STATION F · 21 hours ago
SENIOR BLOCKCHAIN ENGINEER
Paris, NY
Full-time
Hybrid
Senior Level, Lead/Staff
$160K/yr - $240K/yr
8+ years expDfns is the leading Wallets-as-a-Service (WaaS) platform, helping fintechs, institutions, and enterprises simplify digital asset management and securely onboard users onchain. They are seeking a Senior Blockchain Engineer to design, develop, and scale components that connect their platform to every blockchain network, focusing on indexing, data pipelines, and smart contracts.
Business DevelopmentIncubatorsInternet
Responsibilities
Design and implement blockchain indexers, data pipelines, and integrations
Develop and maintain smart contracts with a focus on security and performance
Build APIs and services that expose onchain data for wallets and financial apps
Troubleshoot indexing issues, resolve performance bottlenecks, and ensure reliability
Collaborate with product and research to prioritize new blockchain integrations
Contribute to CI/CD, monitoring, and observability for blockchain services
Document systems, share knowledge, and support technical discussions with partners
Qualification
Required
8+ years of software engineering experience, with 2+ in blockchain development
Strong in TypeScript, plus ideally one systems language (Rust, Go, C++)
Proven experience building blockchain indexers, explorers, or related tooling
Skilled in designing and auditing smart contracts (EVM and non-EVM a plus)
Familiar with multiple blockchain ecosystems, both public (Ethereum, Solana, Cosmos, etc.) and private (Besu, Canton, R3 Corda, etc.)
Expertise with databases (PostgreSQL, DynamoDB, NoSQL) and data pipelines
Strong understanding of blockchain security, cryptography, and consensus models
Clear communicator with experience collaborating across product and infrastructure
Preferred
Design and implement blockchain indexers, data pipelines, and integrations
Develop and maintain smart contracts with a focus on security and performance
Build APIs and services that expose onchain data for wallets and financial apps
Troubleshoot indexing issues, resolve performance bottlenecks, and ensure reliability
Collaborate with product and research to prioritize new blockchain integrations
Contribute to CI/CD, monitoring, and observability for blockchain services
Document systems, share knowledge, and support technical discussions with partners
Benefits
Healthcare
Travel expenses
Company
STATION F
STATION F is a business incubator for startups.
11-50 employees
Funding
Current Stage
Early StageLeadership Team
Kaan Armagan
Founder in Residence
Romain LAURENT
Founder in Residence
Recent News
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