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Sascha H.
$125/hr
100% Job Success
$100K+ earned
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Sascha H. has worked .
You're spending real money on ads. But GA4 says one number, Google Ads says another, Meta says a third, and your CRM doesn't match any of them. So your team picks whichever numbers and attributions that support the decision they already wanted to make — and calls it "data-driven." That's not a reporting problem. That's a measurement problem. I find what's actually causing the discrepancy and fix it. 100% success rate - Top 1% on Upwork. Rated by over 100 happy clients ⭐️⭐️⭐️⭐️⭐️ --- 𝗜𝗳 𝗮𝗻𝘆 𝗼𝗳 𝘁𝗵𝗶𝘀 𝘀𝗼𝘂𝗻𝗱𝘀 𝗳𝗮𝗺𝗶𝗹𝗶𝗮𝗿, 𝘄𝗲 𝘀𝗵𝗼𝘂𝗹𝗱 𝘁𝗮𝗹𝗸: - Google Ads, Meta, GA4, and your CRM all show different conversion numbers — and you're spending five or six figures a month not knowing which one to believe - You server-side tracking or Meta CAPI were 'set-up' , but the numbers still look wrong - You don't leverage server-side tracking at all - Your dashboards look polished, but you can't actually tell which channel is driving revenue - A migration, redesign, or consent banner rollout quietly broke your tracking - You're scaling paid media but don't trust the data enough to make confident budget calls --- 𝗡𝗼𝘁 𝘁𝗵𝗲 𝗿𝗶𝗴𝗵𝘁 𝗳𝗶𝘁? I work best with businesses that are past the basics — running real ad spend, dealing with real complexity, and needing someone who can diagnose and fix what's actually broken, not just install pixels. If you need the cheapest implementation or a quick tag drop, I'm probably not your guy. If that sounds like your situation, let's talk. --- 𝗛𝗲𝗿𝗲'𝘀 𝘁𝗵𝗲 𝗽𝗮𝘁𝘁𝗲𝗿𝗻 𝗯𝗲𝗵𝗶𝗻𝗱 𝗮𝗹𝗹 𝗼𝗳 𝘁𝗵𝗲𝘀𝗲: Every engagement starts with what I call The Tracking Diagnostic — a structured review of your full measurement chain: tags, triggers, consent, data layer, platform configs, server-side events. I map how everything connects (and where it doesn't). You get a clear breakdown of what's broken, what it's costing you, and a prioritized fix plan — before any implementation begins. --- 𝗪𝗵𝗮𝘁 𝘁𝗵𝗶𝘀 𝗹𝗼𝗼𝗸𝘀 𝗹𝗶𝗸𝗲 𝗶𝗻 𝗽𝗿𝗮𝗰𝘁𝗶𝗰𝗲: 🔹 SaaS company losing 40% of conversions due to SPA navigation breaking GA4 events → Full tracking restored in 5 days, CAC dropped 30% 🔹 Ecommerce brand seeing 2.3× more conversions in Meta than GA4 → Server-side deduplication brought platforms within 8% of each other 🔹 Lead gen agency couldn't connect form fills to closed deals across 23 client accounts → Built CRM-to-ad-platform pipeline, attributed $2.1M in previously invisible revenue --- 𝗪𝗵𝗮𝘁 𝗜 𝗰𝗮𝗻 𝗵𝗲𝗹𝗽 𝘄𝗶𝘁𝗵: 𝘍𝘪𝘹 & 𝘋𝘪𝘢𝘨𝘯𝘰𝘴𝘦 - Tag audits, broken conversion tracking, data discrepancies between platforms, consent mode issues, GA4 misconfigurations 𝘐𝘮𝘱𝘭𝘦𝘮𝘦𝘯𝘵 & 𝘉𝘶𝘪𝘭𝘥 - GTM setup and governance, GA4 implementation, server-side tracking (Meta CAPI, TikTok Events API, Google Ads), cross-domain and funnel tracking, data layer architecture 𝘙𝘦𝘱𝘰𝘳𝘵 & 𝘚𝘤𝘢𝘭𝘦 - Looker Studio dashboards, BigQuery exports, offline conversion tracking, CRM-based attribution, ongoing measurement QA --- 𝗥𝗲𝗮𝗱𝘆 𝘁𝗼 𝗳𝗶𝘅 𝘆𝗼𝘂𝗿 𝘁𝗿𝗮𝗰𝗸𝗶𝗻𝗴? If your numbers don't line up and you're not sure where the problem starts — send me a message with 1. your website or funnel URL 2. the platforms involved 3. what looks wrong in the data 4. what outcome you need to measure I'll tell you what I think is going on before we discuss any engagement. Every engagement starts with The Tracking Diagnostic — a structured review of your full measurement setup, where it breaks down, what it's costing you, and exactly what to fix first. You'll have clarity before any implementation begins. Drop me a message. I'll take it from there. --- `Google Tag Manager · Google Analytics 4 · GA4 · GTM · Server-Side Tracking · Meta CAPI · Conversions API · TikTok Events API · Facebook Tracking · Google Ads Conversion Tracking · Attribution · Looker Studio · BigQuery · Consent Mode · Cross-Domain Tracking · Enhanced Ecommerce · Enhanced Conversions · Data Layer · Tag Audit · Shopify · WooCommerce · SaaS Tracking`
$80/hr
$2K+ earned
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Moses E. has worked .
I am a persistent software development professional, equipped with 10+ years of comprehensive experience in software industry. Results-oriented and innovative Senior Software Engineer able to easily communicate complex technical requirements to non-technical stakeholders. Excellent leadership record of leading development teams in enterprise-wide development projects. A responsible and articulate individual with strengths in solutions optimization, mobile and cloud solutions and global project management.
Neil G.
$60/hr
$0 earned
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Big goals. Small team. AI as real leverage — on the team you already have. Your team is going hard. The AI tools are on every laptop — so why are the goals still slipping? Not for lack of trying. Nobody has installed the workflow yet. Hiring more people doesn't install it. Two new engineers take three months to onboard, and by then the goals have moved further ahead. You don't need another seat. You need the workflow that turns the AI your team already uses into output you can bet the goal on. I spent the past year building exactly that workflow. Fourteen years shipping production enterprise software gave me the discipline; the past year took those reps and turned AI tools into real leverage instead of variance noise. The workflow stays with your team when the engagement ends — you don't lose the leverage when I leave. Three ways to work together: 1. Scope and ship the piece you can't get to. A goal your team can't reach, scoped into two-to-four weeks. I ship it with AI as the velocity engine and leave the code, the prompts, and the workflow in your repo. 2. Train your team on the AI-augmented workflow. Your team has Claude or Codex and the output's inconsistent. I work alongside them for four-to-eight weeks until the discipline lands and velocity stops being a coin flip. 3. Lead a modernization. A legacy stack you've been afraid to touch. I've led multiple — most recently a .NET-to-Next.js rebuild powered by the AI workflow. Six months end-to-end, one-to-two-week release cycle. Same playbook on yours. How it works: 1. Send a brief. What you're building, where it's stuck, your timeline. One paragraph is fine — I read every one and reply within a day. 2. 30-minute scoping call. We figure out if there's fit and the smallest valuable piece. 3. Paid pilot, two-to-four weeks. I ship the scoped piece. You see the workflow up close. End of the pilot you've got working software AND an honest read on whether to keep going. Rate: $60/hr while my Upwork track record is still building — first-come, first-served, and it stays locked for clients who sign in this window. The rate climbs as more contracts close. If I hit capacity I cap hours to protect the work. Best fit for: • Business owners trying to ship bigger goals with the team they already have • Founders adding real AI features to a Next.js / TypeScript / Postgres app • React Native apps shipping Claude integrations or backend agent workflows • Small teams who want one senior voice owning a feature end to end • Long-term partnerships where the workflow compounds across what you're building If you got a job proposal from me, that means I read your post and decided I can actually help. I don't spam-apply. Take it as an invitation, not a pitch. If you found me through search, send a brief — what you're building, where it's stuck, your timeline. I read every message and reply within a day. If I'm not the right fit I'll say so, and I usually know someone who is. Send me a brief and let's see if there's fit.
$75/hr
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I ship production software in weeks, not quarters, because I build with AI instead of around it. 10+ years, IIT Ropar CSE. Head of Engineering at an AI startup. Before that: VP Technology at a top India D2C brand, 2M+ app installs, 350+ retail stores. WHAT I ACTUALLY DO I run engineering at an AI startup. Before that I was the first tech hire at a D2C brand that is now one of India's largest, where I built and ran the entire stack: React Native apps at 2M+ installs, an in-house POS live in 350+ retail stores, a custom Next.js website running headless on Shopify, internal tools used daily by 1,000+ employees, and the AWS infrastructure holding it all up at roughly $5K/month with near-zero downtime. Alongside that, I take on a small number of outside projects where speed is the constraint, not headcount. WHY I'M FASTER THAN A CHEAPER DEVELOPER I rebuilt my own engineering workflow around AI agents: spec to PR, automated code review, test generation, migrations. It runs in production on a real codebase with a real team, not on a demo repo. What a 3-person agency quotes at 12 weeks, I scope at 4, and the architectural standard holds because the review layer is automated too. That's the reason to hire me over someone billing a third of my rate. You're not buying my hours. You're buying a delivery pipeline that took years to build. WHERE I'M USEFUL 0-to-1 product builds. You have a validated idea and need a real product, not a Figma file. I've done this from zero three times: an EdTech marketplace to 10K paid users, a services platform as first engineer, an omnichannel retail stack from scratch. Fractional CTO and technical advisory. Architecture reviews, AWS cost audits, build-versus-buy calls, interviewing and hiring engineers, and second opinions on decisions you cannot un-make later. A few hours a month, not a full-time commitment. Useful if you have a team but no one senior enough to argue with. E-commerce and retail systems. Shopify, headless Next.js websites, payment gateways, inventory sync, POS, order tracking. Shipped at scale across web, mobile and 350+ physical stores. AI features inside real products. LLM integrations, RAG over your own data, agentic workflows, support and ops automation. Built to survive production, not a weekend demo. Architecture and infrastructure. Monolith-to-services migration, event-driven systems, AWS cost reduction, CI/CD. I've cut real infra bills, not theoretical ones. STACK Node.js, Express, React, Next.js, React Native, PostgreSQL, Redis/Valkey, AWS (EC2, ECS, RDS, S3, CloudFront), Shopify, REST APIs, OpenAI and Anthropic APIs, vector DBs, CI/CD HOW I WORK Fixed-price by default. You pay for the outcome, not my hours, and you know the number before we start. I'll work hourly only when the scope genuinely can't be defined upfront. I take a limited number of engagements so the ones I take actually get finished. Async-first with one weekly call. You see working software from week one, not a status update. I'll also tell you when your idea needs a smaller build than you asked for. That conversation has saved my clients more than any line of code I've written. START HERE Send me the problem, not the spec. I'll come back with an approach, a realistic timeline and a fixed price. Still earlier than that, and not sure whether the thing is worth building at all? Say that instead. I'll give you a straight answer before either of us talks about money, and I'll tell you if you don't need me.
$97.78/hr
$48 earned
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Organised, collaborative, and highly skilled Software Project Leader with +8 years of professional experience in dynamic and deadline driven work environments. Eager to join new challenges to delight its customers with magical experiences. In previous roles developed 10+ Android apps, 2 Flutter apps and 1 iOS apps.
$80/hr
$0 earned
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I’m a developer experienced in building websites and apps for small and medium-sized businesses. I got skills in HTML and CSS3, JavaScript, Python, C#, and so on. Full project management from start to finish Regular communication is important to me, so let’s keep in touch.
$65/hr
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🚀 Senior Backend Engineer | Golang | Java | Python | AI-Augmented Development Senior Backend Engineer with 15+ years of experience building scalable, secure, and production-grade backend systems for SaaS, fintech, analytics, and real-time platforms. I specialize in Golang and Python, designing high-performance APIs, microservices, and event-driven systems with a strong focus on reliability, security, and clean architecture. AI-Ready Workflow I actively use Claude Code, Windsurf AI, and GitHub Copilot in my daily development process to accelerate delivery, improve test coverage, reduce bugs, and ship high-quality features faster without increasing technical debt. Core Expertise • REST & gRPC API development • PostgreSQL, Redis, distributed systems • AWS, Docker, Kubernetes • OAuth2, webhooks, payment integrations • Performance optimization & production hardening I care about shipping reliable systems, writing clean maintainable code, and delivering real business outcomes. Let’s build something scalable and production-ready.
$80/hr
$0 earned
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I AM A DEVELOPER EXPERIENCED IN BUILDING RESPONSIVE WEBSITES FOR BOTH PERSONAL AND BUSINESS WEBSITES.BE IT TO WIN WORK,LIST YOUR SERVICES,OR CREATEA NEW RESPONSIVE ONLINE STORE.I CAN HELP I ALSO SPECIALIZE IN GAME DESIGN AND DEVELOPMENT GIVE ME A TRY AND YOU WILL GET THE BEST SERVICE FOR YOUR PRICE
$75/hr
$400+ earned
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I’m a lead software engineer focused on backend systems, APIs, automation, and AI-powered products. If you have a manual process, disconnected systems, an API-heavy product, or an AI workflow that needs to become reliable software, I can help design and build it.
$80/hr
$0 earned
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PROFILE Motivated developer with 8+ years of commercial and 3 years of freelance experience as embedded / Software developer. Possessed strong C/C++ and HDL language knowledge on implementing design aspects in developing a system throughout SDLC.