Lena Sesardic

Etsy Store Owner & Artist

Baddie Women's Circle

A bi-weekly virtual circle for the women who are letting go of a life, relationship, career or version of themselves that “makes sense” on paper for something that’s unorthodox but feels fully aligned.

Founder & Facilitator

The Authentic Advantage

AI & ChatGPT Business Coach

Tulum Girlies Group 👯‍♀️

Founder, Community Manager & In-Person Events Host

TikTok

I create funny & educational TikTok videos about the "casual" side of LinkedIn (handle: @contently_lena.)

My TikTok wins:
- Went from 0 to 100k likes and 13k followers in 14 days
- 15M+ views to date on TikTok
-50+ viral videos
-2000+ downloads of my free LinkedIn Profile Scorecard in 2 months from TikTok
- Collaboration with LinkedIn Marketing Partner, Transmission agency


Want me to create an engaging TikTok video for your brand? Email me at hello[at]lenasesardic[dot]com. 💌

Content Creator & Influencer

GrowthMentor

I'm a GrowthMentor helping product managers, marketers & founders with product management, content marketing, LinkedIn marketing, customer discovery & idea validation.

𝗖𝗵𝗲𝗰𝗸 𝗼𝘂𝘁 𝗺𝘆 𝗚𝗿𝗼𝘄𝘁𝗵𝗠𝗲𝗻𝘁𝗼𝗿 𝗽𝗿𝗼𝗳𝗶𝗹𝗲 & 𝗯𝗼𝗼𝗸 𝗮 𝗳𝗿𝗲𝗲 𝗰𝗮𝗹𝗹 𝘄𝗶𝘁𝗵 𝗺𝗲 𝗶𝗳 𝘆𝗼𝘂 𝘁𝗵𝗶𝗻𝗸 𝗜 𝗰𝗮𝗻 𝗯𝗲 𝗵𝗲𝗹𝗽𝗳𝘂𝗹. 💜

Growth Mentor

Medium

I contribute my writing on lenasesardic.com to two Medium publications:

Start it Up - the largest Medium publication in the world
Product Coalition - the largest Medium publication for product management

I'm also part of the Medium Partner Program.

Contributing Writer

Aviso Wealth

Managing the new NEI Investments website to make sure all content is up-to-date, on brand, and driving key metrics.

Using my PM mindset to run experiments and find new growth opportunities for the new website.

Senior Content Publisher

Product Owner

Transparent Media Studio

Product management can be a little nebulous if you've never been a PM before. Which is why tech companies hire a PM veteran like me to help them write about the craft in a credible way that converts leads to clients.

With 4+ years experience in the industry, I know the PM principles & concepts like the back of my hand and am familiar with the key thought leaders and schools of thought in the space.

You can hire me to do the following:

◆ SEO-optimized blog posts
◆ Newsletters
◆ Emails
◆ Ebooks
◆ Social media posts
◆ White papers

I also offer ghostwriting services for executives in the PM space.

If you want to work with me, send me an email at hello@lenasesardic.com 💌

--

My clients have included companies like Userpilot.com and Arc.dev. You can check out my writing samples attached here.

Freelance Writer / Ghostwriter

-Mentored/advised venture teams in idea validation, customer discovery and mindset.
-Mentored/advised aspiring product managers in how to break into product management.
-Collaborated with individuals & teams on various startup-related projects or side projects.

Mentor, Advisor & Collaborator

Be your unapologetic self & create epic LinkedIn content that converts 😈 //They call me "the LinkedIn Therapist"

Ready to build your Second Brain? 🧠

The Second Brain Project is a 4-week live cohort to help coaches, creatives, and business owners build a high-functioning network of GPTs that automate their workflows, multiply their time & use AI the way it was meant to be used: as your second brain.

By the end of the 4 weeks, you’ll walk away with:
✅ 5–15 GPTs that think like you
✅ A plug-and-play GPT Playground to use instantly
✅ Systems that actually run without your brain being the bottleneck
✅ Confidence to keep building GPTs that save time, increase capacity, and sound just like you


📌 WHAT'S INCLUDED:

- 4 x live weekly trainings (with replays)
- GPT Builder Pro (your personal GPT-building assistant)
- Playground of plug-and-play GPTs (e.g. Sales Call Decoder, Content Sculptor)
- My 6-Step GPT Your Brain Method
- Second Brain Architecture Template (Google Sheet + Notion)
- Bonus GPT Naming Guide

⏰ FAST PASS BONUS:
If you sign up within 48 hours (by Thursday at 10am PT / 1pm ET / 7pm CEST), you’ll also get:

🔓 Early Access to the GPT Library (April 28)
📞 Bonus Live Q&A Call with Me (May 6)


You're already paying $20/month for ChatGPT Plus, but you're using 5% of what it's actually capable of.

This isn’t just about ChatGPT. This is about you building a real system that:

- Thinks like you
- Speaks in your voice
- Handles work you don’t want to do

A system that scales your business & gives you your brain back.

Join The Second Brain Project: https://natural-temple-f15.notion.site/The-Second-Brain-Project-1d9921c15bdc80d09cb8ef9e0607f1fa?pvs=4

Founder & LinkedIn "Baddie" Business Coach 😈

I can help you confidently sell your 4- or 5- figure offers on LinkedIn and get high-calibre clients so you can generate more revenue for your biz, raise your prices and work less!

HubSpot

Building Gen AI products and workflows for the marketing team @ HubSpot

- Spearheaded 15+ generative AI-powered email campaigns reaching hundreds of thousands of contacts
- Acted as the embedded AI engineer and consultant across go-to-market teams, owning prompt engineering, workflow automation, and API integrations using OpenAI, HubSpot Custom Coded Actions, and internal tools.
- Led end-to-end project delivery across stakeholder teams—aligning technical feasibility with business goals, managing feedback loops, and iterating on AI performance to ensure scalable personalization at every touchpoint.
- Mentored incoming AI hires and enabled cross-functional stakeholders to adopt AI tools confidently through hands-on guidance, training, and prompt optimization support.

AI Marketing Technology Manager

- Drove operational efficiency by guiding 6 different teams of product stakeholders to data-driven decisions surrounding go-to-market strategy, resulting in a 25% improvement in time-to-market speed.
- Increased digital engagement by 10% by leveraging SQL, Tableau, and internal analysis tools to optimize product messaging across 5+ channels
- Spearheaded 60% QoQ  efficiency increase for IBM ecosystem’s paid media through advising on messaging and ensuring assets were optimized for Q4 launch. 
- Drove 16% decrease in watsonx campaign cost per engaged visit through copy and landing page analysis across 4 campaigns

Stakeholder Manager - Marketing Operations Professional

Salient Systems

- Collaborated with cross-functional teams (Engineering, Marketing, Sales) to define product vision and align roadmap priorities, ensuring 12+ successful product launches and iterations.
- Spearheaded competitive analysis across 10+ competitors to inform roadmap decisions and drive go-to-market strategy for the company’s flagship SaaS product.
- Owned 4+ social media channels and drove growth of over 96% across all platforms.
- Promoted from intern to associate after 1 year at the company.

Product Marketing Associate

- Increased overall traffic on 4+ social media platforms by an average of 84%
- Created technology partner web page highlighting 50+ unique product collaborations
- Analyzed data to track potential sales lead through Pardot, the Salesforce marketing platform
- Designed graphics for company events, promotions, and website while maintaining consistent brand feel and message

Marketing Intern

- Created an automated database workflow to effectively compare company keyword performance to industry performance
- Performed organic and paid competitor analysis across 70+ products and companies to find competitive whitespace and make actionable recommendations to stakeholders and executives
- Optimized social media and product messaging by analyzing 450+ keywords based on a variety of metrics
- Leveraged audience analysis data to generate in-depth marketing personas across 19 unique accounts
- Executed historical and current market research to find 5 different potential business opportunities related to current and future economic trends

Marketing Professional Intern

Brigham Young University Marriott School of Business

- Attained 96.4% client satisfaction score as the only student led career center in the United States
- Monitored event status of 20+ Fortune 500 clients daily across a team of 25
- Conducted daily standup and facilitated open communication to ensure sprint timelines were met effectively
- Delivered team trainings on agile SCRUM methodology and time management skills to improve client retention

Project Manager

- Proactively and professionally communicated with company recruiters, students, and faculty about on-campus recruiting events and other recruiting needs.
- Carried out events and interviews to connect several clients with students through information sessions and other special events
- Taught company recruiters how to navigate and optimize the recruiting platform, Handshake.

Client Success Specialist

H-Wire Technology Solutions

- Created and managed Instagram account to increase social media presence by over 120% 
- Analyzed 50+ facebook advertisements to determine effective target market 
- Performed A/B testing to aid in rebranding of company

Project Manager, On-Campus Internship

“Marketing touches the heart of the consumer” 

That’s the phrase I heard in my introductory marketing class over 5 years ago, and I’ve strived to remember that ever since. 

I specialize in innovatively growing brands through product, digital, and social media marketing. 

I work with brands both large and small to amplify their brand presence. I’m experienced in agile methodologies and project management, and am passionate about working with teams to put forth the best product possible.

I am a firm believer that marketing and products have the ability to touch the hearts of those around us, and carry this principle in everything I do. I value forming meaningful relationships, always giving 110%, and making the people I work with smile. 

Throughout college, I worked 40 hours a week between two jobs while maintaining a 3.95 GPA. I learned how to apply this work ethic to my professional career, and before I graduated I landed 4 internships, consulted for brands, and started a side hustle of optimizing LinkedIn profiles. 

When I'm not working, I love to play basketball and expand my knowledge of technology.

My passions include reading, lifting weights, and religiously following NBA basketball.

If you are interested in connecting or would like an introduction to a connection of mine, shoot me a message! I would love to help you out in any way I can. 

Keywords

Product Marketing, Growth Product Marketing, Digital Brand Manager, Growth Brand Manager, Digital Marketing, Content Strategist, Account Executive, Sales Development Representative, Account Manager, Brand Advocate, Associate Merchant, Marketing Analyst, Strategy Analyst, Marketing Specialist, Buyer, Associate Buyer, Associate Brand Manager, Brand Manager,

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The Battle

Lena Sesardic

Aubrey Warren

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