Hire the Best Collection Agencies in California
Del Mar, California
Hi there! I’m Sebastian, a dedicated and detail-oriented freelancer with over 6+ years of experience helping businesses grow through accurate lead generation, email sourcing, and data collection. Whether you’re a startup or a scaling company, I’m here to help you find and reach your ideal customers, fast and efficiently. ✅ My Expertise Includes: • Lead Generation (B2B & B2C) • Email List Building & Verification • LinkedIn Research, Prospecting & Outreach • Web & Market Research • Contact & Database Building • Valid & Verified Email Addresses • Virtual Assistant Tasks • Real Estate Lead Research • Social Media Marketing & Management • AI Research & Tool Integration • CRM Updating & Admin Support • Cold Calling & Telemarketing (if needed) • Data Scraping, Mining & Cleanup • PDF to Excel/Word Conversion Contact Info Research Industry Business Search Lead Prospecting Enrich Accounts Contact Details Research Email Extraction Custom Audience Tools I Use (Paid Subscriptions): 🔹 Lead Generation & Research: • LinkedIn Sales Navigator • ZoomInfo • Crunchbase Pro 🔹 Email Extraction & Sourcing: • Hunter.io • Snov.io • Apollo.io • Emailsearch.io • ContactOut • RocketReach • Kendo, Clearbit, SalesQL, LeadLeaper • Uplead, SalesLift, Rapportive, Prophet 🔹 Email Verification: • Zerobounce • Neverbounce • Mailtester • Gmail Bounce Check Why Work with Me? I combine tech + research + attention to detail to deliver high-quality results. Whether you need verified emails, targeted prospect lists, or VA support for ongoing tasks, I’ll get it done with accuracy and speed. ✅ 100% Satisfaction Guaranteed ✅ Long-Term Partnership Friendly ✅ Clear Communication ✅ Results-Driven Approach 💬 Have any questions? Feel free to message me—I’d love to discuss how I can support your next project. 📩 Let’s talk and make your outreach faster, easier, and more effective! Best regards, Sebastian Brumm
- List Building
- Prospect List
- Data Mining
- Email List
- B2B Lead Generation
- Data Collection
- Prospect Research
- LinkedIn Lead Generation
- Data Scraping
- Lead Capture
- Lead Generation
- Sales Lead Lists
- Email Sourcing
- LinkedIn Sales Navigator
- Data Entry
Del Mar, California
I have spent 30 years in enterprise sales across tech, healthcare, and data-heavy industries. I have closed deals, built pipelines from scratch, and rebuilt revenue systems that stalled. I know what a broken funnel looks like before the client does. I run Revenue Alchemy, a B2B revenue consulting practice. I work with founders, sales leaders, and growth teams who are generating activity but not predictable revenue. The problem is rarely effort. It is usually architecture. Before I recommend anything, I diagnose. I find the real constraint in your deal pipeline, whether that is a trust gap, a leaky funnel, a positioning problem, or a scaling ceiling. Then I install the fix in the right order. What I do on Upwork: B2B Lead Generation and Prospect Lists. Clean, verified, targeted lists built to your exact ICP. Not volume. Precision. Every list is reviewed before delivery, so you are not cleaning data before you can use it. LinkedIn Outreach Strategy. Sequence design, messaging frameworks, and connection strategy built for B2B decision-makers. I have run enterprise-level LinkedIn outreach. I know what gets a response and what gets ignored. Email Outreach and Cold Email Systems. Campaign strategy, sequence writing, and list matching. Built to convert, not just to send. Sales Process Diagnostic. If your pipeline is full and your close rate is low, something is broken upstream. I find it. Revenue System Builds. For clients who need more than a list or a sequence. Full GTM architecture, ICP definition, offer positioning, and outreach motion, built to run without you doing everything manually. For list-building and prospect research projects, my team operates under my direct oversight. I review every deliverable before it reaches you. Work starts at $35/hr for execution-level projects. If you want my personal involvement in strategy, ICP definition, or outreach architecture, that is a separate engagement priced accordingly. What makes this different: You get 30 years of enterprise sales judgment on your project, not a junior VA running a tool. I oversee every engagement, review every deliverable, and tell you what I actually think. If your brief does not align with your goal, I will tell you before I start, not after. 📌 Important Note I work with a small, focused team that handles execution under my direction. For clients who want my direct involvement in strategy and system design, this is available through a separate consulting engagement with different pricing. Ready to get started? Send me a message with your industry, your ICP, and what you are trying to fix. If it looks like a fit, I will send a short 15-minute intro call link so you can confirm I am a real person before we move forward. Let's find the real constraint and fix it. Kathryn 💼 What We Deliver ⚫B2B Lead List Building ⚫Targeted Prospect Research ⚫Email Verification (manual and tools) ⚫Apollo and Sales Navigator data pulls ⚫LinkedIn-based prospecting ⚫Event list building from Eventbrite and LinkedIn Events ⚫Podcast guest research ⚫Property owner contact sourcing ⚫Industry-specific CEO, VP, Owner lists Everything is vetted by my team and reviewed by me, so you can start outreach without cleanup or guesswork. Tools My Team Uses Apollo, Sales Navigator, Lusha, Hunter, Snovio, ZeroBounce, Skrapp, FindThatLead, Expandi, RocketReach, Crunchbase, Spokeo, BeenVerified, AI Agents, and more. 🏆 Why Clients Hire Us 🔵Clean, accurate data, they do not have to fix 🔵Consistent quality across every project 🔵Transparent, friendly communication 🔵Fast turnaround 🔵A small agency feel with real enterprise experience 🔵You get my brain and oversight without paying enterprise consulting prices
- Lead Generation
- B2B Lead Generation
- Prospect List
- Email List
- Contact List
- Email Sourcing
- Contact Info Research
- List Building
- LinkedIn Lead Generation
- Data Entry
- Data Mining
- Grant Research & Prospect List
- Online Research
- Company Research
- Prospect Research
Los Angeles, California
43 campaigns. 28.1% average reply rate on email. 36.5% reply rate on LinkedIn. 40+ B2B companies across 47 industries. The work is Clay, n8n, LinkedIn outreach, and enrichment waterfalls built to surface signal and get replies. Most teams come to me with the tools already live. They have Clay. They have Smartlead or Instantly. The system still isn't producing because nobody's actually running it. Nobody's checking match rates, swapping enrichment providers when one underperforms, adding a new signal layer monthly, or refreshing sequences when reply rates drop. The tools are on. The system is off. That's the operator gap. I fill it. I build and operate these systems using AI-native tooling -- Claude Code, MCP integrations, and custom n8n workflows -- which means what used to take days gets built and tested in hours. Most Clay and n8n freelancers assemble templates. I write code and build infrastructure. What I've built: - LinkedIn and email campaigns for a B2B SaaS platform: 4,454 connection requests at 52.6% acceptance, 778 replies from 2,132 messages (36.5% reply rate). Consistent discovery calls across both channels in month 1. - Daily DBPR license-change monitoring system for a Tampa restaurant franchise: new establishment and ownership transfer detection via n8n, enrichment via Tracerfy and Clay, hot/warm/cold tier scoring, Smartlead campaign integration across 10 mailboxes and branded domains. 434 prospects sourced and scored in month 1. - Dead pipeline revival for a B2B SaaS company: 800 dormant CRM leads segmented by recency and relationship depth, reactivation sequences written by bucket in HubSpot, loaded into Smartlead. 14% open rate on the cold bucket inside 30 days. - 5 new clients in 2 months for a web design agency, replacing their reliance on networking events with systematic outreach. - ICP list build for a B2B industrial cleaning company: 1,200 contacts across 3 phases with LinkedIn URL enrichment, email waterfall via LeadMagic/Findymail/Prospeo, and personalized first lines from Firecrawl website scraping. 12 quality outbound conversations per week for a location-based SaaS replacing inconsistent cold email with signal-based sequences. What I can help with: - Clay -- ICP scoring tables, signal enrichment waterfalls, research automations, formula logic. If you're paying for Clay and not getting value from it, I can operate it. - n8n/Make/Zapier -- webhook triggers, API integrations, data pipelines, enrichment automation, CRM syncs (HubSpot, Salesforce, Pipedrive, Attio). - Claude Code and MCP -- AI agent development, custom tool integrations, agentic research workflows, and automated personalization at scale. If your system needs to reason about data before acting on it, this is the layer that does it. - Enrichment waterfalls -- LeadMagic, Findymail, Prospeo, Apollo, Hunter, Clearbit. Multi-provider coverage so missed emails/phone numbers don't mean missed prospects. - Sending setup -- Smartlead, Instantly, Lemlist, Email Bison. Domain warm-up, mailbox rotation, deliverability configuration. - Signal detection -- hiring signals, funding rounds, tech-stack change monitoring, business registration changes, LinkedIn company activity. - LinkedIn outreach -- HeyReach, Dripify, Expandi. Connection request sequences, message automation, A/B testing. - List building -- Apollo, Sales Navigator, Apify, Firecrawl, Tracerfy. Verified, enriched, deduplicated lists built to your ICP spec. - Data cleaning and CRM hygiene -- dedup, normalization, re-enrichment of stale contacts. Who this is not for: Teams that want someone to wire up what they've already decided. I scope what will actually convert, which sometimes means disagreeing with the plan you came in with. Send me a message with what tools you're using and what your outbound goal is. Or if you've already posted the job, hit "Invite to Job" and I'll respond within a few hours.
- Marketing Automation
- Automation
- System Automation
- Email Automation
- CRM Automation
- Web Scraping
- Data Scraping
- Task Automation
- Automated Workflow
- Artificial Intelligence
- Omnichannel Automation
- Lead Management Automation
- Marketing Operations & Workflow
- Make.com
- Zapier
Los Angeles, California
I'm a GIS analyst and cartographer with 8+ years of experience translating complex environmental, social, and operational data into maps and dashboards that actually get used. I've built interactive Tableau and ArcGIS Online tools for nonprofit disaster response, developed climate visualizations for international NGOs, and mentored students at Columbia University's School of Professional Studies and Climate School. My work has been featured at the Data Visualization Society's Outlier Conference. I work best with organizations where the data matters - environmental nonprofits, sustainability initiatives, climate advocacy groups, public agencies, and mission-driven teams. Whether you need a polished static map for a report, an interactive web map for stakeholders, or a Tableau dashboard that tells a story, I bring both the technical depth and the communication skills to get you there. My approach is equity-focused, collaborative, and delivery-oriented. I'll ask the right questions upfront so the final product fits your audience, not just your dataset.
- Tableau
- GIS
- GIS Software
- QGIS
- Scientific Writing
- Research Documentation
- Figma
- Microsoft Excel
- Microsoft Office
- KPI Metric Development
- Community Goals & KPIs
- Data Analytics & Visualization Software
- Data Visualization
- Climate Science
- Scientific Illustration
Marina del Rey, California
Top-Rated Upwork Copywriter Turning Your Expertise Into Traffic That Converts | B2B Content Pro | SaaS Content | Forbes and Inc. Ghostwriter I write SEO-powered content that earns you money by attracting qualified traffic to your website. That's it. 💥 PROVEN B2B COPYWRITER WITH 8+ YEARS OF TRAFFIC-DRIVING RESULTS 💥 ⭐⭐⭐⭐⭐ "Rebecca is detail-oriented, adaptable, and consistently delivers polished, well-researched content. It's been a pleasure working with her, and I highly recommend her for any content needs." ~ Nicole Alicea, CEO Brand NV ⭐⭐⭐⭐⭐ "I feel very lucky to have found a true world-class copywriter. Rebecca wrote an awesome mission statement for my About Us page. Looking forward to working with her again soon." ~ Chae T. No, Marketing Director - Proven SEO content writing techniques that launch your services to the top of search results - Helped WhatIsMyIPAddress scale traffic from 3M to 13M unique monthly visitors in under 3 years - Created BorderBuddy page featured in Unbounce "Best Landing Page Examples" ranking page 1 Google - Currently ghostwrite for 2 Forbes Council members publishing in INC. and Forbes - Microsoft Content Studio veteran - trusted by enterprise teams to create email flows, landing pages, and SEO articles - StoryBrand Trained - I make complex ideas crystal clear with simple, powerful storytelling that drives action - Craft BrandScripts, voice and tone guidelines, and conversion audits that give your entire team a clear, consistent messaging foundation - Identify what's costing you conversions -- then fix it -- with website copy audits and rewrites rooted in consumer psychology and StoryBrand strategy - Fix flat, AI-generated copy by restoring the voice, nuance, and humanity that makes readers trust you Whether you're looking for B2B blogs that establish thought leadership or website copy with a heavy pinch of convincing sales power, that’s my jam! With experience managing the entire content funnel, from keyword research to conversion optimization, I work directly with C-suite executives and decision-makers to create content that drives qualified leads and positions you as the obvious industry expert. With my expertise, you'll lock in: - Human-powered copy 100% of the time - Expert-level research skills, even in complex B2B niches (I've written for everything from finance, personal development, health and wellness, cybersecurity to DEI, landscaping, and legal) - DEEP SEO and AEO (Answer Engine Optimization) copywriting knowledge -- I've driven millions in organic traffic growth - StoryBrand framework crafting messaging that removes friction, builds trust, and boosts conversions - Page-one rankings for competitive B2B keywords with content that's wholly unique My specialty is B2B content writing that works for you and generates you actual returns. I'm not about flowery, robotic language, and I don't give you filler. I'm not a bot in disguise, and I won't fill your content with “nuanced landscapes of digital marketing" ! I never plagiarize, and I never outsource. I'm just a great B2B writer who gets stuff done, is obsessed with SEO, AEO, and understands the power of a well-written sentence in making your customers click. Want to work with me? If you can see my profile, I have some availability. Send me a message with your website, and we can jump on a call & get to work. Portfolio: RebeccaCullenWriter
- Creative Writing
- Ebook
- Blog Writing
- Storytelling
- Copywriting
- Corporate Brand Identity
- Proofreading
- SEO Writing
- Article Writing
- B2B Marketing
- Content Writing
- Content Marketing
- Business Writing
- Ghostwriting
- Email Marketing
Los Angeles, California
Hi, I'm David Iya - YC alum, Forbes 30 Under 30, and Full-Stack SaaS Developer. I've built production platforms serving 30K+ users and processing $70M+ in transactions. I've been programming for 10+ years and specialize in turning ideas into scalable, revenue-generating products fast. 🗃 What I Offer: 1) SaaS Development & MVPs 2) Web Application Development 3) Frontend & UI Developments 4) AI Integrations & Automations 5) Integrations & Payment Systems 6) CI/CD + Deployments + Migrations 🚀 Why Clients Hire Me: 1) Clean, scalable engineering and solid architecture 2) Modern UI development with attention to detail 3) Fast delivery with clear communication 4) Secure coding and reliable development practices 5) Strong SaaS understanding and product-first thinking 💻 Recent Work: 1) buildroom.ai - AI automation platform $11K MRR, 400+ paying users 2) ezewholesale.com - B2B marketplace 30k users, $70M+ in transactions processed 3) tryshowplace.com - Real estate video SaaS AI-powered video generation, credit system, user dashboard 4) uselids.com - IoT command center McDonald's partnership, multi-location management, real-time analytics 5) rainwell.co - Capital platform for hardware startups Complex financial dashboards, LOI management system View more: oddwork.co/recent-work Whether you're launching a SaaS MVP, adding AI features, or building a modern web application, I can help you ship a product that's stable, fast, and ready for real users.
- 3D Design
- Design Writing
- Business Consulting
- Startup Consulting
- Pricing Strategy Consulting
- Landing Page
- Social Media Management
- Strategy
- Web Design
- Pitchbook
- SaaS Development
- JavaScript
- Next.js
- Tailwind CSS
- Landing Page Design
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How do I hire a Collection Agency in California on Upwork?
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How much does it cost to hire a Collection Agency?
Rates charged by Collection Agencies on Upwork can vary with a number of factors including experience, location, and market conditions. See hourly rates for in-demand skills on Upwork.
Why hire a Collection Agency in California on Upwork?
As the world's work marketplace, we connect highly-skilled freelance Collection Agencies and businesses and help them build trusted, long-term relationships so they can achieve more together. Let us help you build the dream Collection Agency team you need to succeed.
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Depending on availability and the quality of your job post, it's entirely possible to sign up for Upwork and receive Collection Agency proposals within 24 hours of posting a job description.
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