Web3 is a new paradigm

1. About BitFit Labs

We are building enterprise cryptocurrency wallet that combines advanced Multi-Party Computation (MPC) Threshold Signature Scheme (TSS) with an integrated local DEX aggregation engine.

This hybrid solution provides institutional-grade security for asset custody while enabling seamless, low-latency token swaps without relying on third-party APIs.

Core Features: 

- MPC TSS-based Wallet Infrastructure 

• Signature Scheme: 2/3 threshold signature distribution 
• Multi-chain Support: Bitcoin (BTC), XRP, Solana (SOL), EVM-compatible 
• chains (Ethereum, BNB Chain, Avalanche, Arbitrum, Polygon, etc.), TRON 
• Hardware Integration: Support for Ledger and Trezor hardware wallets 
• Secure Key Management: TSS nodes distributed across isolated 
• environments with HSM integration 

- Local EVM DEX Aggregator Engine 

• Customized Geth Client: Modified Geth node with integrated DEX aggregator functionality 
• On-chain Liquidity Indexing: Direct indexing of liquidity pools from multiple DEXs (Uniswap, SushiSwap, Curve, etc.) 
• Local Swap Simulation: EVM-based swap simulation to calculate optimal routes, slippage, and pricing 
• Zero Third-Party Dependencies: All aggregation logic executed locally for privacy and reliability 
• Low-Latency Routing: Sub-second swap path discovery and execution

2. Key Responsibilities

- Infrastructure & Environment Management 

• Design, build, and maintain secure, compliant, and highly available production and development environments using IaC on AWS 
• Set up and manage onpremise data center infrastructure with TEE (Trusted Execution Environment) capabilities for secure MPC key computation 
• Deploy and maintain all critical components: 

▪ MPC TSS nodes across multiple chains (BTC, XRP, SOL, EVM, TRON) 
▪ Customized Geth node with integrated DEX aggregator engine 
▪ Backend API servers for wallet operations and swap routing 
▪ Frontend web application 
▪ Blockchain full nodes for supported networks 

- Blockchain Infrastructure 

• Configure and monitor full node synchronization for Ethereum and other supported blockchains 
• Manage RPC endpoints and load balancing across multiple nodes 
• Ensure high availability of blockchain connectivity with failover mechanisms 
• Implement node health checks and automated recovery procedures 

- CI/CD & Deployment Automation 

• Design and optimize end-to-end CI/CD pipelines using GitHub Actions or GitLab CI 
• Automate the entire deployment lifecycle from code commit to secure production release 
• Implement blue-green deployments and canary releases for zero-downtime updates 
• Provide self-service build, test, deployment, and debugging toolchains for development teams 

- Monitoring & Observability 

• Build and maintain comprehensive monitoring, logging, alerting, and tracing systems (Prometheus, Grafana, ELK Stack, Jaeger)
• Monitor key metrics across all layers: infrastructure, blockchain nodes, MPC computation, DEX aggregation services, and application performance 
• Proactively identify and resolve potential issues to maintain SLA commitments 
• Set up dashboards for real-time visibility into system health, swap execution metrics, and wallet operations 

- Security & Compliance 

• Implement strict identity access control (IAM), network segmentation, and zero-trust principles 
• Integrate HSM/KMS for secure key management and MPC TSS operations 
• Conduct regular security scans, vulnerability assessments, and penetration testing 
• Design and enforce security policies for multi-tenant MPC infrastructure 
• Manage SSL/TLS certificates, Nginx reverse proxies, and firewall rules 

- High Availability & Disaster Recovery

• Design and implement cross-AZ/region disaster recovery and backup plan 
• Plan and execute regular disaster recovery drills 
• Optimize resource utilization and infrastructure costs 
• Ensure 99.9%+ uptime for critical wallet and swap services 

3. Requirements

- Experience: 5+ years of DevOps, SRE, or cloud infrastructure engineering experience with large-scale distributed systems 

- Cloud Platform: Expert-level knowledge of at least one major cloud provider (AWS, GCP , or Azure) and their managed services 

- Container Orchestration: Deep expertise in Docker and Kubernetes with significant production environment experience 

- CI/CD Tools: Proficiency with Jenkins, GitHub Actions, or GitLab CI/CD tools- Programming: Strong command of at least one programming or scripting language (Go, Python, Shell) for developing custom automation tools and scripts 

- Linux Administration: Solid experience with Ubuntu/RedHat server administration and troubleshooting 

- Networking: Strong understanding of networking concepts, firewalls, SSL/TLS, load balancing, and DNS 

- Monitoring Stack: Hands-on experience with Prometheus, Grafana, or equivalent monitoring solutions 

- Documentation: Excellent technical documentation and cross-team collaboration skills 

- Responsibility: Strong sense of ownership and accountability for system reliability


4. Preferred Qualifications 

- Blockchain Experience: 

• Direct experience operating Ethereum, Bitcoin, or other blockchain full nodes 
• Knowledge of Web3 technologies, smart contracts, and DeFi protocols 
• Understanding of MPC, cryptographic, and key management systems 
• Familiarity with HSM integration and hardware security modules 

- Advanced Infrastructure: 

• Experience with Istio, Linkerd, or other service mesh technologies 
• Chaos engineering practices and fault injection testing 
• Multi-cloud or hybrid cloud architecture experience 
• Kubernetes expertise for post-MVP scaling scenarios 

- Security Certifications: CSP, CISSP, or equivalent security certifications 

- Database: Redis, TimescaleDB, InfluxDB for high-performance data operations 

- Secrets Management: Experience with HashiCorp Vault, AWS Secrets Manager, or similar tools