Top-rated Full-Stack Developer with 12+ years delivering secure, scalable solutions that produce measurable business outcomes for global clients. What clients achieved with my work Reduced login friction and support costs by up to 80% after SSO rollouts (SAML, OAuth2, OIDC), improving user adoption and lowering helpdesk tickets. Cut user onboarding time from days to minutes via centralized identity flows and automated provisioning. Increased team productivity up to 40% with custom Office and Google Workspace add-ins that automate repetitive work and integrate third-party systems. Strengthened security and compliance (SOC2, ISO, GDPR) by implementing hardened IAM, PKI, and cryptographic document signing. Scaled multi-tenant SaaS to thousands of organizations with sub-second auth latency and 99.9% uptime. Accelerated go-to-market and recurring revenue growth by delivering modular auth and API platforms. Selected results & experience 100+ SSO integrations across Okta, Auth0, Azure AD/Entra ID, Google Workspace, AWS Cognito, Ping Identity, ADFS, Salesforce. Architected a multi-tenant Identity Broker (sso.id) enabling customers to connect multiple identity providers in minutes, boosting partner integrations and conversions. Built 15+ Office & Google Workspace add-ins (Word, Excel, Outlook, PowerPoint, Gmail, Sheets, Docs), saving teams hundreds of person-hours per month. Developed 20+ SaaS platforms from MVP to enterprise scale with AI automation and APIs (YouTube, AWS, Firebase, Microsoft Graph), improving engagement and monetization. Implemented PKI, PDF signing, and blockchain anchoring to reduce fraud risk and streamline audits. Technical stack Protocols: SAML, OAuth2, OpenID Connect, SCIM, JWT Platforms: Okta, Auth0, Azure AD/Entra ID, Google Workspace, AWS Cognito, Ping Identity, ADFS, Salesforce Frontend: React, Next.js, Vue, Angular, TypeScript Backend: .NET 8 / C#, Node.js, Python, PHP (Laravel, Django) Databases: MySQL, Oracle, MongoDB Specialized: PKI, cryptography, PDF signing, blockchain-secured documents Why hire me ROI-focused: $1.2M+ earned across 200+ projects with measurable improvements in security, productivity, and time-to-market. Business-first engineering: I reduce operational costs, accelerate onboarding, and unlock new revenue channels. Long-term partner: responsive, reliable, and focused on evolving systems as your business grows. Tell me about your auth, add-in, or SaaS challenge and I’ll outline how we can reduce risk, save time, and increase adoption.

HubSpot Expert & HubSpot RevOps Consultant helping B2B and SaaS teams turn HubSpot CRM into a scalable revenue engine. 🔥 15+ years of experience building and fixing HubSpot systems for B2B & SaaS companies: HubSpot setup, CRM architecture, marketing automation, and revenue operations. I work with founders, marketing leaders, and RevOps teams who want HubSpot to stop being “just a CRM” and start functioning as a revenue engine - connecting HubSpot marketing, HubSpot sales, automation, reporting, and lifecycle strategy into one clear system. As a Top Rated Plus freelancer (top 3% on Upwork), I specialize in designing and optimizing HubSpot CRM setups, marketing automation, and revenue operations that are clean, measurable, and built to scale - not duct-taped workflows that break after 3 months. Focus: B2B SaaS, complex sales cycles, and revenue-driven HubSpot setups. Most of my work starts with fixing what previous HubSpot setups got wrong. I’m usually brought in when HubSpot is already in place, but not delivering results. ✔ 1000+ hours in HubSpot (SaaS, B2B) ✔ Built & optimized full RevOps systems (lead gen → deal → revenue) ✔ Strong focus on practical execution - not theory --- WHAT I ACTUALLY HELP CLIENTS WITH Most clients come to me when: 👉 HubSpot is already implemented, but reporting doesn’t make sense 👉 Marketing and sales are both using HubSpot, but RevOps is missing 👉 Lead scoring, pipelines, or lifecycle stages feel wrong 👉 Automation exists, but doesn’t drive revenue 👉 They’re scaling outbound, inbound, or PLG and need structure That’s where RevOps HubSpot comes in. I don’t just “set things up”. I design how revenue flows through HubSpot CRM - from first touch to closed-won and retention. --- CORE EXPERTISE: ✅ HubSpot CRM architecture – pipelines, lifecycle stages, custom properties, data models ✅ HubSpot setup & optimization – Marketing, Sales, and Service Hubs working together ✅ Revenue operations HubSpot (RevOps HubSpot) – aligning marketing, sales, and data into one system ✅ HubSpot marketing automation – workflows, lead nurturing, scoring, attribution ✅ HubSpot sales automation – deal pipelines, task automation, sales enablement ✅ Email marketing & deliverability inside HubSpot (and outbound tools like Instantly) ✅ Reporting & dashboards – exec-level visibility that actually answers business questions I frequently integrate HubSpot with tools like WordPress, Pipedrive, Apollo, Zapier/Make, outbound platforms, and enrichment tools - always with clean CRM logic first. --- HOW I WORK (and why clients keep me long-term) I’m both strategic and technical. That means: - I can design the RevOps strategy - I can implement it myself inside HubSpot - I explain why things are built a certain way - I optimize based on data, not assumptions My clients value that I think like a revenue operator, not just a HubSpot implementation technician. --- Typical problems I solve: • Leads coming in but not converting • Messy lifecycle stages & unreliable reporting • Sales and marketing are not aligned • Overcomplicated or broken workflows • “We have HubSpot… but it’s not working” --- INDUSTRIES & TEAMS I WORK WITH I primarily work with: - B2B & SaaS companies - Tech startups and scale-ups - FinTech, Insurance, and data-driven platforms - Agencies that need a senior HubSpot Expert to support their clients I often collaborate with SEO, digital marketing, product, UX, and designer teams (product design Figma) to ensure HubSpot supports the full customer journey - not just forms and emails. --- CERTIFICATIONS & trust signals: 🌟 HubSpot CRM, Marketing, Sales & Email Marketing Certified 🌟 Top Rated Plus on Upwork (top 3%) 🌟 15+ years in CRM, digital marketing, and revenue operations If you’re looking for a HubSpot Expert and architect who understands RevOps, CRM structure, and revenue - not just automation, let’s talk. If HubSpot feels complex, messy, or underperforming, that’s exactly where I add the most value. Send me a message and tell me what’s broken - I’ll show you how to fix it.

I bring many years of hands-on EspoCRM development experience, creating highly customized extensions that transform standard CRM installations into intuitive, automated powerhouses tailored to each client's workflow. With 5 years in PHP development, I specialize in building everything from sophisticated automation workflows to UI/UX enhancements that make users feel at home in their systems. My technical stack includes PHP, Laravel, SvelteKit, Vue.js, Barebones.js, SCSS/CSS, MariaDB, and PostgreSQL, plus extensive experience in server configuration and hosting optimization for robust EspoCRM deployments. Beyond CRM work, I develop full-scale web applications and am currently rebuilding my URL shortening service using Laravel and Vue.js. Whether you need a quick extension, ongoing CRM enhancements, or a complete custom implementation, I bring the technical depth and practical experience to deliver maintainable solutions that work exactly how your business needs them to.

I am a Salesforce Certified Professional with a passion for transforming business challenges into streamlined, scalable solutions. With over 10+ years of hands-on experience across multiple Salesforce Clouds, I specialize in helping organizations leverage the full power of Salesforce to drive growth, improve efficiency, and deliver exceptional customer experiences. Throughout my career, I have successfully completed 80+ Salesforce projects, serving industries such as finance, healthcare, e-commerce, real estate, and technology. My approach combines deep technical expertise with a consultative mindset, ensuring solutions are not only well-built but aligned with business goals. Key Areas of Expertise: a) Salesforce Sales Cloud, Service Cloud, Marketing Cloud b) Apex, Visualforce, Lightning Web Components (LWC) c) Flow Builder, Process Automation, Workflow Rules d) Third-party integrations and API development e) Data migration and data quality management f) AppExchange application development and customization g) Reports, Dashboards, and actionable analytics My Certifications:- 1) Salesforce Certified AI Associate 2) Salesforce Certified Strategy Designer 3) Salesforce Certified Business Analyst 4) Salesforce Certified OmniStudio Developer 5) Salesforce Certified OmniStudio Consultant 6) Salesforce Certified Platform Developer II 7) Salesforce Certified B2B Solution Architect 8) Salesforce Certified Education Cloud Consultant 9) Salesforce Certified Marketing Cloud Email Specialist 10) Salesforce Certified User Experience Designer 11) Salesforce Certified Nonprofit Cloud Consultant 12) Salesforce Certified Identity and Access Management Architect 13) Salesforce Certified System Architect 14) Salesforce Certified Integration Architect 15) Salesforce Certified Advanced Administrator 16) Salesforce Certified Development Lifecycle and Deployment Architect 17) Salesforce Certified Experience Cloud Consultant 18) Salesforce Certified Field Service Consultant 19) Salesforce Certified Service Cloud Consultant 20) Salesforce Certified Sales Cloud Consultant 21) Salesforce Certified Sharing and Visibility Architect 22) Salesforce Certified Application Architect 23) Salesforce Certified Platform Developer I 24) Salesforce Certified Data Architect 25) Salesforce Certified Administrator 26) Salesforce Certified Platform App Builder Whether you need to implement a new Salesforce solution, optimize an existing org, or build custom applications, I am here to deliver results that matter. Let’s discuss how I can help you achieve your goals through Salesforce.

I'm a software developer and AI engineer. I have extensive experience with voice agents and sales applications. See my portfolio for examples of my work. I'd love to learn more about your project and share how I'll approach it.

🌟 Expert-Vetted Talent - Recognized in Upwork's top 1% of Talent ✅ Established Track Record of Hours and Earnings 🚀 Fastest Response Times 💯 100% Job Success Awarded by Clients 🔝 Top Rated Plus by Upwork, Freelancer and Agency 🔎 Searching for New Opportunities and Problems to Solve Hello and welcome, thank you for considering me for your project. My Upwork profile’s stats clearly demonstrate both my expertise and the value I add to every team that brings me on. The thousands of hours clocked on this platform alone speak to my years of experience in Software Development, and the total earnings shows a glimpse of how valuable that time has been for clients. I am available and ready to answer specific questions about your project’s current problem, next opportunity, or my fit for it. Shall we get to work? Send a message or an invite now and I will be right with you. 𝐖𝐡𝐲 𝗖𝗹𝗶𝗲𝗻𝘁’𝘀 𝐂𝐡𝐨𝐨𝐬𝐞 𝐌𝐞: 1. 𝗘𝘅𝗽𝗲𝗿𝗶𝗲𝗻𝗰𝗲 𝗮𝗻𝗱 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: Decades of experience bring a deep understanding of various languages, frameworks, platforms and tools, common and uncommon pitfalls, and alternative solutions. 🗯️ “He was very responsive to our messages and explained what was needed in our project clearly. He is definitely an expert in his work.” 2. 𝗘𝗳𝗳𝗲𝗰𝘁𝗶𝘃𝗲 𝗣𝗿𝗼𝗯𝗹𝗲𝗺 𝗦𝗼𝗹𝘃𝗶𝗻𝗴: I have a proven track record and knack for solving complex problems and providing customized solutions for specific business needs and challenges. 💭 “Isaac was able to quickly discern what I needed and delivered…” 3. 𝗦𝘆𝘀𝘁𝗲𝗺 𝗩𝗶𝗲𝘄 𝗮𝗻𝗱 𝗖𝗼𝗺𝗽𝗿𝗲𝗵𝗲𝗻𝘀𝗶𝗼𝗻: Years of experience and diverse projects have helped me accumulate a broad set of skills and tools. I use this experience to the advantage of my client’s projects in not only accomplishing tasks, but in advising and consulting on potential challenges and opportunities. 💬 “LIFE SAVER!!! I have now use(d) Issac for two separate jobs now and will be bringing him on for some regular hours. Hopefully we get some funding and I can do even more with him. GREAT DEVELOPER” 𝐌𝐲 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞: Python|Django|PHP | MySQL | Laravel | WordPress | CodeIgniter | ExpressionEngine | CSS | HTML | JavaScript | Express.js | React.js | Bootstrap | PostgreSQL | NoSQL | Linux | Apache | Nginx | API | Git | SVN | Amazon Web Services | AWS EC2 | 𝐒𝐞𝐫𝐯𝐢𝐜𝐞𝐬 𝗜 𝐎𝐟𝐟𝐞𝐫: 𝐅𝐫𝐨𝐧𝐭 𝐚𝐧𝐝 𝐁𝐚𝐜𝐤-𝐄𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭: Planning, Design, Documentation, Coding, Testing, Debugging, Deployment, Monitoring, and Maintenance. 𝐒𝐲𝐬𝐭𝐞𝐦 𝐀𝐝𝐦𝐢𝐧𝐢𝐬𝐭𝐫𝐚𝐭𝐢𝐨𝐧: Cloud infrastructure Design, Deployment, Optimization, Maintenance, Scaling, Recovery and Backup, Troubleshooting, and Cost Management. 𝐃𝐚𝐭𝐚𝐛𝐚𝐬𝐞 Management: Architecting, Optimization, Monitoring, Recovery, Updating, and Merging. 𝐏𝐫𝐨𝐣𝐞𝐜𝐭 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: Planning, Project Requirements, Task Detailing, Developer Support and Feedback, Problem Resolution, Progress Monitoring, Qualification Testing, and Stakeholder Communication.

Accurate conversion data is critical for scaling profitable ad campaigns, especially when real revenue happens offline. Many businesses optimize ads based only on form submissions while ignoring what happens inside the CRM. If your Google Ads or Meta campaigns rely on lead forms, phone calls, CRM stages, or booked appointments but those final outcomes are not being sent back to the ad platforms, your optimization is incomplete. I help businesses and agencies implement advanced Offline Conversion Tracking (OCT) for Google Ads and Meta so campaigns optimize based on real business results instead of just initial form submissions. As a Top Rated conversion tracking specialist, I work with performance-driven businesses that need reliable and privacy-compliant tracking across their full marketing funnel. What I Specialize In: ✔ Offline Conversion Tracking (OCT) for Google Ads (CRM, call tracking, qualified leads, revenue uploads) ✔ Offline Conversion Tracking for Meta (CAPI and CRM integration) ✔ Google Tag Manager (Client-side and Server-side setup) ✔ GA4 Advanced Event and Funnel Tracking ✔ Google Ads Enhanced Conversions ✔ Facebook Conversion API (CAPI) ✔ Full Tracking Audit and Attribution Gap Resolution Whether you're capturing leads through forms, CallRail, booking systems, or multi-step funnels, I ensure proper UTM, gclid, and fbclid capture so data flows correctly from website to CRM and back into your ad platforms. My Process: • Audit your current tracking and attribution flow • Identify missing or misfiring events • Implement structured gclid, fbclid, and UTM capture • Connect CRM or call tracking data to Google Ads and Meta • Validate and document the complete data flow The goal is simple: Make sure your ad platforms optimize based on real revenue, qualified leads, or confirmed bookings instead of surface-level events. If accurate attribution matters to your business, I am ready to help. Mijanur Rahaman Conversion Tracking Specialist Google Ads and Meta Offline Conversion | GA4 | GTM | Server-side

I have 9+ years of hands-on Salesforce experience, I specialize in transforming complex business challenges into efficient, scalable, and automated solutions. My expertise in data architecture, automation, and integrations empowers organizations to maximize efficiency, streamline operations, and drive growth using Salesforce. 📈 Proven Results Across 150+ Successful Implementations I’ve helped businesses across diverse industries enhance productivity, optimize workflows, and improve customer engagement. Here’s how I deliver impact: ✅ Custom Salesforce Implementations – Designed and deployed tailored solutions, increasing operational efficiency by 40% on average. ✅ Process Automation with Salesforce Flow – Reduced manual tasks by 40%, leading to faster turnaround times and higher productivity. ✅ Salesforce Digital Experience Sites – Developed 30+ branded portals, improving customer engagement and satisfaction by 35%. ✅ Seamless Integrations – Connected 35+ Salesforce orgs with platforms like Twilio, DocuSign, Slack, and more to enhance collaboration. ✅ E-commerce & Payment Solutions – Built secure payment systems for 20+ businesses, ensuring smooth transactions and boosting trust. ✅ Advanced Reporting & Dashboards – Delivered insightful data visualizations that contributed to 25% revenue growth for multiple clients. 🏆 Certified Salesforce Expert I hold multiple Salesforce certifications that showcase my deep technical expertise and commitment to excellence: 🎓 Salesforce Certified JavaScript Developer I 🎓 Salesforce Certified Integration Architecture Designer 🎓 Salesforce Certified Sales Cloud Consultant 🎓 Salesforce Certified Service Cloud Consultant 🎓 Salesforce Certified Nonprofit Cloud Consultant 🎓 Salesforce Certified Field Service Consultant 🎓 Salesforce Certified CPQ Specialist 🎓 Salesforce Certified Platform App Builder 🎓 Salesforce Certified Administrator 🎓 Salesforce Certified Platform Developer I 🎓 Salesforce Certified Community Cloud Consultant 🎓 Salesforce Certified Pardot Specialist 🛠️ Expertise Across Salesforce Clouds I deliver solutions across multiple Salesforce products to meet unique business needs: ✔️ Sales Cloud – CRM optimization for sales teams, pipeline tracking, and revenue forecasting. ✔️ Service Cloud – Case management, automated workflows, and customer support enhancements. ✔️ Experience Cloud – Engaging customer, partner, and employee portals. ✔️ Nonprofit Cloud – Custom donor management, fundraising, and engagement strategies. ✔️ Field Service Cloud – Optimized scheduling, dispatching, and mobile workforce management. ✔️ CPQ (Configure, Price, Quote) – Automated quoting, pricing, and sales process efficiency. 🔹 Why Work With Me? ✔️ Proven Results: Track record of delivering measurable improvements in efficiency, automation, and revenue growth. ✔️ Strategic Thinking: I don’t just build—I optimize, scale, and future-proof your Salesforce instance. ✔️ Custom-Tailored Solutions: Every project is designed to meet your specific business needs and goals. ✔️ Seamless Communication: Expect clear timelines, transparent updates, and proactive problem-solving. 🚀 Let’s Build Something Great Together Whether you need a new Salesforce implementation, advanced automation, seamless integrations, or optimized workflows, I’m here to help. Let’s discuss how we can take your Salesforce investment to the next level. 📩 Contact me today to bring your vision to life!

Google Tag Manager expert | GTM | GA4 | Server-side tagging | Conversion Tracking ✅ **Where can I help?** 🔥 I help ecommerce and lead generation businesses fix broken tracking, recover lost conversions, and build reliable GA4, GTM, and server-side tagging setups. Using Google Tag Manager and Google Analytics, I assist companies in improving conversion tracking, establishing precise statistics, and identifying the precise sources of profit. My clients grow outcomes predictably and increase conversion accuracy to 95%. 🔥 Do you want to be able to know exactly where your money is going, which channels are profitable, and what steps your customers take before making a purchase? I able to bring Modern Google Tag Manager solutions to your business. I'm the ideal fit for you. I have over seven years of expertise as a digital analytics specialist, and over 300 businesses rely on me to create reliable tracking systems using GTM, including complex conversion tracking. enhanced conversion, cookie consent, proper tracking attribution for e-commerce and leadgen niches, and make data-driven marketing decisions. ✅ Here are some of my most recent projects' highlights: Set up advanced e-commerce and server-side tracking for Google Analytics via Google Tag Manager for a Shopify store with more than 3,000 products and 28,000 daily visits. Include cookie consent v2. Assisted a German business in switching from manual data collecting to automated dashboards by configuring Google Analytics 4, data pipelines, and Google Tag Manager for server-side tagging, which resulted in an 80% reduction in reporting time and a +32% increase in event accuracy. Helped international businesses with 500,000 monthly visitors to avoid splitting data by different Google Analytics accounts by setting up unified GA4 for all 6 websites via Google Tag Manager, created smart filters to easily understand data across countries. As an official Stape partner, I helped over 50 companies switch their tracking setup to the most advanced solution, where we were able to reach 85-95% event accuracy for ecommerce and lead-gen businesses using client-side and server-side GTM. Helper to ECO-Shop switch from client side to server-side via Google Tag Manager and configure Google Analytics for better monitoring and conversion attribution, plus added privacy consent v2 to follow EU regulation. Resulting in a +73% increase in ROAS right after setup. ⚡️ **My skills, experience and approach:** My areas of expertise are identifying weaknesses in analytics configurations, repairing lost events, and establishing reliable data connections between systems using GTM. There is a business purpose for each tag, trigger, and event. I consider my clients as partners. I look into their objectives and difficulties, stick to KPIs, and produce clear and measurable results. Transforming complexity into clarity is the sole purpose of reliable data. ⚡️ The services I provide: 📈 Google Tag Manager setup (client‑side and server‑side) 📈 Google Analytics configuration and data migration 📈 Enhanced e‑commerce and conversion tracking 📈 Event tracking for forms, scrolls, videos, and clicks 📈 DataLayer setup and debugging 📈 Cross‑domain and subdomain tracking 📈 Conversion API and first‑party data tracking 📈 Looker Studio dashboards and visualization 📈 Proper cookie / privacy consent v2 - Base and Advanced 🧠 I never stop learning and hold certifications in: 🔶 Trained in Google Tag Manager at CXL 🔶 Google Tag Manager (GTM) local Ukraine online courses 🔶 Google Analytics at CXL 🔶 Data‑Driven Marketing 💬 What clients say about me: "Artur has advanced expertise in Google Tag Manager! Helped to configure Google Tag Manager and Google Analytics, set up with multiple pixels – and all my leads are accurate now.” Karl, owner of 8 websites, runs TikTok and Meta ads “Working with Arthur was an excellent experience. As certified Google Tag Manager, he rebuilt our tracking setup from scratch – including Google Tag Manager, Stape server‑side tracking, Meta CAPI, and Consent Mode integration. Everything is now clean, accurate, and future‑proof. He not only implemented it flawlessly but also explained every step clearly and helped me truly understand how it all works. Highly recommended if you need a reliable expert who actually delivers measurable results.” Shopify business owner, 250k EUR monthly revenue 🌍 99% client satisfaction and more than 460+ successfully finished tasks on Upwork. Because I prioritize quality, openness, and communication, the majority of short-term agreements become long-term collaborations. 🤝 Marketing firms refer to me as their "reliable wall" because I handle challenging analytics and monitoring assignments, deliver on schedule, and make sure every project is completed. ⌚ Ready to fix your tracking and stop wasting data? Click the Invite button, and I will bring your business to a new level of tracking, clean data, and smart business decisions.

Hello there! I'm Mohamed, an enthusiastic Software Developer and Low Code Evangelist with a keen interest in API integration. As an expert in Creatio No Code/Low Code, I'm committed to optimizing business operations through the integration of a single, unified platform. With over five years of experience, I've successfully delivered 25+ Creatio implementations, bringing my expertise to companies across a wide range of industries. If you're looking to implement Creatio or integrate APIs to streamline your business operations, I'm here to help. Whether you're looking to automate workflows or improve customer engagement, I can help you achieve your goals. So, feel free to reach out to me, and let's work together to bring your vision to life!