Hire the Best Bridge Specialists

Building a successful SaaS product or mobile app requires more than just writing code—it requires a technical partner who understands the entire ecosystem from server to screen. As a Top Rated Software Engineer, I specialize in bridging the gap between visually polished mobile frontends and secure, complex backends, delivering production-ready applications used across multiple countries. Whether you are a startup founder needing to turn an idea into a clear, working MVP without overengineering, or an established business looking to scale a robust system, I provide end-to-end technical ownership. My Core Expertise: Mobile Engineering (Flutter & Native): I build technically sound mobile apps using Clean Architecture & BLoC/Provider. With deep knowledge of native integrations (Platform Channels, iOS Swift, Android Kotlin/Java), my focus on production standards helps clients achieve a 98% crash-free rate. Backend & System Design: I architect secure, scalable RESTful APIs and microservices using Spring Boot (Core/Security/Data JPA), ASP.NET Core, and Serverless Cloud Functions. Because I also build mobile apps, I know exactly how to architect backend systems that are practical, efficient, and easy to consume. SaaS MVP & Tech Leadership: I help early-stage startups focus on rapid MVP iteration and validation. I take ownership of the technical direction—including integrating modern features like Generative AI (Spring AI)—helping you decide what to build now, what can wait, and how to structure for future growth. Proven Publishing Record: I have successfully developed, deployed, and currently maintain live applications across the Apple App Store, Google Play Store, and Huawei AppGallery. What you can expect when working with me: A System-Level Mindset: Smooth API integration with a deep awareness of backend constraints, mobile performance, and data integrity. Single Point of Contact: I handle both product development and backend infrastructure, so you don’t need to manage mismatched systems or multiple freelancers. Honest Technical Advice: I prioritize clear communication, realistic timelines, and collaborative problem-solving—including telling you what not to build to save your budget. ⚙️ The Tech Stack: Languages: Dart, Java, JavaScript (Node.js), C#, Kotlin, Swift. Backend: Spring Boot, ASP.NET Core & Entity Framework, RESTful APIs, Microservices, Spring AI. Cloud & DevOps: Firebase, Supabase, Docker Containerization, CI/CD (GitHub Actions), Serverless Architecture, AWS, GCP. Tools: Git, Maven/Gradle, Postman, AI-assisted Development. If you want a developer who simply follows instructions, I may not be the best fit. But if you are looking for a technical partner who thinks with you, understands the full stack from server to screen, and helps you make the right decisions—let's get in touch.

𝗬𝗼𝘂𝗿 𝘁𝗲𝗮𝗺 𝗶𝘀 𝗯𝘂𝗿𝗻𝗶𝗻𝗴 50𝗞–𝟱𝟬𝟬𝗞/𝘆𝗲𝗮𝗿 𝗼𝗻 𝘄𝗼𝗿𝗸 𝗔𝗜 𝗰𝗮𝗻 𝗱𝗼 𝗯𝗲𝘁𝘁𝗲𝗿. 𝗜 𝗯𝘂𝗶𝗹𝗱 𝘁𝗵𝗲 𝘀𝘆𝘀𝘁𝗲𝗺𝘀 𝘁𝗵𝗮𝘁 𝗿𝗲𝗰𝗹𝗮𝗶𝗺 𝗶𝘁. 25+ production AI systems shipped across healthcare, life sciences, distribution, hospitality, construction, fintech, and enterprise SaaS. Not prototypes. Real systems running 24/7 with measurable ROI. 𝐑𝐞𝐜𝐞𝐧𝐭 𝐏𝐫𝐨𝐣𝐞𝐜𝐭𝐬: 🧬 𝐀𝐠𝐞𝐧𝐭𝐢𝐜 𝐀𝐈 𝐟𝐨𝐫 𝐋𝐢𝐟𝐞 𝐒𝐜𝐢𝐞𝐧𝐜𝐞𝐬 𝐑𝐞𝐠𝐮𝐥𝐚𝐭𝐨𝐫𝐲 𝐃𝐨𝐜𝐮𝐦𝐞𝐧𝐭𝐚𝐭𝐢𝐨𝐧 Multi-agent platform automating IND/CTA submissions, clinical study reports, and safety narratives for biotech & pharma. Includes AI-powered document extraction, intelligent template generation, automated data propagation across regulatory modules, and human-in-the-loop validation. SOC 2 & GDPR compliant. Trusted by top-20 pharma companies. [Google ADK, LiteLLM, Agentic AI, AWS] 💰 𝐀𝐈 𝐅𝐢𝐧𝐚𝐧𝐜𝐢𝐚𝐥 𝐃𝐨𝐜𝐮𝐦𝐞𝐧𝐭 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞 𝐟𝐨𝐫 𝐍𝐘 𝐈𝐧𝐯𝐞𝐬𝐭𝐦𝐞𝐧𝐭 𝐅𝐢𝐫𝐦 Built a Claude-powered pipeline that classifies 200+ page financial documents, extracts structured values into a governed database, and produces defensible outputs with an evaluation dataset ensuring accuracy across edge cases. [Claude, Document AI, Structured Extraction, Evals] 💍 𝐀𝐈 𝐊𝐧𝐨𝐰𝐥𝐞𝐝𝐠𝐞 𝐀𝐠𝐞𝐧𝐭 + 𝐑𝐞𝐯𝐞𝐫𝐬𝐞 𝐈𝐦𝐚𝐠𝐞 𝐒𝐞𝐚𝐫𝐜𝐡 𝐟𝐨𝐫 𝐉𝐞𝐰𝐞𝐥𝐫𝐲 𝐌𝐚𝐧𝐮𝐟𝐚𝐜𝐭𝐮𝐫𝐞𝐫 RAG-powered MS Teams assistant that captures institutional knowledge from emails, Zoho tickets, and legacy ERP (NAV 2009). Plus a custom computer vision search engine for jewelry B2B commerce with 0% dead-end searches. [Azure OpenAI, RAG, FastAPI, Computer Vision] 📦 𝐀𝐈 𝐎𝐫𝐝𝐞𝐫 𝐏𝐚𝐫𝐬𝐢𝐧𝐠 + 𝐂𝐨𝐧𝐯𝐞𝐫𝐬𝐚𝐭𝐢𝐨𝐧𝐚𝐥 𝐏𝐨𝐫𝐭𝐚𝐥 𝐟𝐨𝐫 𝐃𝐢𝐬𝐭𝐫𝐢𝐛𝐮𝐭𝐨𝐫 Automated PO parsing across 25,000+ SKUs. 30 min → under 1 min, 97% accuracy, 70% faster fulfillment. Plus a conversational AI portal (MCP-powered) for natural-language access to orders, invoices, inventory & support cases. [Vertex AI, Fine-tuned Gemini, Claude, MCP, NetSuite] 🍽 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈 + 𝐖𝐡𝐚𝐭𝐬𝐀𝐩𝐩 𝐀𝐮𝐭𝐨𝐦𝐚𝐭𝐢𝐨𝐧 𝐟𝐨𝐫 𝐑𝐞𝐬𝐭𝐚𝐮𝐫𝐚𝐧𝐭 𝐆𝐫𝐨𝐮𝐩 Voice + WhatsApp agent handling 95%+ of reservations and event inquiries across multi-venue hospitality group. £30K annual savings, zero dropped leads, GDPR-compliant. [Voice AI, WATI, Toast API, WooCommerce] 🏗 𝐀𝐈 𝐋𝐞𝐚𝐝 𝐃𝐢𝐬𝐜𝐨𝐯𝐞𝐫𝐲 𝐀𝐠𝐞𝐧𝐭 𝐟𝐨𝐫 𝐂𝐨𝐧𝐬𝐭𝐫𝐮𝐜𝐭𝐢𝐨𝐧 LLM-powered agent scans local news and institutional sites for capital campaigns, grants & property purchases. 90%+ lead relevance, real-time MS Teams delivery, duplicate prevention, and update intelligence. [Python, LLM APIs, MS Teams API] 🩺 𝐀𝐈 𝐃𝐢𝐚𝐠𝐧𝐨𝐬𝐭𝐢𝐜 & 𝐕𝐨𝐢𝐜𝐞 𝐀𝐬𝐬𝐢𝐬𝐭𝐚𝐧𝐭 𝐟𝐨𝐫 𝐇𝐞𝐚𝐥𝐭𝐡𝐜𝐚𝐫𝐞 𝐋𝐚𝐛 Voice + chat + OCR healthcare assistant handling test discovery, symptom analysis, appointment booking, prescription parsing & report interpretation for one of Pakistan's largest diagnostic labs. [Pinecone, Gemini, Logfire] 💊 𝐀𝐈 𝐇𝟏𝐁 𝐕𝐢𝐬𝐚 𝐏𝐫𝐨𝐜𝐞𝐬𝐬𝐢𝐧𝐠 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦 Multi-tenant SaaS automating case management, OCR document extraction (>95% accuracy), LLM-powered petition drafting, and billing compliance for immigration law. [Django, AWS Textract, OpenAI, QuickBooks API] 𝐖𝐡𝐚𝐭 𝐈 𝐛𝐮𝐢𝐥𝐝 𝐰𝐢𝐭𝐡: ◆ 𝐀𝐈 & 𝐀𝐠𝐞𝐧𝐭𝐬: LangChain, LangGraph, LlamaIndex, Pydantic AI, Google ADK, OpenAI API, Claude, AWS Bedrock, MCP Servers, Multi-Agent Orchestration ◆ 𝐕𝐨𝐢𝐜𝐞 𝐀𝐈: Retell AI, OpenAI Realtime API, ElevenLabs, Whisper, Custom Voice Agents ◆ 𝐑𝐀𝐆 & 𝐃𝐨𝐜𝐮𝐦𝐞𝐧𝐭 𝐈𝐧𝐭𝐞𝐥𝐥𝐢𝐠𝐞𝐧𝐜𝐞: Pinecone, Weaviate, ChromaDB, Qdrant, PDF/OCR Parsing, ERP Integration (NetSuite, Oracle), OCR, Document extraction, PDF extraction. ◆ 𝐎𝐛𝐬𝐞𝐫𝐯𝐚𝐛𝐢𝐥𝐢𝐭𝐲: LangSmith, Logfire, Phoenix Arize, LLM Evaluation ◆ 𝐒𝐭𝐚𝐜𝐤: Python, FastAPI, React, Next.js, PostgreSQL, Docker, AWS/Azure/GCP ◆ 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧𝐬: HubSpot, Salesforce, NetSuite, Zapier, Make, Slack, Stripe ✅ 𝗚𝗼𝗼𝗱 𝗳𝗶𝘁 𝗶𝗳: - You have 5+ employees and a decision-maker in the room - Budget is $5K+ with a target of $10K+ in measurable savings within 90 days - Ready to start within 2 weeks ❌ 𝗡𝗼𝘁 𝗮 𝗳𝗶𝘁 𝗶𝗳: - Price is your #1 decision factor - You expect results in under 2 weeks - You don't value mutual respect & collaboration 𝗪𝗵𝘆 𝗰𝗹𝗶𝗲𝗻𝘁𝘀 𝗿𝗲-𝗵𝗶𝗿𝗲 𝗺𝗲: → 𝐙𝐞𝐫𝐨 𝐬𝐮𝐫𝐩𝐫𝐢𝐬𝐞𝐬. Every milestone, deliverable, and cost locked in from day one. No scope creep. → 𝟗𝟑% 𝐨𝐧-𝐭𝐢𝐦𝐞, 𝐨𝐧-𝐛𝐮𝐝𝐠𝐞𝐭. I scope with precision and deliver exactly what I promise. → <𝟑𝟎 𝐦𝐢𝐧 𝐫𝐞𝐬𝐩𝐨𝐧𝐬𝐞 𝐭𝐢𝐦𝐞. Every time. → 𝐄𝐧𝐝-𝐭𝐨-𝐞𝐧𝐝 𝐨𝐰𝐧𝐞𝐫𝐬𝐡𝐢𝐩. Concept to production. 12 years.

🚀 500k+ Verified B2B Contacts Delivered 🏅< 1% Bounce Rate Guarantee 🏆 Top 1% Talent ✅ 6+ Years of Data Expertise 🏅450+ Projects Successfully Completed ⏱️ 8500+ Hours of Specialized Research on Upwork Does your sales team hate dirty data? They should. Every bounced email is a wasted opportunity. You don't need just a "list builder" you need a strategic data partner who understands that accuracy equals revenue. Hi, I am Muhammad Zain. I specialize in High-Precision B2B List Building and Deep Prospect Research. While most freelancers rely on automated scrapers that deliver 40% bad data, I use a "Human + Tech" Verification Method. I hand-curate prospect lists that hit the inbox, not the spam folder. My clients from startups to enterprise teams stick with me because I eliminate the guesswork. Here is exactly how I ensure your success: 💎 The "Triple-Check" Guarantee: I verify every single email through MillionVerifier + NeverBounce + Manual Ping Testing. If it bounces, you don't pay for it. 🎯 Sniper Targeting: I find the right Decision Makers (CEOs, VPs, Founders) based on Revenue, Headcount, Tech Stack, and Niche. 🔍 Beyond the Surface: I dig deeper than standard tools. I use Apollo.io, Clay, and LinkedIn Sales Navigator to find direct dials and verified emails that others miss. My Tech Stack & Expertise: ➢ Prospecting: Apollo.io, ZoomInfo, LinkedIn Sales Navigator, Crunchbase. ➢ Verification: MillionVerifier, ZeroBounce, NeverBounce, MailTester. ➢ CRM Hygiene: Data Enrichment & Cleaning for HubSpot, Salesforce, and Zoho. Let’s prove the quality before you hire. Don’t risk your budget on unverified data. Invite me to your job, and I will generate a FREE SAMPLE (5-10 Leads) based on your exact criteria. If you like the results, we start. If not, no hard feelings. Ready to fill your pipeline with 100% verified prospects? Click the green "Invite" button, and let’s get to work. Muhammad Z.

I have 5 years working experience in construction industry with various types of Projects as Structural Engineer, BIM Modeler, and Quantity Surveyor/ Estimator. With those experiences, I have much knowledge and better understanding for managing project, and clso critical in analyzing project problem and finding better solutions. So, I can make sure to give you a high quality and quick services for your project. Types of Service that I provide: 1. STRUCTURAL ANALYSIS AND DESIGN A. Type of Structure: - Reinforced Concrete for Building, Bridge - Steel Structure for Warehouse, Building, Bridge, Canopy/ Sun Shade, tower, Deck, etc. - Foundation Structure: Shallow/ Matt Footing, Drilled/Driven Pile, Retaining Wall - Bearing Pressure Analysis for Mobile Crane - Scaffolding Analysis and Design - Steel Connection Analysis on Idea Statica B. Design Code: - US Code - Australian Code - Euro Code C. Software: - Structure Analysis: SAP2000, ETABS, StaadPro, Midas Gen/ Civil, RSAP - Foundation Analysis: Plaxis, Allpile, Prokon - Hand/ Manual Calculation: Excel, MathCAD 2. BIM MODELING A. Revit: - Architecture and Structure 3D model building from Small to high rise building, Warehouse, etc. (LOD 100-LOD 500) - 2D Drawings: Development Design, Construction Document Set, and Shop Drawings - Rebar Detailing: 3D Model, rebar shop drawings, and Bar Bending Schedule - Revit Family Creation: Parametric model for your product (furniture, equipment, construction component, etc.) B. Tekla: - Steel Structure 3D Model of Building, Stair, Industry equipment/ component (Include Connection Detailing) - GA Drawings, Detail Drawings, Assembly Drawings, Single Part Drawings, and Material List C. AutoCAD: - 2D Drawings: Sub Division Plan, Layout Plan, Shop Drawings, etc. - 3D Model on AutoCAD 3. QUANTITY SURVEYING/ ESTIMATING A. Software: - Bluebeam Revu for mark up the drawings - Excel for manual calculation and takeoffs summary B. Types of Projects: - Civil: asphalt, concrete, sidewalk, curb, gutter, retaining wall, fence, etc. - Landscape/ Park: ground cover, turf, pavers, tree, shrubs, benches, exterior light, sign, etc. - Utilities: Storm Drain Line, Water Line, Sanitary Sewer Line, Manhole, catch basin, water meter, hydrant, etc. - Painting: interior wall, ceiling, bulkhead, skirting, door, window frame, exterior wall, epoxy, line marking, etc. - Drywall/ Plastering: drywall/ plasterboard, stud, track, door jamb, window reveal, etc. - Tiling: floor/ wall tile, skirting, screeding, waterproofing, mitre cut, angle, pod & pavers, etc. - Electrical: MEP equipment (receptacle, exhaust Fan, dimmer, etc.), lighting, sign, etc. - Structural: Concrete (foundation, slab, column, beam) and steel, cold formed steel, timber framing, etc.

Most Google Ads & Meta Ads accounts I audit are quietly wasting 30–40% of spend - usually in ways the last "specialist" never noticed. Latest Client Wins ✅ Scaled an ecommerce brand from 7 to 8 figures in revenue using full-funnel campaign strategy across Google Ads, Meta ads, email marketing and conversion rate optimisation. ✅ Drove 137% year-over-year revenue growth at 11x ROAS for a large electronics brand through Search, Shopping, and Performance Max campaign management. ✅ Helped multiple local service businesses increase their bookings until they were forced to open a second location through business restructuring campaigns, refining keyword research, and improving conversion tracking. ⚡ What I Bring to Your Campaigns Whether you're an ecommerce brand looking to scale Shopping, Search, and Performance Max campaigns — or a service business that needs more calls, bookings, and qualified leads — here's what working with me looks like: — Full campaign management and ongoing optimization — Search, Shopping, Performance Max, and Display campaign setup and scaling — Keyword research, negative keyword strategy, and bid management — Conversion tracking, attribution review, and performance audits — A/B testing of ad copy, landing pages, and audience targeting — Google Merchant Center and product feed optimization — Clear reporting tied to revenue, ROAS, and cost per conversion — not clicks 🔒 How Do I Get Better Results Than Anybody? I only take on businesses I know I can grow — I cap my client roster at 15 accounts max so every campaign gets my full attention. You won't get passed off to juniors or stuck with recycled ad templates. You work with me — directly. I'm Sam Billings, founder of Peak-PPC. For over 11 years, I've personally managed Google Ads campaigns and digital strategy for ecommerce brands, B2B service firms, healthcare practices, high-growth startups, and local businesses. 💬 Client Feedback ★★★★★ “The growth has been incredible” "We went from one good lead a month to one every single day. Sam actually delivers what others promise." – Daren Ross | B2B Services ★★★★★ “Highly recommend — just not to competitors” "Sam got our store live on Google Ads fast. We saw profit in month one." – Ekrin Athletics | eCommerce ★★★★★ “A+++” "Lower lead costs, better clients, consistent results. Sam is amazing to work with." – Dr. Pierre Khazin | Healthcare ---- 📈 Ready to Grow? Most business owners waste time and money bouncing between agencies, freelancers, and in-house teams — hoping something sticks. I take the time to understand your business, speak in revenue not vanity metrics, and treat your campaign performance like my own. 📩 Send me a message — and let's find the best next move for your business. Sam Billings Founder, Peak-PPC #googleads #ppc #googleanalytics #googletagmanager #googlemerchantcenter #googleadsmanager #googlepartner #metaads #facebookads #lead generation #ecommerce #performance max #shopping

I am a Senior Full-Stack & AI Systems Engineer with 7+ years of experience building scalable SaaS platforms, modern web applications, and AI-powered systems used by real users. I help startups and businesses design, build, and deploy production-ready applications that combine strong backend architecture with modern AI capabilities such as LLM integrations, Retrieval-Augmented Generation (RAG), intelligent automation, AI copilots, and semantic document search. My focus is not just implementing features but building reliable systems that scale, perform well under real-world usage, and remain maintainable long term. Core Expertise: AI-powered applications using Large Language Models (LLMs) Retrieval-Augmented Generation (RAG) systems and knowledge platforms AI copilots, assistants, and workflow automation tools Semantic search and vector database retrieval systems AI document processing, summarization, and analysis tools Browser automation and bot-detection-hardened scraping systems Full-Stack & Backend Development: Scalable SaaS architecture and system design High-performance REST APIs and backend services (Python/FastAPI, Node.js, NestJS, Express) Async database architecture with PostgreSQL and SQLAlchemy ORM-driven data layers using Prisma and TypeORM (NestJS/Express) and SQLAlchemy async (FastAPI) Background job processing and task queues (ARQ, Celery, BullMQ) Modern frontend applications using React, Next.js, and Typescript Complex business logic and data-driven platforms (payments, auctions, reservations, candidate screening) System refactoring, performance optimization, and scalability improvements Technology Stack: Backend: Python, FastAPI, Node.js, NestJS, Express, Typescript Database: PostgreSQL, SQLAlchemy (async), vector databases, MongoDB Frontend: React, Next.js, Redux Toolkit, Tailwind, and ShadCN AI: OpenAI, Claude, Gemini, Llama models, LangChain, LangGraph, LlamaIndex, RAG pipelines, prompt engineering, vector databases, semantic search Automation: Playwright, browser automation, CDP-based bot detection hardening Infrastructure: AWS, Docker, CI/CD, scalable cloud deployments What Makes Me Different: Most AI projects require multiple specialists, a backend developer, a frontend developer, and an AI engineer. I combine all three areas in one role: Full-stack product development Cloud infrastructure & DevOps AI systems and LLM integration This allows me to design and deliver complete AI-powered products from architecture and backend systems to frontend interfaces and production deployment. If you are building a SaaS product, adding AI capabilities to an existing platform, or developing a new AI-powered application, I can help you design and implement a reliable system that scales with your business.