developer

Not Disclosed

Job Description & Details

The team is looking for a seasoned blockchain engineer who can actually ship production‑grade smart contracts and keep the whole stack resilient. If you thrive on designing secure, scalable distributed systems and aren’t afraid to roll up your sleeves on both the protocol and cloud side, this role is worth a look.

What You'll Actually Be Doing

You’ll spend most of your day architecting permissioned DLT solutions, writing Solidity (or other contract languages) and wiring them to off‑chain services via oracles. Expect to build integration libraries that talk to internal APIs, push code through CI/CD pipelines on Azure or AWS, and mentor junior engineers on best‑practice patterns. The job also demands you keep an eye on data‑protection compliance for digital payments, so security reviews become a routine part of your sprint.

The Core Tech Stack

The must‑know pieces are Solidity for smart contracts, Java Spring Boot for the surrounding services, and a solid grasp of cryptography primitives that keep the ledger tamper‑proof. You’ll also need to be comfortable with Node.js or Python when stitching together oracle feeds, and have hands‑on experience deploying containers or VMs on Azure/AWS. The stack is deliberately polyglot because the platform needs to handle high‑throughput transactions while staying fault‑tolerant.

Interview Expectations

  1. Design a scalable permissioned blockchain network: they’ll want you to outline node topology, consensus choice, and how you’d handle shard‑level fault tolerance. They’re looking for depth in both theory and practical trade‑offs, not just buzzwords.
  2. Optimize a Solidity contract for gas: expect a code snippet and be ready to explain how you’d refactor it to reduce gas costs while preserving security guarantees. The interviewer wants proof you can write efficient, audit‑ready contracts.

Application Advice

Tailor your resume to hit keywords like “Solidity”, “Java Springboot”, “Azure/AWS”, “oracle development”, and “cryptography”. Highlight any end‑to‑end blockchain projects where you led the full SDLC, especially if you mention CI/CD pipelines or fault‑tolerant architecture. A concise bullet that says “Designed and deployed permissioned DLT solution on Azure with 99.99% uptime” will get past most ATS filters.