NAVINA LANG | CORE SOLIDITY ENGINEER

Secure, Optimized, and Multi-Chain DeFi Protocol Engineering

Delivering battle-tested smart contract architecture, tokenization solutions, and gas-optimized protocols across leading EVM chains. Expert in architectural decision-making, upgradeability patterns, and cross-chain integrations.

$7.29M+ TVL Managed
4 EVM Chains Deployed
90%+ Test Coverage
10+ DeFi Integrations
Secure Your Protocol: Book a Consultation

High-Impact Consulting Services

Smart Contract Architecture & Development

Designing secure, scalable, and upgradeable systems. Expertise in production-grade deployments across 4 EVM chains.

  • Architectural Decision-Making: Strategic choices on contract upgradeability vs. immutability, balancing security and flexibility.
  • Implementation of UUPS Proxy patterns for critical upgradeability decisions.
  • Gas reduction using EIP-1167 Minimal Proxy (Clone) patterns, reducing deployment costs by ~90%.
  • Production-grade deployments across Ethereum, BNB Chain, Base, and Arbitrum.

Tokenization & Index Token Design

Architecting tokenization mechanisms that represent proportional shares as tradeable assets, enabling composable DeFi protocols.

  • Core Tokenization Architecture: Designing mechanisms to represent users' proportional shares as tradeable index tokens.
  • Dynamic pricing modules calculating proportional share values in real-time.
  • Integration with DEX protocols for seamless token trading and liquidity.
  • Performance fee calculation and distribution mechanisms.

Security & Auditing Management

Establishing security best practices to protect your protocol and treasury assets.

  • Implementing Reentrancy Guards, Access Control, and Emergency Pause Mechanisms.
  • Managing external audit cycles and successful remediation of all critical and high-severity findings.
  • Safe multi-signature vault integration for protocol treasury security.
  • Comprehensive test suites achieving 90%+ code coverage.

DeFi Protocol Integration & Optimization

Integrating third-party protocols (DEXs, lending/staking) to facilitate core operations and yield optimization.

  • Systematic gas optimization achieving an estimated 20-30% reduction in high-frequency transaction costs.
  • Integration of Chainlink Oracles for slippage control, asset pricing, and performance fee calculations.
  • Multi-ecosystem bridging infrastructure (EVM-to-EVM and EVM-to-Solana) using protocols like deBridge.
  • Integration and management of 10+ third-party DeFi protocols for deposit, withdrawal, rebalancing, and yield optimization.

Technical Leadership & Process

Building engineering culture, establishing development processes, and mentoring teams for long-term success.

  • First technical hire experience: influencing product architecture and technology stack decisions.
  • Scrum Master facilitation: sprint planning and Agile best practices implementation.
  • Mentoring junior developers and building collaborative engineering culture.
  • Establishing internal security review processes and quality assurance standards.

Core Technical Expertise

Solidity / EVM
Hardhat / Foundry
UUPS Proxies / EIP-1167
Gas Optimization (20-30% reduction)
Tokenization Architecture
Smart Contract Auditing
Chainlink Oracles
Cross-chain Bridges (deBridge)
DEX Integration
Lending Protocols
Yield Optimization
TypeScript / JavaScript
Testing (Unit/Integration/Fuzzing)
Multi-sig (Safe)
Git / GitHub
Agile / Scrum

Chains: Ethereum, BNB Chain, Base, Arbitrum

Proven Track Record

Delivered battle-tested, multi-audited smart contracts managing significant value across multiple chains:

$7.29M+ TVL Managed 4 EVM Chains Deployed 90%+ Test Coverage 20-30% Gas Reduction 10+ DeFi Integrations Multi-Audited Protocols

Successfully architected and deployed production-grade protocols with zero critical vulnerabilities in production.

About NL Digital Consulting LLC

NL Digital Consulting LLC is a US-based entity founded by Navina Lang, a results-driven Solidity Engineer with 3+ years of experience building secure multi-chain DeFi protocols.

The firm specializes in providing comprehensive consulting for early-stage and growing DeFi projects, ensuring protocols are secure, efficient, and architecturally sound from concept to multi-chain deployment. We focus on smart contract architecture, cross-chain integrations, and gas optimization to deliver battle-tested solutions.

Core Experience: As the first technical hire at Velvet.Capital, Navina architected and deployed production-grade smart contracts managing $7.29M+ TVL across Ethereum, BNB Chain, Base, and Arbitrum. This hands-on experience in building and scaling DeFi protocols from the ground up provides unique insights for consulting clients.

Background: Prior to focusing on DeFi, Navina gained technical experience in software development and Open-Source Compliance strategy at MSG Systems, Germany, developing automated compliance solutions and scientific evaluation methodologies.

Education: B.Sc. Information Systems, Technical University of Munich (TUM), 2016-2020

Languages: German (Native), English (Proficient)

Get In Touch

Let's discuss how to build your next secure DeFi protocol. Contact me directly via email.

Email: navina@nldigitalconsulting.com

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