🔧 Senior Blockchain Infrastructure Developer (EVM & Consensus Layer)

💰 Salary: Competitive (Salary is not a big factor here if you have the desired skills and experience)
💼 Experience: 3+ Years
⏰ Type: Full-Time (Desk Job)
📍 Location: Floor 3, House 353, Road 5, Avenue 4, DOHS Mirpur, Dhaka 1216

🌐 Role Overview

Rainbow-Themes is seeking a Senior Blockchain Infrastructure Developer to lead the deployment, maintenance, and optimization of Ethereum and EVM-compatible networks. If you’re deeply experienced in validator client operations, consensus layer mechanics, and infrastructure at the protocol level—this is your opportunity to build and maintain the backbone of cutting-edge decentralized systems.

🛠 Key Responsibilities

• Deploy, manage, and monitor Ethereum and EVM-compatible full nodes and consensus clients across both mainnet and testnet environments.

• Configure and optimize performance of leading clients such as Lighthouse, Prysm, Teku, Nimbus, and Lodestar.

• Develop tooling for extracting, indexing, and querying blockchain state and transaction data.

• Build backend services to power validator monitoring, performance analytics, and event-driven systems.

• Work with JSON-RPC, WebSockets, and build real-time data pipelines.

• Troubleshoot complex consensus issues including finality delays, fork-resolution, and slashing protection.

• Design high-availability node infrastructure with robust backup, failover, and load balancing strategies.

• Optimize cloud and bare-metal deployments for performance, resilience, and security.

✅ Required Skills & Qualifications

• 3+ years of experience working with blockchain infrastructure, especially Ethereum or EVM-compatible chains.

• In-depth familiarity with at least one Ethereum consensus client:

  • Lighthouse (Rust)

  • Prysm (Go)

  • Teku (Java)

  • Nimbus (Nim)

  • Lodestar (TypeScript)

• Strong understanding of Ethereum’s Proof-of-Stake consensus mechanism.

• Proven experience running full nodes, archive nodes, and validator clients.

• Expertise in working with JSON-RPC, WebSocket APIs, and Ethereum data structures.

• Backend development/scripting in Python, Rust, or Go.

• Experience with monitoring and observability tools like Prometheus, Grafana, or ELK Stack.

• Skilled in Docker, Linux system administration, and cloud infrastructure (AWS, GCP, or bare-metal).

🌟 Bonus (Preferred but not required)

• Contributions to Ethereum consensus R&D or open-source repos.

• Knowledge of slashing protection, key management, and validator economics.

• Experience with custom chain indexers or platforms like The Graph.

• Involvement in staking-as-a-service or DePIN networks.

• Infrastructure experience for Layer 2 networks or rollup architectures.

🌈 Why Rainbow-Themes?

We’re innovators in the blockchain space, building world-class tools and infrastructure for next-gen decentralized applications. Here’s what we offer:

• 💸 Competitive Salary + Yearly Performance Increments

• 🏆 Project-Based Bonuses

• 🍱 Subsidized Lunch & Refreshments

• 🕺 Two-Day Weekend (Friday & Saturday)

• 🌴 Annual Retreats & Team Activities

• 🛠 Exposure to Large-Scale Blockchain Infrastructure Projects

🕒 Work Schedule

• Days: Sunday to Thursday

• Hours: 09:00 AM – 6:00 PM

• Location: DOHS Mirpur, Dhaka (In-Office Only)

📨 How to Apply

Please send your resume and GitHub/GitLab profile with any open-source infrastructure tools, validator dashboards, or monitoring systems you’ve developed. A short cover letter highlighting your experience at the consensus layer or node operations is highly recommended.

👉 Apply now to help shape the future of decentralized infrastructure with Rainbow-Themes.