Senior Database Engineer @CITA LABS
Software Development
Salary unspecified
Remote Location
Employment Type part-time
Posted 1wk ago

[Hiring] Senior Database Engineer @CITA LABS

1wk ago - CITA LABS is hiring a remote Senior Database Engineer. πŸ’Έ Salary: unspecified πŸ“Location: Singapore

Role Description

As a Senior Database Engineer at CITA Lab, you will be responsible for designing and maintaining high-performance, highly available, and reliable database systems supporting blockchain, cryptocurrency, and financial applications.

  • Design and maintain scalable database architectures for crypto exchanges, wallets, payment systems, and other financial applications.
  • Design highly available and fault-tolerant database infrastructure suitable for production-critical systems.
  • Optimize complex SQL queries, indexes, schemas, and execution plans for high-volume workloads.
  • Diagnose and resolve database performance bottlenecks in production environments.
  • Design reliable data models for financial transactions, balances, ledgers, deposits, withdrawals, and blockchain-related data.
  • Ensure strong transactional integrity and consistency across distributed systems.
  • Develop strategies for replication, partitioning, sharding, clustering, and horizontal scaling.
  • Design and maintain database backup, restore, disaster-recovery, and point-in-time recovery strategies.
  • Implement database monitoring, alerting, capacity planning, and performance analysis.
  • Work closely with backend engineers on transaction boundaries, locking strategies, concurrency control, and efficient database access patterns.
  • Design safe database migration and schema-evolution strategies with minimal or zero production downtime.
  • Identify and resolve deadlocks, lock contention, replication lag, slow queries, connection exhaustion, and other production database issues.
  • Participate in architecture reviews and provide guidance on database technology selection.
  • Establish database security best practices, including access control, encryption, auditing, secrets management, and least-privilege policies.
  • Participate in incident response, root-cause analysis, and post-incident improvements.
  • Review database-related code and mentor engineers on database design and performance best practices.

Qualifications

  • 7+ years of professional experience in database engineering, backend infrastructure, DBA, or related roles.
  • Strong production experience with relational databases, particularly PostgreSQL and/or MySQL.
  • Deep understanding of SQL optimization, indexing strategies, query execution plans, and database internals.
  • Strong knowledge of ACID transactions, isolation levels, MVCC, locking, deadlocks, and concurrency control.
  • Experience designing databases for high-throughput transactional systems.
  • Hands-on experience with replication, high availability, failover, backup, and disaster recovery.
  • Experience designing and executing large-scale database migrations with minimal downtime.
  • Strong understanding of database monitoring and production troubleshooting.
  • Experience operating databases in cloud environments such as AWS, GCP, or Azure.
  • Familiarity with infrastructure automation and modern DevOps practices.
  • Strong understanding of database security and access-control principles.
  • Ability to investigate complex production issues independently.
  • Strong communication skills and ability to collaborate with distributed engineering teams.

Requirements

  • Nice-to-have: Cryptocurrency exchanges
  • Nice-to-have: Blockchain infrastructure
  • Nice-to-have: FinTech or payment platforms
  • Nice-to-have: Banking or financial systems
  • Nice-to-have: Trading platforms
  • Nice-to-have: Wallet or custody systems
  • Nice-to-have: High-frequency or high-volume transactional systems
  • Nice-to-have: Financial ledger systems

Company Description

Founded in Singapore in April 2026, CITA Lab is a dynamic software development startup dedicated to building high-quality, custom blockchain-related products tailored specifically to our customers' requirements.

  • Diverse product lineup includes centralized/decentralized cryptocurrency exchange solutions, secure crypto wallets, smart contracts, dApps, and more.
  • We turn complex blockchain capabilities into seamless, secure, and intuitive user experiences for clients worldwide.
Before You Apply
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remote Be aware of the location restriction for this remote position: Singapore
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Senior Database Engineer @CITA LABS
Software Development
Salary unspecified
Remote Location
Employment Type part-time
Posted 1wk ago
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