About Biotheia: a life sciences marketing consultancy

Helping life science brands get noticed with clear and effective messaging.

What is Biotheia

Biotheia is a life science marketing consultancy and agency, helping life science organisations get noticed with strong, persuasive messaging that resonates with scientific buyers.

We’re here to help overcome marketing challenges caused by unclear messaging, whether at a strategic or execution level.

The services include development of messaging strategies, playbooks, as well as implementation of messaging into key marketing assets. We also offer trainings and workshops for life science marketing teams, or support organisations in a fractional marketing director capacity.

Mission and vision

We're on a mission to fix the most overlooked growth blocker in life science marketing: unclear, empty messaging. Messaging is a growth driver, and crucial for establishing desired positioning.

We believe that commercial leaders shouldn’t rely on guesswork, unstructured opinions, or personal taste. Strategic messaging should be treated like any other critical system: audited, designed, and implemented with current best practices.

This is why we help life science companies visualise gaps with messaging audits, develop clear messaging narratives, and create quality, well-positioned marketing assets across high-visibility touchpoints — so their expertise translates into visibility and better commercial outcomes.

About the Biotheia team

Teja Sirec | Chartered marketer | SOSTAC certified planner | Life science marketing consultant

Teja Sirec, PhD

Founder & Marketing Director

PhD in Life Sciences
Chartered marketer
SOSTAC® Certified Planner

Teja Sirec is the founder of Biotheia and a strategic marketing consultant specialising in messaging for life science and biotech companies.

Her professional background spans both sides of the equation: a PhD in Life Sciences, and Chartered Marketer status, plus years of strategic and hands-on experience driving marketing programmes for life science companies.

Her approach to marketing is pragmatic and quality-oriented. This means that she prioritises thorough research, marketing best practices and human creativity.

Rosario Micillo, MSc

Operations Director

MSc in Industrial Engineering
PRINCE2-qualified
Ex-Amazon

Rosario Micillo is the Operations Director at Biotheia, driving the business operations, partnerships and business development.

He is an engineer by training with experience working across small and global organisations in technical and commercial roles. He’s experienced in complex project management, and he worked as a programme manager at Amazon.

His approach to business is practical and data-driven. He prioritises human connection, clear workflows and analytical thinking.

Ready to get your messaging on track?

Get in touch

Our life sciences background

The Biotheia founder, Teja Sirec, has spent 15 years in the life sciences as a lab scientist (initially) and a marketer (now).

In the commercial environment, she worked in content, strategy and leadership-oriented roles in life science businesses, marketing the products and services to:

Academia

Biotech companies

Pharma and Biopharma

Contract organisations (CDMO, CRO, CMO)

The Biotheia team is experienced in building life science marketing strategies, creating messaging frameworks and turning them into marketing outputs that drive growth.

Most of our customers are analytical instrumentation companies, reagent and consumables suppliers, and service-based businesses (CxOs, or other custom services).

Let's connect

Who we help

We work with commercial leaders in life science companies who know their legacy messaging is holding them back — but want a structured, pragmatic way to fix it.

Companies that require strategic messaging support typically navigate change:

Messaging misaligned with new business reality

Mergers and acquisitions

Business strategy pivots

New product launches

Biotheia also supports marketing teams that don’t have enough internal bandwidth or specialised skill sets to deliver on some of the campaigns or marketing assets. Also, we deliver marketing trainings and workshops that are tailored for life science brands, that are marketing products and services to technical audiences.

We need support

How do we help

We help life science companies improve their marketing effectiveness through strong messaging.

We do this on 3 levels:

1) Strategy: Audits, messaging development, playbooks.

2) Delivery: Marketing assets and campaign creation including scientific commercial copywriting and design.

3) In-house team support: As a fractional marketing director or with the delivery of marketing trainings and workshops.

We need this

Testimonials

Michael Ries, Director of Marketing & Sales

Cube Biotech

"Teja supported us with a product launch by creating a messaging strategy and comms deliverables. The launch was a great success for us. The project itself was running smoothly, the feedback loops were great and the internal team was also happy. The output documents were very professional."

Kathrin Brenker, CEO &
Co-founder

opto biolabs

"We worked with Teja on the LinkedIn content programme. Her posts exceeded my expectations, she understood our company incredibly quickly and delivered content that genuinely sounded like us. Teja also captured our scientific tone perfectly and turned complex ideas into posts and visuals that consistently performed beyond expectations. With her strategic approach to LinkedIn comms, she brought a fresh perspective we needed."

Tim Craggs, CEO

Exciting Instruments

"Teja’s deep sector-specific marketing expertise, gained over many years working with scientific instrumentation, made her ideally positioned to support Exciting Instruments as we launched our marketing initiatives. She provided both strategic and tactical guidance through a well-researched, thoughtful, and targeted marketing plan. Working with her has been an absolute pleasure; she helped us scale our marketing efforts with professionalism and diligence, taking us swiftly from 0 to 1 and setting us up well for the future".

Nasr Esfahani, Founder

Guaranta

"I hired Teja to create a marketing plan for my microfluidics consultancy business. She first built an actionable marketing strategy that was perfect for the size and scope of my company. We also implemented numerous marketing-led updates to the content and structure of my website. Teja was fantastic to work with, her communication was excellent, and she was always punctual. I’m thrilled with the outcome. 🙂 I now have clear business messaging and a concrete marketing plan. I’d be delighted to work with her again".

Blaž Cugmas, CEO

Vetamplify

"Teja helped us get started with marketing when we launched our veterinary CRO business. Although our business field is very niche with almost no good examples, her consultation was full of actionable value, and we successfully launched a website and initial marketing activities. Teja's guidance was easy to follow. As a result, the first stage of business development was well realized".

Greta Faccio, Founder

Walking Inventions

"Teja has been amazing in helping me shape a clearer and more strategic way to talk about what I do in innovation and IP. She helped me bring out my USP and show inventors the real value of my services. Her guidance made everything feel more structured, more visible, and much more ‘me’ ".

Samuele Lisi, Consultant

Sustainable Marketing Consultant, Life Sciences

"Clarity, confidence, expert insights. This is what you get with a coaching session with Teja. I am also a marketer, but Teja brought me an extremely valuable external perspective. Before meeting her, my offer had gaps, and I struggled with pricing. But she provided insights that would have taken me forever to see. Thanks to that, I tweaked my messaging and secured leads through a multichannel marketing campaign. When you're a founder, a consultant, or the only marketer on your team, getting expert support can unblock a sticky situation and empower you to face them now and in the future".

Victor Lee, Founder

MedProductions

"I highly recommend Teja for her strategic marketing expertise. She helped us bring clarity and direction to MedProductions’ marketing when we had too many ideas and no clear focus.
Her guidance helped us prioritize what actually works. Her recommendations led to more targeted engagement from our ideal clients and has already started bringing in inbound leads.
Her insights have been thoughtful, practical, and directly impactful to our growth. We continue to consult with her whenever we need expert marketing advice."