Hire the Best Excel Experts in Connecticut

I’m a senior Excel VBA developer with 29 years of corporate-level experience automating spreadsheet processes, enhancing productivity, and modernizing legacy applications. My clients have included MassMutual, The Hartford, Pratt & Whitney, Connecticut Children’s Medical Center, CVS/Health, and more than 85 Upwork clients. For Cornerstone Real Estate Advisers (a MassMutual subsidiary), I developed a suite of proprietary budgeting tools that saved the firm over $1 million in commercial software licensing fees. The suite of asset-type-customized workbooks ran successfully for two decades and was widely preferred to commercial software alternatives across a user base of 100+ property management companies in the U.S. and Canada. Excel VBA is my specialty. I build and code robust automation solutions, eliminate time-consuming manual tasks, and stabilize unstable or error-laden workbooks. I also integrate Excel with Word, Outlook, and other MS Office applications for data-driven document generation and communication workflows. With advanced writing skills and an editor’s keen eye, I deliver top-shelf documentation. I write clean VBA code that is easy to follow, maintain, and troubleshoot, using a style refined over nearly three decades—far more readable, efficient, and maintainable than typical auto-generated macro code. I'm experienced collaborating with professionals in finance, accounting, engineering, and actuarial science—delivering tools that streamline operations, enhance decision-making, and stand the test of time. I favor a structured, incremental development process—guided by clear communication and steady progress toward the right solution. My goal isn’t just to deliver working code—it’s to create lasting value, delivered clearly, with precision and purpose.

I'm an experienced private equity professional (10+ years) and have made dozens of models and pitch decks for multimillion dollar (and several >$1 Billion) companies/investments. I've been an Analyst, Senior Analyst, and Associate on deal teams (3-5 person teams) that have successfully closed over $5.0B of direct investments across 5 continents and over $1.5B of capital commitments for funds and co-investment vehicles in North America, Europe and India. I was the Lead Analyst on the $2 Billion acquisition of Santander’s renewable power portfolio, resulting in the creation of Cubico Sustainable Investments – now a $7 Billion global renewable energy company. I was also the Lead Analyst on PSP's €3.5B acquisition of French Telecom Company, TdF. My work consisted of rigorous financial modeling, strategic analysis, and effective collaboration with cross-functional teams, investment partners, and due diligence advisors. Most recently, as CFO of Supreme Robot, I successfully pivoted the company towards digital media and Artificial Intelligence, securing a $250,000 National Science Foundation grant for an AI accessibility tool and launching multiple high-growth ventures. This entrepreneurial experience has honed my ability to identify value-enhancing opportunities and execute complex strategies under dynamic conditions. With my proficiency in financial modeling, valuation techniques, due diligence, and market analysis, I believe my expertise aligns closely with the technical and strategic requirements outlined in the role; and if given the opportunity, I’ll prove to be one of your highest returning investments.

Hi, I’m Julia Maryyanek! 👋 25-year-old Process Simulation Engineer & Data Analyst on a mission to make complex energy systems easier to understand and far more efficient. I combine chemical engineering, thermodynamics, and modern data tools (Python, Excel/VBA, APROS, Power BI) to build models, dashboards, and automations that save time, cut costs, and help teams make smarter decisions. If you have messy technical data, long simulation workflows, or engineering models that need better insights… I can fix that ⚡ ⸻ 💼 What I Do • 🔧 Process simulation & modeling (chemical + energy systems) • 📊 Data analysis & visualization (Excel, Python, Power BI, Tableau) • 🤖 Automation scripts & ETL workflows (VBA / Python) • 🌡️ Thermodynamics consulting (molten salt & supercritical CO₂) • 📈 Custom Excel tools (dashboards, VBA, CoolProp integration) • 🌐 Lightweight web apps for engineers (Flask / Django) ⸻ 💡 Why Clients Like Working With Me • Deep engineering + thermodynamics expertise • Strong coding + automation skillset • Speak both technical and business language • Fast delivery, clean structure, and solid documentation • Collaborative, friendly, and easy to work with 😊 ⸻ ✅ Recent Wins • ⚙️ Cut simulation time by 40% on a molten salt energy model (renewables project) • 📊 Built Python dashboard for sCO₂ compression data → 25% efficiency boost • 📥 Automated reporting system in Excel/VBA → saved 15+ hours/week • 🔬 Led thermodynamics analysis for chemical plant upgrade → 18% energy savings • 🌐 Developed a Flask app so non-technical users can run process simulations with one click ⸻ 🧰 Tools & Tech Stack Python (pandas, numpy, scipy, sklearn) Excel (advanced formulas, VBA, CoolProp) APROS / Aspen / HYSYS Power BI / Tableau / Plotly SQL, MATLAB Flask / Django ETL • Forecasting • Optimization • ML Basics ⸻ 💬 Ready to make your simulations faster, your data meaningful, and your workflow smoother? Send me a message — I’d love to hear about your project and help you knock it out of the park 🚀

Passionate about solving client's needs using my years of experience in tech and finance. Expert in all things Excel and data as well as providing CFO level analysis and guidance. Services I provide: - Excel modeling and expertise - Data analysis leveraging tools beyond Excel: SQL, Python, etc - Fractional CFO services to analyze financial statements and provide strategic guidance