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Software Engineer Senior

Location:
Helsinki, Uusimaa, Finland
Salary:
80000
Posted:
July 07, 2025

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Resume:

Benjamin Frandsen

Senior Software Engineer

********************@*****.*** Aarhus, Denmark

linkedin.com/in/benjamin-frandsen-b11726360

PROFILE

Senior Software Engineer with 8+ years of experience, specializing in the design and architecture of scalable blockchain protocols across DeFi, cross-chain interoperability, and decentralized infrastructure. Adept at solving complex technical challenges in multi-chain ecosystems, with a proven track record of contributing to advanced platforms like zkLink Nova, decentralized exchanges, and synthetic asset systems. Strong background in system architecture, protocol design, cloud infrastructure, and DevOps automation.

Skilled in Solidity, Rust, and Move, with hands-on experience across EVM and non-EVM chains, and a deep commitment to performance, security, and composability in decentralized systems. SKILLS

Language

Solidity, Rust, Go, Move, Java,

C++, Python, Javascript,

Typescript

Others

Sequencer, RPC, CI/CD, AWS,

Azure, EC2, GCP, Terraform,

Docker, Kubernetes, Kafka, Geth

Blockchain Technology

Bitcoin, Ethereum, Solana,

Aptos, Layer2 solutios,

Consensus, P2P messaging,

Zero Knowledge, Cryptography,

Hyperledger, Cosmos SDK

Tools

Tenderly, Remix IDE, The graph,

IPFS, Alchemy

Frameworks & Libraries

Hardhat, Foundry, Web3.js,

Ether.js, OpenZeppelin,

Substrate, React.js, Next.js,

Express.js, Nest.js

PROFESSIONAL EXPERIENCE

zkLink

Senior Software Engineer

•Led the architecture and launch of zkLink Nova’s Layer 3 rollup, enabling seamless multi-chain asset routing and trustless settlement across ecosystems— contributing to a cumulative TVL surpassing $300M+ through user-focused UX improvements and protocol incentives.

05/2023 – present

Singapore, Singapore

•Developed generalized messaging and execution layers for cross-chain contract calls and multi-chain state synchronization, leveraging zkBridge- compatible proof systems to unify DeFi liquidity and asset management across Ethereum, Optimism, zkSync, and Avalanche.

•Integrated additional DeFi protocols including Stargate and Venus into zkLink’s ecosystem, enabling seamless lending, staking, and liquidity provisioning—bridging capital efficiency between zk-rollups and Layer 1 platforms.

•Authored and deployed secure smart contracts in Move and Solidity, focusing on modular asset bridging, permissioned vaults, and gas-abstracted staking modules within zkLink’s Layer 2 and Layer 3 environments. Connext network

Software Engineer

•Spearheaded the development of decentralized exchange (DEX) platforms, adapting and extending Balancer and Curve-style AMMs to introduce customizable liquidity curves, multi-hop swap routing, and governance- controlled fee parameters.

02/2021 – 04/2023

San Francisco, US

•Architected lending and stablecoin minting systems inspired by MakerDAO and Morpho, implementing CDP-based collateralization, oracle-driven pricing, and modular interest rate logic using on-chain governance hooks.

•Collaborated on SDK and wallet integration for B2B clients, focusing on multi- chain wallet abstraction, transaction batching, and gas optimization strategies across EVM-compatible networks (Ethereum, Polygon, Arbitrum).

•Engineered scalable, event-driven infrastructure using AWS Fargate, API Gateway, DynamoDB, and EventBridge to manage contract interactions, track on-chain analytics, and support low-latency, autoscaled dApp endpoints.

•Contributed to cross-chain bridge development, building relayer logic and messaging frameworks for LayerZero ensuring asset integrity across chains like Ethereum, BNB Chain, and Avalanche.

PixelPlex

Full Stack Blockchain Developer

•Designed and developed core smart contracts for an NFT marketplace using Solidity, implementing secure and gas-efficient logic for minting, listing, purchasing, and bidding workflows.

04/2019 – 02/2021

New York, US

•Integrated IPFS for decentralized asset and metadata storage, ensuring immutability and censorship resistance of NFT media files and attributes.

•Connected smart contracts to the frontend using Ethers.js, implementing advanced on-chain interactions such as token approval flows, gas estimation, and event-driven UI updates with blockchain event listeners.

•Orchestrated backend service communication through a Kafka-based microservices architecture, facilitating real-time data syncing between smart contract events and off-chain services for a more robust and scalable system. DICEUS

Full Stack Developer

•Collaborated closely with UX/UI designers to translate wireframes and designs into fully functional, responsive web applications. 06/2017 – 04/2019

Copenhagen,

Denmark

•Participated in responsive web interfaces using React.js and Redux, ensuring compatibility across devices and optimizing for performance and user experience.

•Improved frontend performance by utilizing lazy loading, code splitting and tree shaking to reduce the bundle size and load times.

•Debug and troubleshoot issues related to UI components, API integration, and state management.

EDUCATION

Aarhus University

Bachelor's Degree & Computer Science

08/2012 – 06/2017

Aarhus, Denmark



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