Backend Jobs in Web3

Role Overview Job Title: Senior Software EngineerLocation: Santa Monica, California We’re seeking a seasoned engineer to help build the backbone of the Internet of Money. In this role, you’ll architect and scale the systems behind global remittances, digital wallets, and decentralized financial infrastructure—leveraging blockchain technology and modern backend architecture. You’ll collaborate with cross-functional teams around the world to deliver secure, high-performance solutions that support our expanding user base. This is a unique opportunity to shape the future of accessible, telecom-integrated financial services on a truly global scale.

Please note: This is not a remote position. The role requires regular, in-person work at our Santa Monica office. *To help us confirm you're a real person and not a bot, please select "doughnut" when asked about your favorite snack during the application process.

Who We Are Telcoin is a rapidly growing fintech startup headquartered in Singapore. We leverage blockchain technology to deliver fast, secure, and low-cost financial products—including mobile-based remittances and digital asset solutions. Currently operating in 17+ countries, Telcoin is building a global platform that connects users with modern financial tools through a telecom-integrated approach. Our team includes telecom executives, startup veterans, finance professionals, and world-class engineers. We are now looking for a Senior Backend Engineer to help scale our backend infrastructure and core remittance systems.

What You’ll Be Doing

Design, build, and maintain backend systems and APIs for Telcoin’s remittance platform and digital wallet

Build and optimize high-performance microservices capable of processing 20,000+ requests per second

Interface with blockchain components, mobile apps (iOS/Android), and third-party APIs (e.g., KYC, fraud, banking systems)

Support integration of external financial systems, including banks and payment partners

Implement secure solutions to manage KYC, PII, and financial transaction data

Collaborate across engineering, product, and compliance teams globally to deliver features securely and efficiently

Maintain observability, monitoring, and support practices for production systems

What We’re Looking For

5+ years of backend or systems engineering experience

Strong experience with Rust, or deep expertise in another strongly typed systems language (e.g., C++, Go)

Familiarity with cloud infrastructure (AWS, GCP), Docker, Kubernetes, and Terraform

Proficiency in SQL and experience working with large-scale data pipelines

Demonstrated ability to write secure, high-performance, maintainable code

Comfort operating in fast-paced, startup environments with global, distributed teams

Strong communication skills, especially across time zones

Nice to Have

Experience with blockchain node development (e.g., Substrate) or DeFi protocols

Prior exposure to financial services, digital wallets, or remittance products

Background working with KYC/AML, compliance tools, or fraud prevention systems

Familiarity with event-driven systems, Kafka, or analytics pipelines

What Telcoin Offers

Competitive base salary: $100,000 - $150,000 (depending on experience) + annual bonus and stock option plan

Medical, dental, and vision insurance – 100% employer-sponsored for employee and family

401(k) plan with no waiting period

Unlimited PTO to support work/life balance

Global exposure across fintech and digital assets

Dynamic, entrepreneurial environment with room to grow