Hire the Best Google Apps Developers in California

Need a custom app or automation to streamline your workflow and save hours every week? I'm Matt — a Senior Solutions Architect with 10+ years of experience building internal tools, automations, and dashboards for teams at Netflix, Amazon, Google, and AmEx. I specialize in turning messy workflows into clean, scalable systems using tools like Google Sheets, Apps Script, BigQuery, and custom web apps. My work has replaced entire manual teams, accelerated deal cycles, and helped clients scale operations without hiring. What I Build: Internal apps (e.g. CalCheck, Photography Tracker, Legal Portals) Google Sheets & Excel automations (Apps Script, API integrations) Dashboards & data tools (Looker, Power BI, Airtable, Tableau) Why Clients Hire Me: ✔️ Clear communicator with enterprise experience ✔️ Agile mindset, fast turnaround ✔️ Trusted by Fortune 500s & startups alike Let’s connect — I’m available for one-off builds, long-term projects, and productized consulting.

👨‍💻 Well hello there! Thanks for checking out my profile. A little about me: I have nearly 20 years experience as a software developer working for large fortune 500 companies. Now I spend most of my time doing freelance work building Google Apps Scripts projects for clients. I have an eye for design and love building sleek and attractive apps. In my heart I'm half engineer, half artist and love combining the two disciplines to bring an idea to life. Reasons to team up with me: 🎨 Aesthetic designs 🔧 Reliable and long lasting engineering solutions 📱 Automation and workflow improvements ⚙️ User friendly configurations 🔮 Fortune telling for your business! (Okay, okay...I jest, I jest) I specialize in Google Workspace products: ✔️ Google Sheets ✔️ Gmail ✔️ Google Forms ✔️ Google Calendar ✔️ Google Docs ✔️ Google Slides ✔️ Web apps ✔️ etc. I can integrate all of these and other GSuite/GWorkplace products for you as well as creating interfaces to other products outside of Google via APIs. Some commonly requested API connections to various platforms: ✔️ Quickbooks ✔️ Wise ✔️ Stripe ✔️ Zapier ✔️ Webhooks ✔️ OAuth 2 and other authentication schemes I have been able to bring my career as a Full Stack Developer to bear on the Google Workspace/Apps Script environment and deliver solutions to clients that are efficient, tested, and functional. There are many developers that can code a solution that works, but it's also important to find someone that does proper design work and chooses the best out of many possible solutions so the deliverable runs efficiently and has longevity. I can't tell you how many times I've had clients come to me to fix a poorly designed app that needs an overhaul. Given my software and math background I can build just about anything for you if it's possible, and I'm also good at suggesting new workflows, simplifications, and other solutions to streamline your work, and automate as much as possible so you can be creative with your business, and not busy with it. I'd love to hear your needs and challenges and see how I can help you. Give me a shout! Steve A few reviews 📝 ⭐⭐⭐⭐⭐: "Stephen is an absolute ROCK STAR! He is literally the BEST freelancer I have ever used on UpWork over well more than 10 years across multiple companies. We wanted to automate the creation of a daily KPI report we use to monitor our business. We have a team member that was spending 5 hours per day completing it. He was using data pulled from 4 or 5 different software applications. Our team member now spends about 1 hour per day and the other 4 hours per day is automated so he is freed up to work on other things now. We love it and our team member REALLY loves it! Stephen set the appropriate expectations about the project up front. He overcame multiple challenges. He created detailed video instructions for our team on how to use the final KPI and complete the information. He delivered so MUCH more than he promised. This is just the first project of many we will do with him. I didn't know he was the right choice when I hired him because he seemed similar to several others. WOW, he was worlds better than I could have imagined!" "All I can say is WOW! Stephens skills are absolutely incredible the attention to details and execution of this task was 2nd to none. One of the best freelancers we have ever used and will definitely be working with him again! Thanks again Stephen!" "Stephen was simply outstanding to work with and I will 100% be hiring Stephen again for future projects. In this particular project, Stephen was helping my team rebuild a pacing doc used every day by 150 sales professional who generate $200m annually. On top of his expertise, patience and determination to deliver, his biggest strength is his reliability. Stephen will get the job done. This project spanned six weeks and right over the holiday season and Stephen never failed to deliver and in all cases over delivered." "Working with Stephen was a absolute pleasure. He met and surpassed my expectations and added so much valuable input on how to structure things in the best and clearest way. I appreciated the continuous communication throughout and Stephen worked hard to get this involved project completed earlier then expected. Very skilled and a terrific person to work with!! I look forward to working with Stephen in the near future on the next phase of our project. Thank you!!"

Best AI integration expert on Upwork. Read my reviews. Save yourself a great deal of time and money - almost half of my jobs have been to fix the work of other freelancers. I provide unparalleled A+ quality work that is optimized to scale with any amount of data. All of my code is neatly formatted and provides detailed in-code documentation which will allow you, your team, and future contractors to easily understand how it works. I have received a superb rating from every single client of mine and plan to keep it that way. I will make sure your vision is masterfully executed. I have created hundreds of integrations which utilize the APIs of OpenAI (ChatGPT), Anthropic (Claude), Gemini, and more. If you have any questions feel free to shoot me a message; always happy to chat.

● Engineered software applications using Google services such as Google Apps, Ads Script, Sites, Forms, Slides, Looker Studio, and Chrome Extensions. ● Implemented ETL Data pipelines in Python using REST API services and Google Cloud Platform (GCP) tools. ● Constructed custom Google Apps Scripts to automate workflow across different domains like Media, Transportation, Education, Finance, Health, and SEO platforms. ● Compiled web scraping scripts using Python and Selenium with various client requirements. ● Spearheaded project management, delivery timelines, and corporate client interactions independently

I design and build production-grade internal systems with a Google Workspace–first architecture, using Google Apps Script, APIs, and modern web technologies to deliver reliable, maintainable solutions for operations-driven teams. My work goes far beyond basic automation. I architect event-driven workflows, CRM-to-CRM integrations, and internal tools with strong data normalization, deduplication, error handling, retry logic, and audit logging—so systems remain accurate, observable, and dependable over time. Google Workspace is typically the system of record: Sheets for structured data, Drive for document control, Gmail for transactional communication, and Apps Script for orchestration and business logic. This approach often eliminates unnecessary SaaS costs while giving teams greater visibility and control than no-code platforms. When requirements exceed Apps Script’s execution limits or UI capabilities, I extend the system intentionally using React frontends and Node.js services, connected via secure APIs and webhooks. This allows for richer user interfaces, background processing, and scalable workflows—without abandoning the Google-first foundation. Recent projects include: Workers' Compensation case-management platform with React dashboards, role-based auth, API integrations, and automated reporting AI-powered baby safety mobile app with Claude integration, BLE health monitoring, and App Store deployment Warehouse web applications for label printing, invoice creation, and order processing, integrated with internal data and external APIs Customer.i0 → GoHighLevel CRM pipelines using Google Sheets as a normalization and rules engine Multi-location inventory and appointment systems integrated with Square I work best with clients who need someone to own the system end-to-end, from architecture and data modeling to implementation and long-term stability. If you need a developer who makes sound architectural decisions and builds systems that grow with your operations, let’s talk.

Unlock Efficiency and Growth with Tailored Automation Solutions! Imagine having more time to focus on what drives your business forward—whether that’s building client relationships, sparking innovation, or simply enjoying a better work-life balance. I’m here to make that a reality for you. As a Top-Rated Plus freelancer on Upwork with a 100% Job Success Score, I bring over 16 years of Industrial Engineering experience to craft custom automation solutions, templates, and web apps that save you time, cut costs, and empower your success. What You Gain by Working with Me: ⏱ More Time for What Matters - Effortless Automation: Say goodbye to hours lost on repetitive tasks in Google Sheets, Excel, or disjointed systems—I’ll streamline them into seamless workflows. - Faster Results: Enjoy quick turnarounds with processes tailored to your needs, so you can move forward without delay. - User-Friendly Tools: Get intuitive web apps that simplify complex workflows, accessible anytime, anywhere. 💰 Cost Savings That Add Up - Streamlined Operations: Reduce expenses by optimizing your workflows, letting you keep more of your hard-earned revenue. - Error-Free Confidence: Automation eliminates manual mistakes, protecting you from costly setbacks and giving you peace of mind. 🎯 Focus on Your Vision - Strategic Freedom: Invest your energy in growing your business, nurturing clients, or exploring new opportunities. - Boosted Productivity: Let technology handle the heavy lifting, so you can prioritize the core activities that fuel your success. How I Can Help You Succeed: 🚀 Automation That Works for You - Expertise in Google Apps Script and Excel VBA to turn time-consuming tasks into efficient, hands-off processes. - Seamless integrations with Zapier, Make.com, and custom APIs to connect your tools into a unified system. 🛠 Custom Tools Designed for Your Needs - Practical templates for invoicing, reporting, budgeting, and more—built to fit your unique workflow. - Easy-to-use solutions that integrate smoothly, keeping your operations running without a hitch. 🌐 Web Apps Tailored to Your Goals - Bespoke applications that tackle your specific challenges, from data management to process automation. - Cloud-based access, so you and your team can work flexibly from any device. 📊 Insights at Your Fingertips - Interactive dashboards that turn your data into real-time, actionable insights. - Automated reports that keep you informed without the manual grind. Picture the Difference: - Before: Drained by data entry, scattered systems, and endless calculations. - After: Freed up with automated workflows, instant insights, and the clarity to focus on growing your business. What Clients Say: "Nathaniel is a dream to work with—courteous, professional, and lightning-fast with clear solutions. He transformed our project and even sparked ideas for future work. We’ll absolutely hire him again!" — Brian C., General Manager B Why You’ll Love Working with Me: - Proven Reliability: My Top-Rated Plus status and 100% Job Success Score mean you can trust me to deliver exceptional results, every time. - Your Goals, My Priority: I listen closely to understand your vision, delivering solutions that align perfectly with what you need. - Growth Made Simple: From saving time to scaling effortlessly, I’m here to help you stay ahead of the curve with innovative, practical tools. - Support You Can Count On: I’m with you every step of the way, offering ongoing assistance as your business evolves. Let’s Transform Your Business Together!! Ready to reclaim your time, reduce stress, and unlock your business’s full potential? Invite me to your project, and let’s explore how I can tailor automation to your unique needs. With my experience and passion for helping clients succeed, I’m excited to partner with you and deliver results that make a real difference. Warm regards, Nathan C. Google Sheets & Excel Automation Expert | Integration Specialist | Custom Web App Developer