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Mischelle Massey

@mischellemassey

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Certified Blockchain Developer and Data Analyst skilled in smart contracts, distributed systems, and BI.

United States

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What I'm looking for

I seek roles combining blockchain development and data/BI work at collaborative, growth-oriented teams where I can build secure smart contracts, optimize data pipelines, and drive measurable business impact.

I am a certified Blockchain Developer and Data Analyst with four years of hands-on experience building, testing, and deploying blockchain applications and smart contracts across Ethereum, EOSIO and Hyperledger platforms.

I combine blockchain engineering (Solidity, C++, consensus algorithms) with data engineering and BI expertise — developing Snowflake data warehouses, optimizing ETL pipelines, and producing Power BI and Tableau dashboards that drove measurable improvements in processing time and data-driven decisions.

I prioritize reliable, secure systems and cross-functional collaboration, with a track record of reducing processing/query times, improving team productivity, and delivering prototypes, feasibility studies, and production-ready smart contract implementations.

Experience

Work history, roles, and key accomplishments

Current

Freelance Data Analyst

Current

Freelance

Oct 2023 - Present (1 year 11 months)

Developed and implemented optimized data pipelines into Snowflake reducing data processing time by 30% and maintained Tableau dashboards that increased data-driven decision-making by 25%.

Snowflake ETL SQL Tableau Data Modeling Data Quality Python Performance Optimization

Blockchain / Smart Contract Developer

Preferred Medical Marketing Corporation

Mar 2022 - Oct 2023 (1 year 7 months)

Researched and developed blockchain deliverables, designed and implemented smart contracts and prototypes, and conducted Hyperledger Caliper performance tests to validate network performance.

Solidity Smart Contracts Consensus Algorithms Testing Python Git Hyperledger Caliper

Business Intelligence / Data Analyst

Preferred Medical Marketing Corporation

Mar 2022 - Oct 2023 (1 year 7 months)

Designed a Snowflake data warehouse and BI dashboards in Power BI/Tableau, reducing query response time by 40% and improving team productivity by 20% through technical guidance and data quality procedures.

Snowflake Power BI Tableau SQL Data Modeling Revenue Cycle Management Data Quality Reporting

Blockchain / Smart Contract Developer

Divistock LLC

Aug 2019 - Mar 2022 (2 years 7 months)

Designed and developed smart contracts in Solidity and C++, created a token (DIVI) for a tokenization platform, and optimized contract code to increase efficiency by 15%.

Solidity C++Truffle Python Smart Contracts Tokenization AWS React

Product Manager / Mobile App Dev Lead

Sync Tree

Dec 2017 - Jul 2019 (1 year 7 months)

Led mobile app development and product integration efforts, delivered SYS Smart Home applications for Android/iOS, and implemented data analysis systems that reduced errors by 15% and improved accuracy by 20%.