Filip G.
Barcelona, Spain
100%
Job Success
Expert-Vetted
Full Stack Developer (MERN) | Hubspot Expert | RevOps Expert
$60.00/hr
Celebrating 12 years on the Platform | Among the top 1% of Freelancers on Upwork
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After 20 years in Marketing I have switched gears to Full Stack Development in MERN Stack but still taking on HubSpot and Demand Generation projects. Check my Full Stack Development profile tab to see my rates.
Open to joining projects for equity/as a cofounder. Extensive commercial experience mixed with Software Development Skills.
Experienced Full Stack Developer skilled in MERN stack application development, with expertise in React, Node.js, Express, and MongoDB. Proficient in building and deploying complex backend systems, RESTful APIs, and databases. Experienced in Agile/Scrum methodology, software testing, and GitHub collaboration.
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Companies with serious growth goals usually invest in one or more of these areas:
- Converting more qualified leads
- Driving more relevant traffic
- Bridging the gap between marketing and sales
- Engaging the right audience earlier in the buying process
- Nurturing leads via super-personalized email experiences
- Measuring precisely what activities bring the most revenue through attribution
The good news is: I can help you with all that, and more.
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You can hire someone with with no experience and who started in digital marketing last year.
Or you can hire someone who has done (digital) marketing professionally for 12+ years with clients among Fortune 500s, fast-growing startups and small businesses alike.
That person is me.
I'm a Senior Growth Marketer and a Fractional CMO with over 3000 Upwork hours focused on performance marketing, content strategy, Hubspot management in B2B and B2C, setting up automation, managing pipelines & reports and more.
I can handle everything from strategy to implementation, from the top to the bottom of the funnel, from content to paid advertising to Messenger bot mapping and implementation.
As a digital marketing expert, I work closely with my clients on the full stack of digital marketing activities and areas:
+ I provide an integrated digital marketing strategy that takes into account your as-is and to-be situation
+ I help you define goals, KPIs and best way to reach them using a whole spectrum of possible channels and tactics: blogs, social media, email marketing, PPC, video, marketing automation
+ I design marketing funnels that take into account your our business goals, your buyer personas and specific points in your buyers' journey.
+ I have the know-how to actually implement all of this having worked on countless projects with hours and hours of hands on experience.
As a media planner for one of the largest agencies in the world, Ogilvy, I worked with large Pharma, FMCG and kids' toys clients from Fortune 500 companies, while as a freelancer I worked with a number of startups and family businesses. (To namedrop a few: Mars, Fanta, THEO Technologies, Proxyclick, UNICEF...).
I am certified both in Inbound Marketing and Hubspot Marketing Platform by Hubspot, and I'm a Certified Hubspot Agency Partner (now known as Hubspot Solutions Partner). I also hold the Social Media Certification from Hootsuite.
Major accomplishments:
- I managed content strategy and FB Ads lead gen for a SaaS startup with very good results (the number of overall leads increased 3x in the first months and has kept a steady growth rate)
- 10+ ROAS on FB Ads for a pet product business
- I published 3 bestselling Kindle ebooks on b2b marketing and social media marketing - ask me for a free copy.
- Lead generation campaign via LinkedIn worth $8m and 400% ROI in ecommerce using Facebook video ads.
- Amazing track record with Facebook Ads: routinely outperforming 90% of the competition with ROAS of 20, 30+. Custom audiences, retargeting campaigns, conversion pixels - I can help you master these and get the most out of your advertising budget.
(Along with that I can help you with advanced Facebook ads techniques: Facebook Canvas ads, Facebook Leads ads, Messenger ads, Carousel and Dynamic Product ads).
- Also well-versed in:
Google Ads
LinkedIn Ads
Bing Ads
YouTube Ads
Previously I have worked for years in general marketing/sales/PR/project management/account management for small start-ups, big multinationals, NGOs and government agencies.
So let's strike up a chat, I first and foremost want to hear about you and your goals before I suggest any course of action.
(And I will never shoehorn a solution in order to close the deal.)
So reach out and let's get started on building your next big thing.
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"We want the best. Better get the cheapest." - No one, ever
Work history
Work history
Full Stack Developer for a HubSpot UI Extension
Nov 18, 2024
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Mar 17, 2025
"Filip did an excellent job developing a deal summary UI extension in React. He was proactive, collaborative, and ensured the extension was both functional and secure. His attention to detail…
Private earnings
Desenvolvedor Full-Stack para criar um site para conhecer pessoas
5.0
of 2 reviews
Oct 7, 2024
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Feb 17, 2025
5.0
"We couldn’t be happier working with Filip. He is highly professional, incredibly friendly, and a pleasure to collaborate with. He didn’t just complete the tasks we assigned him - he…
Private earnings
React App for an Amateur Waterpolo Team in Barcelona
May 28, 2024
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Sep 26, 2024
"Great experience working with Filip on the Waterpolo Team E-Commerce React App project. He demonstrated strong expertise in React.js, Node.js, Express, MongoDB, and Stripe integration. Communication was clear, he really…
Private earnings
30 minute consultation
May 24, 2024
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Jun 5, 2024
"Filip provided a very useful objective perspective in a Demand Gen Marketing brainstorm call. We will use him again!"
Freelancer's response
"I'm glad I was able to provide value on a relatively short notice! Would love to work with you again."
Private earnings
Full-Stack Developer for VR Device Management System Using React, Node.js, and MongoDB
May 20, 2024
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May 27, 2024
"Working with Filip on our VR Device Management System project was an outstanding experience. His professionalism, clear communication, and quick responses ensured a smooth and transparent process. Filip delivered high-quality…
Private earnings
HubSpot Sales Process Review and Improvement
Apr 10, 2024
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May 1, 2024
"Working with Filip was a great experience. He went above and beyond what was expected of him and was generous and flexible with his time. Filip had a great rapport…
Private earnings
60 minute consultation
Feb 21, 2024
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Feb 27, 2024
"We booked Filip for a 1-hour Marketing consultation. He had done research on our website and LinkedIn page ahead of our call and he offered us insightful and valuable advice…
Private earnings
Marketing Specialist, focus on Hubspot, SEO, Goggle ADWords and social media advertising
Dec 12, 2023
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Jan 4, 2024
"Working with Filip is great. Not only is he skilled, he is also alert and very responsive."
Private earnings
Email Hubspot Sequencing for eComm business
Oct 6, 2023
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Dec 3, 2023
"Collaborating with Filip was nothing short of rewarding. His expertise in redefining our HubSpot CRM was a game-changer, streamlining our lifecycle stages and deal pipelines for a more efficient sales…
Private earnings
Hubspot Implementation Pro - F
Nov 4, 2021
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Sep 22, 2023
"Loved working with Filip. One of the best freelancers I've ever worked with. Will 1000% be hiring him again for future projects :D"
Private earnings
API Integration & Automation for Member Communication
Apr 21, 2025
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Present
Job in progress
Private earnings
Focus group survey: C-Suit/Directors/Executives Needed ($100/hr)
Jun 28, 2024
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Present
Job in progress
Private earnings
B2B Paid Media Specialist
Aug 3, 2021
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Present
Job in progress
Private earnings
Shirt advertisements
Nov 23, 2020
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Present
Job in progress
Private earnings
Filip G. has more jobs. Create an account to review them
Skills
Skills
- Marketing Strategy
- Inbound Marketing
- Brand Positioning
- Email Marketing
- Social Media Marketing
- Google Ads
- HubSpot
- PPC Campaign Setup & Management
- B2B Marketing
- Growth Hacking
- Content Management
- Analytics
Project catalog
Get started working with Filip quickly with these predefined projects.
Get started working with Filip quickly with these predefined projects.
You will get Real-Time Website Personalization for Anonymous Visitors
From $580
20 days delivery
You will get an amazing React extension for HubSpot CRM
From $3,200
14 days delivery
You will get an impeccable migration of your CRM to Hubspot
From $1,800
14 days delivery
You will get a fantastic Google Ads Strategy and Management
From $450
29 days delivery