Blockchain production support requires a specialized skill set that combines traditional IT operations expertise with an understanding of distributed ledger technology (DLT) and cryptocurrency ecosystems. This role focuses on maintaining the stability, performance, and security of blockchain networks and applications, which often involve unique challenges related to decentralization, consensus mechanisms, and cryptographic security.
Responsibilities:
- Blockchain Fundamentals:
- Core Concepts: Deep understanding of blockchain principles (e.g., distributed ledgers, immutability, consensus mechanisms like Proof-of-Work, Proof-of-Stake, Byzantine Fault Tolerance).
- Network Architectures: Familiarity with different blockchain network types (public, private, consortium) and their operational implications.
- Cryptocurrency Basics: Knowledge of cryptographic hashing, digital signatures, public-key cryptography, and their application in blockchain.
- Platform Expertise:
- Specific Blockchain Protocols: Hands-on experience with popular blockchain platforms (e.g., Ethereum, Hyperledger Fabric, Corda, Solana, Avalanche, Binance Smart Chain). This includes understanding their architecture, smart contract languages (e.g., Solidity for Ethereum), and client software (e.g., Geth, Parity).
- Wallet Management: Knowledge of various wallet types (hot, cold, hardware, software) and best practices for their security and management.
- Node Operations: Experience in deploying, configuring, and maintaining blockchain nodes (validator nodes, full nodes, light nodes).
- Smart Contracts:
- Deployment and Interaction: Ability to deploy and interact with smart contracts on various networks.
- Troubleshooting: Understanding common smart contract issues and how to diagnose them (e.g., gas limits, transaction failures, reentrancy attacks, oracle dependencies).
- Security Audits: Basic understanding of smart contract security vulnerabilities and audit reports.
System Administration & DevOps:- Operating Systems: Proficiency in Linux/Unix environments for server management.
- Containerization & Orchestration: Experience with Docker and Kubernetes for deploying and managing blockchain applications and nodes.
- Cloud Platforms: Experience with major cloud providers (AWS, Azure, GCP) for deploying and scaling blockchain infrastructure.
- Networking: Strong understanding of network protocols, firewalls, and secure network configurations relevant to distributed systems.
- Monitoring & Alerting:
- Blockchain Explorers: Proficiency in using blockchain explorers (e.g., Etherscan) for transaction analysis and network monitoring.
- Specialized Tools: Experience with blockchain-specific monitoring tools and metrics for node health, transaction throughput, and network congestion.
- General Monitoring Tools: Familiarity with traditional monitoring tools (e.g., Prometheus, Grafana, Splunk, ELK stack) for infrastructure and application performance.
Recommended Qualifications:
- 5-8 years experience in an Application Support role.
- Experience installing, configuring or supporting business applications.
- Experience with some programming languages and willingness/ability to learn.
- Advanced execution capabilities and ability to adjust quickly to changes and re-prioritization
- Effective written and verbal communications including ability to explain technical issues in simple terms that non-IT staff can understand.
- Demonstrated analytical skills
- Issue tracking and reporting using tools
- Knowledge/ experience of problem Management Tools.
- Good all-round technical skills
- Effectively share information with other support team members and with other technology teams
- Ability to plan and organize workload
- Consistently demonstrates clear and concise written and verbal communication skills
- Ability to communicate appropriately to relevant stakeholder
Education:
- Bachelor’s/University degree or equivalent experience
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Job Family Group: Technology------------------------------------------------------
Job Family:Applications Support------------------------------------------------------
Time Type:Full time------------------------------------------------------
Most Relevant Skills Please see the requirements listed above.------------------------------------------------------
Other Relevant Skills For complementary skills, please see above and/or contact the recruiter.------------------------------------------------------
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Skills Required
- 5-8 years experience in an Application Support role
- Experience installing, configuring or supporting business applications
- Experience with some programming languages
- Effective written and verbal communications
- Good all-round technical skills
- Bachelor's/University degree or equivalent experience
Citi Compensation & Benefits Highlights
The following summarizes recurring compensation and benefits themes identified from responses generated by popular LLMs to common candidate questions about Citi and has not been reviewed or approved by Citi.
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Healthcare Strength — Benefits coverage is positioned as comprehensive, including health, dental, and vision insurance plus on-site clinics, prescription drug support, and disability coverage. Family-building support such as fertility assistance is described as a notable differentiator within the overall package.
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Retirement Support — Retirement benefits are framed as strong, highlighted by a 401(k) with matching and additional plan options like a Roth 401(k). Financial support is reinforced through discounts and broader financial guidance resources tied to the benefits ecosystem.
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Wellbeing & Lifestyle Benefits — Wellbeing support extends beyond insurance through programs like an Employee Assistance Program, counseling/legal resources, and gym or wellness reimbursement. These offerings increase the perceived total rewards value even when cash compensation sentiment varies by role.
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