Principal Architect
KAST is a stablecoin platform that provides USD-denominated accounts, payment cards, and on/off-ramp channels, accepted at over 100 million merchants and ATMs globally. It enables users to create a virtual card in minutes and spend stablecoins like USDT, USDC, and USDe.
Investors
Projects
About KAST
KAST aims to simplify finances for global citizens by making it easy to save, send, and spend stablecoins anywhere in the world. Users can go from sign-up to spending in just 2-3 minutes without needing a bank account, with a variety of IDs accepted. The platform supports stablecoins like USDT, USDC & USDe, with more tokens planned. KAST cards are compatible with Apple Pay and Google Pay and are accepted by over 100 million merchants globally. The company emphasizes privacy and security, stating that all funds are fully reserved and held using leading Web3 technologies.
Skills
About the Role
You will be the primary technical authority for KAST's system design, ensuring high-throughput transaction engines and a complex microservices ecosystem remain resilient, performant, and secure under massive load. You will partner with Engineering, Product, and Security leadership to bridge the gap between business growth and technical execution, setting the standards for how the company builds, deploys, and evolves its transactional infrastructure on AWS.
Requirements
- 10+ years of software engineering experience architecting large-scale payment platforms, ledger systems, or high-volume financial infrastructure
- Deep expertise in microservices architecture, event-driven design, and distributed systems trade-offs
- Extensive experience designing and operating complex, high-traffic applications on AWS
- Strong understanding of database patterns for financial data, including transaction atomicity and consistency models
- Demonstrated ability to influence technical direction across multiple teams and drive consensus on architectural trade-offs
- Knowledge of designing for security within a regulated industry
Responsibilities
- Define and drive the long-term technical architecture for KAST
- Lead the design and review of distributed systems for fault tolerance, high availability, and scalability on AWS
- Architect critical path systems including payment processing, ledger management, and financial data consistency models
- Define architecture principles, coding standards, and deployment patterns (CI/CD, IaC)
- Lead the AWS cloud strategy, optimizing resource utilization, latency, and cost
- Integrate security-by-design principles to meet financial compliance standards (PCI-DSS, SOC2)
- Mentor senior engineers, lead architecture review boards, and guide major technical decisions