Blockchain Infrastructure Engineer Jobs

Blockchain Data Infrastructure Engineer

From $200/yr

Blockchain Data Infrastructure Engineer Company: Kednus Employment Type: Full-time / Part-time / Contract Work Arrangement: Remote Experience Level: Senior (5–7 years) Education: Associate degree or equivalent experience Role Purpose Kednus is building institutional-grade blockchain financial infrastructure. As a Blockchain Data Infrastructure Engineer , you will own the blockchain data layer that transforms complex, fragmented multi-chain activity into standardized, reconciled, and audit-ready financial records. You will design and build systems that make blockchain data reliable, structured, and usable for accounting, analytics, and compliance across 200+ blockchains. Key Responsibilities * Build scalable ingestion pipelines for blockchain, wallet, exchange, DeFi, custodian, and off-chain transaction data. * Normalize and standardize transactions across multiple chains, token standards, smart contracts, NFTs, stablecoins, and DeFi protocols. * Develop classification systems for blockchain activities such as swaps, transfers, staking, lending, bridging, gas fees, rewards, liquidations, and contract interactions. * Implement wallet-level cost basis tracking, entity mapping, reconciliation, and sub-ledger generation. * Design and maintain chain adapters and robust data quality systems (duplicate detection, missing data handling, failed transactions, and consistency checks). * Collaborate with product and accounting teams to translate blockchain events into finance-grade transaction categories. * Build monitoring and alerting systems for indexing health, chain availability, reorgs, API latency, and provider outages. * Ensure data accuracy and reliability across large-scale multi-chain datasets powering institutional financial reporting. Required Qualifications * 5+ years of experience in data engineering, blockchain infrastructure, crypto accounting systems, or distributed systems. * Strong understanding of blockchain fundamentals including wallets, smart contracts, token standards, RPC nodes, indexers, and event logs. * Hands-on experience building ETL/ELT pipelines, streaming systems, or large-scale transactional data systems. * Proficiency in Python , SQL , and TypeScript (or similar languages such as Go or Rust). * Experience working with APIs, RPC endpoints, webhooks, and blockchain data providers. * Strong ability to design resilient systems that handle inconsistent, missing, or conflicting data across sources. Preferred Qualifications * Experience with major blockchain ecosystems such as Ethereum, EVM-compatible chains, Bitcoin, Solana, Cosmos, Polygon, Base, Arbitrum, Optimism, or Avalanche. * Familiarity with DeFi protocols, bridges, custodians, centralized exchanges, and tokenized real-world assets. * Experience with graph databases, entity resolution, wallet clustering, or fraud detection systems. * Understanding of crypto accounting principles and financial treatment of blockchain transactions. First 90-Day Success Outcomes * Deliver a prioritized roadmap for blockchain chain coverage expansion. * Build reusable and scalable chain adapter architecture. * Establish a standardized transaction normalization schema across supported chains. * Improve accuracy of transaction classification and reconciliation systems. * Strengthen overall data reliability for institutional-grade reporting.

Fireblocks Implementation Specialist – Blockchain Infrastructure Engineer

From $270/yr

Hiring Now Fireblocks Implementation Specialist – Blockchain Infrastructure Engineer Dallas, TX / San Francisco, CA(Remote/Hybrid) Contract Opportunity | Multiple Openings We are looking for senior engineers with strong experience in Fireblocks, HSM/MPC-based signing infrastructure, and large-scale blockchain application design to support enterprise-grade digital asset custody and transaction platforms. This is a highly technical backend/infrastructure-focused role — ideal for candidates with experience building secure blockchain systems in production environments. Core Requirements * Hands-on experience with Fireblocks APIs, SDKs, and webhooks * Strong understanding of HSM-based signing and secure key management * Experience implementing MPC (Multi-Party Computation) workflows * Proven ability to design and support large-scale blockchain applications * Strong backend engineering skills in Java, Python, Node.js, or Go * Experience with REST APIs, microservices, and distributed systems * Deep understanding of blockchain transaction lifecycle (Bitcoin / Ethereum) * Experience with AWS, Docker, Kubernetes, CI/CD pipelines Key Responsibilities * Build and support secure digital asset custody infrastructure * Develop wallet management and transaction orchestration services * Implement secure signing workflows and approval policies * Design scalable blockchain transaction systems with high availability * Troubleshoot production blockchain transaction and API integration issues * Collaborate with DevOps, Security, and Product teams on enterprise deployments * Support compliance and audit processes (SOC 2, ISO 27001, PCI) Preferred Background * Crypto exchanges / fintech / digital asset custody platforms * Fireblocks, BitGo, Coinbase Custody, MPC infrastructure * Blockchain infrastructure engineering * High-throughput transaction systems * Smart contracts / Solidity exposure Important: This role requires deep backend and blockchain infrastructure experience. Candidates with only frontend Web3 or basic dApp development experience may not be the right fit.

Engineering Manager at VC-backed blockchain infrastructure startup

This is a job that Jill, our AI Recruiter, is recruiting for on behalf of one of our customers. She will pick the best candidates from Jack's network. The next step is to speak to Jack. Engineering Manager Company Description: VC-backed blockchain infrastructure startup Job Description: Lead two high-performing engineering teams focused on critical data ingestion and reconciliation systems. You will drive operational excellence, coach engineers, and partner with product leadership to scale back-office infrastructure for the digital asset economy. This role focuses on team growth, execution, and process refinement within a fast-paced, remote-first engineering culture. Location: Remote Why this role is remarkable: • Lead mission-critical squads at the intersection of traditional finance and decentralized technology • Join a rapidly scaling organization backed by top-tier venture capital firms and industry leaders • Influence engineering culture and scale team operations with significant autonomy and equity potential What you will do: • Manage and coach approximately twelve engineers across two distinct squads to foster professional growth • Partner with Product and Staff Engineers to shape delivery roadmaps and technical priorities • Streamline engineering processes and remove friction to ensure consistent, high-quality delivery cycles The ideal candidate: • Extensive leadership experience managing engineering teams within a SaaS or high-growth startup environment • Strong technical background with the ability to challenge architectural decisions and maintain long-term quality • Proven track record of hiring and developing talent across distributed, international engineering teams Who are Jack & Jill? Ok, I'll go first. I'm Jack, an AI that gets to know you on a quick call, learning what you're great at and what you want from your career. Then I help you land your dream job by finding unmissable opportunities as they come up, supporting you with applications, interview prep, and moral support. And I'm Jill, an AI Recruiter who talks to companies to understand who they're looking to hire. Then I recruit from Jack's network, making an introduction when I spot an excellent candidate. Next steps Step 1. Visit our website Step 2. Click 'Talk to Jack' Step 3. Talk to Jack so he can understand your experience and ambitions Step 4. Jack will make sure Jill (the AI agent working for the company) considers you for this role Step 5. If Jill thinks you're a great fit and her client wants to meet you, they will make the introduction Step 6. If not, Jack will find you excellent alternatives. All for free We never post fake jobs This isn't a trick. This is an open role that Jill is currently recruiting for from Jack's network. Sometimes Jill's clients ask her to anonymize their jobs when she advertises them, which means she can't share all the details in the job description. We appreciate this can make them look a bit suspect, but there isn't much we can do about it. Give Jack a spin! You could land this role. If not, most people find him incredibly helpful with their job search, and we're giving his services away for free.

Blockchain Infrastructure Engineer

Tempo is a layer-1 blockchain purpose-built for stablecoins and real-world payments, born from Stripe’s experience in global payments and Paradigm’s expertise in crypto tech. Tempo’s payment-first design provides a scalable, low-cost predictable backbone that meets the needs of high-volume payment use cases. Our goal is to move money reliably, cheaply, and at scale. Our north star is simplicity for users: fintechs, traditional banks, merchants, platforms, and anyone else looking to move their payments into the 21st century. We’re building Tempo with design partners who are global leaders in AI, e-commerce, and financial services: Anthropic, Coupang, Deutsche Bank, DoorDash, Mercury, Nubank, OpenAI, Revolut, Shopify, Standard Chartered, Visa, and more. We’re a team of crypto-optimists, building the infrastructure needed to bring real, substantial economic flows onchain. Our team primarily works in-person out of our San Francisco and NYC offices (with remote flexibility for engineer roles). We like to move fast and swing for the fences — join us! The Role You’ll build out Tempo’s infrastructure stack and ensure the engineering team can ship effectively and efficiently. This is an opportunity to work on cutting-edge technology at the frontier of crypto. Responsibilities • Implement and manage the infrastructure that allows the engineering team to ship quickly and effectively • Proactively identify and eliminate bottlenecks in the devops process to ensure optimal developer velocity • Maintaining Tempo chain reliability, validator infrastructure, explorer reliability and more • Improve Tempo core developer experience • Helping onboard the largest enterprises directly into crypto. Educate and help them run a validators. • Working at the frontier of crypto performance Qualifications • Proven experience maintaining and scaling bare metal servers and cloud environments for production systems • Proficient at building tooling and scripts using Rust, Go or Python • Deep expertise deploying Kubernetes within production environments and working with IaC and configuration management tools like Terraform, Helm and ArgoCD • Skilled at deploying monitoring, alerting and observability systems (e.g., Prometheus, Grafana), securing and hardening those systems, and troubleshooting issues with engineers • Knowledgeable about Linux and networking, and troubleshooting on Linux systems • Familiarity with blockchain infrastructure, particularly the Ethereum ecosystem Attributes • High motor • Razor-sharp thinker with precise command of language • Concise, evidence-based communicator • Excellent organizational and logistical skills • Intense curiosity and open-mindedness • Scrappiness; willingness to roll up sleeves • Growth mindset #J-18808-Ljbffr

Blockchain Engineer - Protocol & Infrastructure

Blockchain Engineer - Protocol & Infrastructure Location: Remote / Hybrid / On-site About the Role: We are seeking a Blockchain Engineer to design and implement the core infrastructure for next-generation blockchain networks. This role involves deep protocol development, cryptographic security, and decentralized system architecture. Responsibilities: • Develop Layer 1 and Layer 2 blockchain infrastructure. • Improve consensus mechanisms and network scalability. • Implement cryptographic algorithms and security enhancements. • Work with cross-functional teams to drive blockchain adoption. Requirements: • Proficiency in Rust, Go, or C++. • Deep understanding of consensus algorithms (PoS, PoW, DAGs, etc.). • Experience with cryptographic techniques (zero-knowledge proofs, elliptic curve cryptography). • Previous experience with blockchain frameworks (Substrate, Cosmos SDK, Tendermint).

Blockchain Engineer - Protocol & Infrastructure

Blockchain Engineer - Protocol & Infrastructure Location: Remote / Hybrid / On-site About the Role: We are seeking a Blockchain Engineer to design and implement the core infrastructure for next-generation blockchain networks. This role involves deep protocol development, cryptographic security, and decentralized system architecture. Responsibilities: • Develop Layer 1 and Layer 2 blockchain infrastructure. • Improve consensus mechanisms and network scalability. • Implement cryptographic algorithms and security enhancements. • Work with cross-functional teams to drive blockchain adoption. Requirements: • Proficiency in Rust, Go, or C++. • Deep understanding of consensus algorithms (PoS, PoW, DAGs, etc.). • Experience with cryptographic techniques (zero-knowledge proofs, elliptic curve cryptography). • Previous experience with blockchain frameworks (Substrate, Cosmos SDK, Tendermint).