Hire the Best BigQuery Developers in Massachusetts

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Bob C.

Wayland, Massachusetts

$95/hr
5.0
10 jobs

As a seasoned IT professional with 10 years of working experience, I took a journey along with the industry's progression and always refreshed my skills to keep up with the trend. Starting my career as an application developer, I moved to full stack and back end development then recently moved again to machine learning. What's unchanged in the changing time is the passion for problem solving and continuous learning. Whether the task is translating ambiguous business goals to technical design and execution, or doing data analysis to guide decision making, or creating and executing a roadmap for the team, I had experience and did them well. Whether it's a 0 to 1 project (i.e rapid prototyping MVP) or one to many (high availability service) projects, I have first hand experience. This is not to mention various team roles like scrum master, component lead or retrospective coordinator I did in agile development teams.

  • BigQuery
  • Computer Vision
  • Python
  • Natural Language Processing
  • SQL
  • Apache Kafka
  • Docker
  • Apache Airflow
  • Data Analysis
  • Apache Beam
Zachary C.

Belmont, Massachusetts

$85/hr
5.0
79 jobs

Great dashboards donโ€™t just show numbers; they tell a story your team can act on. I design dashboards in Looker Studio Pro and BI tools that unify marketing, product, and financial data into one clear source of truth. With 15+ years of experience - and an MBA from Columbia Business School - I deliver dashboards that are both technically solid and business-ready. โœ… ๐–๐ก๐š๐ญ ๐ˆ ๐ƒ๐จ โ€ข Looker Studio dashboard design (executive scorecards, marketing ROI, SaaS KPIs) โ€ข GA4 setup, event tracking, and funnel analysis โ€ข Conversion tracking & attribution modeling (ads, spend, ROAS, cohorts) โ€ข SQL + BigQuery data models for custom reporting โ€ข Self-service analytics setup (templates, guides, automation) ๐Ÿ›  ๐“๐จ๐จ๐ฅ๐ฌ & ๐๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ๐ฌ Looker Studio โ€ข GA4 โ€ข Google Tag Manager โ€ข SQL โ€ข BigQuery โ€ข dbt โ€ข Snowflake โ€ข Power BI โ€ข Tableau โ€ข Google Sheets โ€ข Excel โ€ข Zapier โ€ข Facebook Ads โ€ข Google Ads โ€ข TikTok โ€ข YouTube โ€ข Shopify โ€ข Amazon ๐Ÿข ๐ˆ๐ง๐๐ฎ๐ฌ๐ญ๐ซ๐ข๐ž๐ฌ SaaS โ€ข eCommerce โ€ข Marketing Agencies โ€ข Healthcare โ€ข Education โ€ข Nonprofit โ€ข Retail ๐Ÿ’ฌ ๐‚๐ฅ๐ข๐ž๐ง๐ญ ๐…๐ž๐ž๐๐›๐š๐œ๐ค โญโญโญโญโญ โ€œOut of the dozens of people Iโ€™ve hired on Upwork, Zach is hands down the BEST.โ€ โญโญโญโญโญ โ€œHe built the most amazing dashboard - itโ€™s now the heart of our business.โ€ ๐Ÿš€ ๐‚๐จ๐ง๐ญ๐š๐œ๐ญ ๐Œ๐ž Letโ€™s build a dashboard your whole team trusts.

  • BigQuery
  • Google Sheets
  • Looker Studio
  • Data Visualization
  • Business Intelligence
  • Google Analytics
  • Web Analytics
  • Supermetrics
  • Data Analysis
  • Microsoft Power BI
  • Tableau
  • SQL
  • Analytics & Tracking Setup
  • Google Tag Manager
  • Analytics Dashboard
Dennis K.

Boston, Massachusetts

$150/hr
4.7
257 jobs

๐—˜๐˜…๐—ฝ๐—ฒ๐—ฟ๐˜ โฑ ๐˜๐—ถ๐—บ๐—ฒ ๐˜€๐—ฎ๐˜ƒ๐—ถ๐—ป๐—ด๐˜€ โฑ ๐—ณ๐—ผ๐—ฐ๐˜‚๐˜€๐—ฒ๐—ฑ ๐—š๐—ผ๐—ผ๐—ด๐—น๐—ฒ ๐—ฆ๐—ต๐—ฒ๐—ฒ๐˜๐˜€ ๐—ฎ๐˜‚๐˜๐—ผ๐—บ๐—ฎ๐˜๐—ถ๐—ผ๐—ป. ๐Ÿ“ˆ ๐Ÿฎ๐Ÿฑ๐Ÿฌ+ ๐—ต๐—ฎ๐—ฝ๐—ฝ๐˜† ๐—ฐ๐—น๐—ถ๐—ฒ๐—ป๐˜๐˜€ ๐˜€๐—ฒ๐—ฟ๐˜ƒ๐—ฒ๐—ฑ ๐—ฎ๐—ฟ๐—ผ๐˜‚๐—ป๐—ฑ ๐˜๐—ต๐—ฒ ๐˜„๐—ผ๐—ฟ๐—น๐—ฑ. ๐ŸŒŽ ๐—ข๐—ฏ๐˜€๐—ฒ๐˜€๐˜€๐—ฒ๐—ฑ ๐˜„๐—ถ๐˜๐—ต ๐—ด๐—ฒ๐˜๐˜๐—ถ๐—ป๐—ด ๐—ถ๐˜ ๐—ฑ๐—ผ๐—ป๐—ฒ ๐—ฝ๐—ฒ๐—ฟ๐—ณ๐—ฒ๐—ฐ๐˜๐—น๐˜† ๐˜๐—ต๐—ฒ ๐—ณ๐—ถ๐—ฟ๐˜€๐˜ ๐˜๐—ถ๐—บ๐—ฒ, ๐—ผ๐—ป-๐˜๐—ถ๐—บ๐—ฒ, ๐—ฒ๐˜ƒ๐—ฒ๐—ฟ๐˜†-๐˜๐—ถ๐—บ๐—ฒ ๐˜๐—ผ ๐˜€๐—ฎ๐˜ƒ๐—ฒ ๐˜†๐—ผ๐˜‚ ๐—ฎ๐—ป๐—ฑ ๐˜†๐—ผ๐˜‚๐—ฟ ๐˜๐—ฒ๐—ฎ๐—บ ๐—ฎ ๐˜๐—ผ๐—ป-๐—ผ๐—ณ-๐˜๐—ถ๐—บ๐—ฒ! ๐ŸŽฏ ๐Ÿ“ž Just invite me to your job on Upwork, and we can chat about exactly how we can automate your business processes together. ๐Ÿ“ž โ ๐˜ฟ๐™š๐™ฃ๐™ฃ๐™ž๐™จ ๐™ฌ๐™–๐™จ ๐™–๐™ฃ ๐™–๐™—๐™จ๐™ค๐™ก๐™ช๐™ฉ๐™š ๐™ฅ๐™ก๐™š๐™–๐™จ๐™ช๐™ง๐™š ๐™ฉ๐™ค ๐™ฌ๐™ค๐™ง๐™  ๐™ฌ๐™ž๐™ฉ๐™! ๐™’๐™š ๐™๐™–๐™™ ๐™– ๐™˜๐™ค๐™ข๐™ฅ๐™ก๐™ž๐™˜๐™–๐™ฉ๐™š๐™™ ๐™ฃ๐™š๐™š๐™™ ๐™ฉ๐™ค ๐™ฉ๐™ช๐™ง๐™ฃ ๐™– ๐™˜๐™ค๐™ก๐™ก๐™š๐™˜๐™ฉ๐™ž๐™ค๐™ฃ ๐™ค๐™› ๐™จ๐™ฅ๐™ง๐™š๐™–๐™™๐™จ๐™๐™š๐™š๐™ฉ๐™จ ๐™ž๐™ฃ๐™ฉ๐™ค ๐™–๐™ฃ ๐™–๐™ช๐™ฉ๐™ค๐™ข๐™–๐™ฉ๐™š๐™™ ๐™จ๐™ฎ๐™จ๐™ฉ๐™š๐™ข. ๐˜ฟ๐™š๐™ฃ๐™ฃ๐™ž๐™จ ๐™š๐™ญ๐™š๐™˜๐™ช๐™ฉ๐™š๐™™ ๐™ฉ๐™๐™š ๐™ฅ๐™ง๐™ค๐™Ÿ๐™š๐™˜๐™ฉ ๐™›๐™ก๐™–๐™ฌ๐™ก๐™š๐™จ๐™จ๐™ก๐™ฎ! ๐™ƒ๐™š ๐™ฌ๐™–๐™จ ๐™ž๐™ฃ๐™˜๐™ง๐™š๐™™๐™ž๐™—๐™ก๐™ฎ ๐™ง๐™š๐™จ๐™ฅ๐™ค๐™ฃ๐™จ๐™ž๐™ซ๐™š ๐™–๐™ฃ๐™™ ๐™ช๐™ฃ๐™™๐™š๐™ง๐™จ๐™ฉ๐™ค๐™ค๐™™ ๐™ค๐™ช๐™ง ๐™ฃ๐™š๐™š๐™™๐™จ ๐™ง๐™ž๐™œ๐™๐™ฉ ๐™–๐™ฌ๐™–๐™ฎ. ๐™„ ๐™ฌ๐™ž๐™ก๐™ก 100% ๐™—๐™š ๐™ฌ๐™ค๐™ง๐™ ๐™ž๐™ฃ๐™œ ๐™ฌ๐™ž๐™ฉ๐™ ๐™๐™ž๐™ข ๐™–๐™œ๐™–๐™ž๐™ฃ! โž ๐Ÿ—ฃ Michelle Mundy - Executive Director, Production Operations - Left Field Labs ๐Ÿ—ฃ Highlights of what my clients love about working with me and my team: ๐Ÿ”ธ Exceptional experience backed understanding of whatโ€™s possible, whatโ€™s challenging and how to create a tailored solution that fits your unique situation. ๐Ÿ”ธ Top-notch communication skills. 2 hours or less response time. Two weekly updates at minimum that cover progress, budget concerns and other relevant info. Transparency is key! ๐Ÿ”ธ I am solution-focused. We push hard to find a way to make things work; we donโ€™t just write things off as impossible due to a lack of imagination or laziness. ๐Ÿ”ธ 50+ years of experience between myself and my carefully hand-picked and vetted team members (we work with the best who genuinely know what theyโ€™re doing!) ๐Ÿ”ธ Peace of mind. Have a problem? Iโ€™ve got your back and will get it fixed reliably and quickly. I excel at freeing up time in your business so that you and your team can stay in your genius-zones, doing the things that cannot be automated (yet). Here are a few examples of some recent wins Iโ€™ve created for my clients; โฑ Saved Evolved Financeโ€™s team over 50+ hours of manual data entry every day โฑ Saved our client Alec 40+ hours per month avoiding manually updating Google Calendar events based on his master spreadsheet โฑ Saved our client John and his team 30+ hours of manual time needed to create folder structure in Google Drive. Highlights of the type of work I commonly support my clients with include: โ˜‘๏ธ Google Sheet Automations, Google Sheets Scripts / Macros & Google Apps Script โ˜‘๏ธ Google Workspace Automation (Drive, Sheets, Docs, Forms, Calendar, Gmail) โ˜‘๏ธ Reporting Automation & Dashboard Creation โ˜‘๏ธ Manual Data Entry Elimination โ˜‘๏ธ Automated Google Calendar Event Creation โ˜‘๏ธ Automated Emails Based On Google Form Submissions โ˜‘๏ธ Google Drive PDF Backups & Saving Automations โ˜‘๏ธ Social Media Platform Analytics/Reporting In Google Sheets (Facebook, Instagram, LinkedIn) โ˜‘๏ธ Automated Text Messaging Solutions Triggered in Google Workspace (With Twilio) โ˜‘๏ธ Zapier, Make.com & Segment.com Related Work Typical results of working together include: โœ… Increased Revenues & Major Ongoing Time Savings โœ… Less Mistakes, Greater Accuracy (Humans Make Mistakes, Automations Donโ€™t) โœ… Less Headaches, More Peace Of Mind & Operations Running More Smoothly Thanks for taking the time to learn more about me! Let me help you win that time and more back. Letโ€™s chat about your project together. Just invite me to your job on Upwork. Talk soon. Dennis Krinitsyn โ ๐˜ฟ๐™š๐™ฃ๐™ฃ๐™ž๐™จ ๐™™๐™ž๐™™ ๐™– ๐™ฅ๐™๐™š๐™ฃ๐™ค๐™ข๐™š๐™ฃ๐™–๐™ก ๐™Ÿ๐™ค๐™— ๐™ฌ๐™ž๐™ฉ๐™ ๐™ค๐™ช๐™ง ๐™ฅ๐™ง๐™ค๐™Ÿ๐™š๐™˜๐™ฉ. ๐™ƒ๐™š ๐™ฌ๐™–๐™จ ๐™ง๐™š๐™จ๐™ฅ๐™ค๐™ฃ๐™จ๐™ž๐™ซ๐™š, ๐™ช๐™ฃ๐™™๐™š๐™ง๐™จ๐™ฉ๐™–๐™ฃ๐™™๐™ž๐™ฃ๐™œ, ๐™ฉ๐™ž๐™ข๐™š๐™ก๐™ฎ, ๐™ž๐™ฃ๐™˜๐™ค๐™ง๐™ฅ๐™ค๐™ง๐™–๐™ฉ๐™š๐™™ ๐™›๐™š๐™š๐™™๐™—๐™–๐™˜๐™ , ๐™–๐™ฃ๐™™ ๐™ค๐™ซ๐™š๐™ง๐™–๐™ก๐™ก ๐™ฅ๐™ง๐™ค๐™ซ๐™ž๐™™๐™š๐™™ ๐™– ๐™๐™ž๐™œ๐™-๐™ฆ๐™ช๐™–๐™ก๐™ž๐™ฉ๐™ฎ ๐™™๐™š๐™ก๐™ž๐™ซ๐™š๐™ง๐™–๐™—๐™ก๐™š ๐™—๐™š๐™›๐™ค๐™ง๐™š ๐™ค๐™ช๐™ง ๐™–๐™œ๐™ง๐™š๐™š๐™™ ๐™™๐™š๐™–๐™™๐™ก๐™ž๐™ฃ๐™š. ๐™„ ๐™๐™ž๐™œ๐™๐™ก๐™ฎ ๐™ง๐™š๐™˜๐™ค๐™ข๐™ข๐™š๐™ฃ๐™™ ๐˜ฟ๐™š๐™ฃ๐™ฃ๐™ž๐™จ ๐™–๐™ฃ๐™™ ๐™ฉ๐™๐™š ๐™ฉ๐™š๐™–๐™ข ๐™ฉ๐™ค ๐™–๐™ฃ๐™ฎ๐™ค๐™ฃ๐™š ๐™ž๐™ฃ๐™ฉ๐™š๐™ง๐™š๐™จ๐™ฉ๐™š๐™™ - ๐™„ ๐™˜๐™ค๐™ช๐™ก๐™™ ๐™ฃ๐™ค๐™ฉ ๐™—๐™š ๐™ข๐™ค๐™ง๐™š ๐™ž๐™ข๐™ฅ๐™ง๐™š๐™จ๐™จ๐™š๐™™ ๐™ฌ๐™ž๐™ฉ๐™ ๐™ฉ๐™๐™š๐™ž๐™ง ๐™–๐™ฅ๐™ฅ๐™ง๐™ค๐™–๐™˜๐™ ๐™–๐™ฃ๐™™ ๐™ฌ๐™ค๐™ง๐™ . โž ๐Ÿ—ฃ Alec Harrises - Program Administrator - HubSpot ๐Ÿ—ฃ

  • Google Docs
  • Microsoft Excel
  • JavaScript
  • Google Sheets
  • Automation
  • Google Workspace
  • Google Apps Script
  • CSS
  • Spreadsheet Macros
  • Google Calendar
  • Google Slides
Jeffrey N.

Somerville, Massachusetts

$145/hr
5.0
9 jobs

Hey there! Iโ€™m a full-stack engineer and integration specialist with over 13 years of experience in web development, marketing analytics, and custom MarTech implementations. As the lead developer at ONNO, a multi-million dollar eCommerce brand, Iโ€™ve built, scaled, and optimized the entire tech stackโ€”from storefront to server-side tracking and data pipelines. I specialize in connecting the dots between your website, analytics stack, CRM, and ad platformsโ€”making sure your data is clean, actionable, and privacy-compliant. ๐Ÿ”ง My Core Focus Areas: Customer Data Platforms & Server-Side Tracking: - Segment CDP Setup, API Integrations, and Event Mapping - Facebook CAPI (Client & Server-Side via GTM or Segment) - Google Tag Manager (Client + Server Containers) - Stape.io + GCP + AWS setups - Google Consent Mode v2 & Cookie Compliance - GA4 Event Architecture & Attribution Modeling - Data Layer Engineering for WooCommerce, Shopify, Custom Sites WooCommerce & WordPress Development: - Deep experience building and customizing high-volume WooCommerce stores - Performance optimization, plugin customization, and full theme development - REST API integrations with CRMs, analytics tools, and inventory systems - Seamless user tracking + eCommerce funnel instrumentation MarTech Integrations: - HubSpot (Marketing & Sales Hub, Workflows, Custom Events via Segment) - Google Ads Enhanced Conversions - TikTok, Pinterest, LinkedIn, and Microsoft Ads event tracking - Email Platform Integrations (Klaviyo, Mailchimp, etc.) Data Infrastructure & Reporting: - Google BigQuery event streaming - Custom dashboards via Looker Studio / Google Data Studio - Blended data reporting using SuperMetrics or native APIs - Clean-room style reporting (server-side โ†’ client-side reconciliation) ๐Ÿ’ก Why Work With Me? Integration-First Mindset: Iโ€™m not just a developerโ€”I connect platforms so your marketing, sales, and product teams actually get the data they need. End-to-End Ownership: From architecture to implementation and QA, I lead projects with reliability and long-term thinking. WooCommerce Specialist with an Engineer's Discipline: My ecommerce builds donโ€™t just look goodโ€”they scale and track like they should. Data-Driven Approach: Clean, deduplicated, and enriched data isnโ€™t just a goalโ€”itโ€™s my standard. Letโ€™s talk if you're looking for a reliable technical partner to help you build smarter analytics, cleaner pipelines, and a unified marketing stack.

  • Python
  • C#
  • JavaScript
  • AWS Amplify
  • React
  • AWS Lambda
  • DNS
  • Bootstrap
  • WordPress
  • WooCommerce
  • Google Tag Manager
  • HTML
  • Database
Mark J.

Boston, Massachusetts

$55/hr
5.0
3 jobs

๐—ง๐—ฟ๐—ฎ๐—ป๐˜€๐—ณ๐—ผ๐—ฟ๐—บ๐—ถ๐—ป๐—ด ๐—•๐˜‚๐˜€๐—ถ๐—ป๐—ฒ๐˜€๐˜€ ๐—ข๐—ฏ๐—ท๐—ฒ๐—ฐ๐˜๐—ถ๐˜ƒ๐—ฒ๐˜€ ๐—ถ๐—ป๐˜๐—ผ ๐—ฆ๐—ฐ๐—ฎ๐—น๐—ฎ๐—ฏ๐—น๐—ฒ, ๐—ฃ๐—ฟ๐—ผ๐—ณ๐—ถ๐˜๐—ฎ๐—ฏ๐—น๐—ฒ, ๐—ฅ๐—ฒ๐—น๐—ถ๐—ฎ๐—ฏ๐—น๐—ฒ ๐—ฆ๐—ผ๐—ณ๐˜๐˜„๐—ฎ๐—ฟ๐—ฒ ๐—ฆ๐—ผ๐—น๐˜‚๐˜๐—ถ๐—ผ๐—ป๐˜€ ๐—ฎ๐—ป๐—ฑ ๐—œ๐—ป๐˜๐—ฒ๐—น๐—น๐—ถ๐—ด๐—ฒ๐—ป๐˜ ๐—ฆ๐˜†๐˜€๐˜๐—ฒ๐—บ๐˜€ For fast-scaling startups to ๐…๐จ๐ซ๐ญ๐ฎ๐ง๐ž ๐Ÿ“๐ŸŽ๐ŸŽ ๐ž๐ง๐ญ๐ž๐ซ๐ฉ๐ซ๐ข๐ฌ๐ž๐ฌs, Iโ€™ve created and refined digital architectures that drive results, not just code. My role as an ๐„๐ง๐ญ๐ž๐ซ๐ฉ๐ซ๐ข๐ฌ๐ž ๐’๐จ๐ฅ๐ฎ๐ญ๐ข๐จ๐ง๐ฌ ๐€๐ซ๐œ๐ก๐ข๐ญ๐ž๐œ๐ญ and ๐ˆ๐“ ๐ญ๐ž๐š๐ฆ ๐ฅ๐ž๐š๐๐ž๐ซ goes beyond delivering technical specifications. I build systems that grow businesses, streamline operations, and unlock untapped value. Over the past two and one half decades, Iโ€™ve led ๐Ÿ“๐ŸŽ+ ๐ž๐ง๐ญ๐ž๐ซ๐ฉ๐ซ๐ข๐ฌ๐ž-๐ฅ๐ž๐ฏ๐ž๐ฅ ๐ฉ๐ซ๐จ๐๐ฎ๐œ๐ญ builds, platforms that power millions of users, automate critical workflows, and enhance operational efficiency. My approach is business-first, with technology as the execution engine. Every line of code, every infrastructure decision, and every integration is grounded in a single purpose: driving measurable and positive business outcomes. What I Bring to the Table ๐Ÿ. ๐’๐ญ๐ซ๐š๐ญ๐ž๐ ๐ข๐œ ๐’๐ฒ๐ฌ๐ญ๐ž๐ฆ๐ฌ ๐€๐ซ๐œ๐ก๐ข๐ญ๐ž๐œ๐ญ๐ฎ๐ซ๐ž Expertise in distributed systems, microservices, and multi-tenant SaaS platforms. Architected cloud-native and hybrid solutions using AWS, GCP, Azure, Citrix and VMware, with a strong emphasis on scalability, performance, and maintainability. ๐Ÿ. ๐‚๐ซ๐จ๐ฌ๐ฌ-๐๐ฅ๐š๐ญ๐Ÿ๐จ๐ซ๐ฆ ๐„๐ง๐ ๐ข๐ง๐ž๐ž๐ซ๐ข๐ง๐  ๐‹๐ž๐š๐๐ž๐ซ๐ฌ๐ก๐ข๐ฉ Oversaw full product lifecycles from ideation to launch, leading cross-functional teams across frontend (React.js, Vue, Angular), backend (Node.js, Python/Django, PHP/Laravel, Go), mobile (React Native, Kotlin, Swift), and DevOps (Docker, Kubernetes, CI/CD). ๐Ÿ‘. ๐€๐๐ˆ-๐…๐ข๐ซ๐ฌ๐ญ ๐๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ ๐‹๐จ๐ ๐ข๐œ & ๐ˆ๐ง๐ญ๐ž๐ ๐ซ๐š๐ญ๐ข๐จ๐ง๐ฌ Designed and integrated with complex ecosystems, ERP, CRM, payment gateways, 3PL, IoT platforms, MS SQL replication, benefit administration via REST API, XML or CSV data exchange, and AI/ML pipelines, to unify operations and data streams. ๐Ÿ’. ๐ƒ๐š๐ญ๐š-๐ƒ๐ซ๐ข๐ฏ๐ž๐ง ๐ƒ๐ž๐œ๐ข๐ฌ๐ข๐จ๐ง ๐€๐ซ๐œ๐ก๐ข๐ญ๐ž๐œ๐ญ๐ฎ๐ซ๐ž Built analytics systems and event-driven architectures using Kafka, Redis, PostgreSQL, MongoDB, Google Analytics, and BigQuery to enable real-time insights and predictive automation. ๐Ÿ“. ๐„๐ง๐ญ๐ž๐ซ๐ฉ๐ซ๐ข๐ฌ๐ž ๐’๐ž๐œ๐ฎ๐ซ๐ข๐ญ๐ฒ & ๐‚๐จ๐ฆ๐ฉ๐ฅ๐ข๐š๐ง๐œ๐ž Implemented secure-by-design principles, GDPR, HIPAA / HITECH compliance, OAuth2/JWT protocols, and enterprise-grade identity management with SSO, RBAC, and Zero Trust Architecture. ๐๐ฎ๐ฌ๐ข๐ง๐ž๐ฌ๐ฌ ๐ˆ๐ฆ๐ฉ๐š๐œ๐ญ ๐‡๐ข๐ ๐ก๐ฅ๐ข๐ ๐ก๐ญ๐ฌ โœ… Developed multiple secure portals integrated with third party benefit administration systems via REST API, CSV or MS SQL replication; โœ… Designed the core architecture for a FinTech platform that scaled from 0 to 2 M+ users, supporting high-concurrency transactions with bank-grade security. โœ… Led the digital transformation of a legacy healthcare provider system into a HIPAA-compliant, AI-powered SaaS platform. โœ… Architected a logistics platform used by global freight companies to track, optimize, and automate supply chain operations in real time. โœ… Enabled a retail marketplace to reduce infrastructure costs by 35% and increase page load speeds by 60% through cloud refactoring and caching strategies. ๐Ÿ“ˆ ๐‹๐ž๐ญโ€™๐ฌ ๐๐ฎ๐ข๐ฅ๐ ๐ฐ๐ข๐ญ๐ก ๐๐ฎ๐ซ๐ฉ๐จ๐ฌ๐ž I partner with founders, CTOs, and business leaders to co-create systems that solve real business problems. Whether you're launching a new platform, modernizing legacy architecture, or scaling infrastructure to meet demand, I bring the strategic foresight and technical precision gained from over two-decades of custom software and IT leadership in service to your needs.. Iโ€™m confident that one call will be sufficient to validate my experience and capabilities. Letโ€™s architect the future of your business. Full-Stack Web Developer, Mobile App Developer, React.js Developer, React Native Developer, iOS & Android App Development, Cross-Platform App Development, API Development & Integration, Custom Web Application Development, SaaS Application Development, E-commerce App Development, UI/UX Implementation, White-label App Development, Marketplace Development, API-driven Mobile Apps, Mobile App Redesign, End-to-End App Development, Native iOS (Swift/SwiftUI), Native Android (Kotlin), UI Implementation for Mobile, Healthcare & Fitness Apps, Backend Development, Python Django, MVP Development & Prototyping.

  • Full-Stack Development
  • Web Application Development
  • Web Application
  • Mobile App Development
  • Android App Development
  • iOS Development
  • SaaS Development
  • Web Development
  • React Native
  • App Development
  • OpenAI API
  • Swift
  • Kotlin
  • JavaScript
  • API Integration
Zak E.

Beverly, Massachusetts

$100/hr
4.9
53 jobs

Build production-ready AI agents, RAGs with LangChain + GPT for SaaS companies. Cut dev time 50% and scale to tens of thousands of users. Recent client feedback: โ€œZak was awesome! He delivered exactly what I asked faster than I expected! He is extremely knowledgeableโ€ I donโ€™t just write code, I solve business problems. Whether you need an AI agent handling customer inquiries 24/7, a custom workflow that eliminates manual tasks, or a scalable web application, I deliver solutions that save time and generate ROI. What I specialize in: ๐Ÿค– AI Agents & Automation by โ€ข Custom ChatGPT/Claude integrations โ€ข Workflow automation (Zapier / n8n alternatives) โ€ข Data processing pipelines โ€ข Lead generation bots โšก Modern Full-Stack Development Turning AI-generated prototypes into real applications - Yes, Vibe coding got you 80% there in 2 hours, but now you need the other 20% that actually matters: security, authentication, error handling, database design, and deployment that doesnโ€™t crash at 3am โ€ข Next.js 14+ with App Router โ€ข React/TypeScript applications โ€ข Node.js/Python APIs โ€ข Real-time applications (WebRTC, WebSockets) โ˜๏ธ Cloud & Infrastructure โ€ข AWS serverless architecture โ€ข Database optimization (PostgreSQL, DynamoDB) โ€ข API design and integration โ€ข Performance optimization My approach: Fixed-price or hourly projects with clear deliverables. You get working software, not just hours logged. I handle the technical complexity so you can focus on growing your business. Ready to automate your next bottleneck or build something that scales? Letโ€™s talk.

  • Web Application
  • API Development
  • AI Bot
  • Retrieval Augmented Generation
  • Artificial Intelligence
  • LangChain
  • AI Agent Development
  • AI App Development
  • SaaS
  • Next.js
  • Pinecone
  • OpenAI API
  • Python
  • CRM Software
  • Dashboard

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