our team

we strive to be the best

We invest in our people and infrastructure to enable us to be highly flexible, efficient and innovative. 

As we have grown our team, our core focus remains:

  • People – investing in and developing our employees to be experts in their fields
  • Professionalism – providing our Clients with clear, practical technical solutions, efficiently
  • Passion & Participation – creating an environment of knowledge transfer
  • Performance – delivering on commitments to clients with flexible, integrated solutions
  • Process – Quality processes with understanding of, and strict compliance within all regulatory frameworks

We are proud of our heritage which is one of technical excellence and strong core values.

Meet The Team

Senior Management Team

GMDP Team

Regulatory Team

Pharmacovigilance Team

Administration Team

Senior Management Team

Jo Bunyan

Jo Bunyan

Managing Director / QPPV

Managing Director

About Jo

Jo is one of the original co-founders of Callisto Consulting in 2003. She studied Applied Biology in Liverpool and subsequently went on to obtain an MSc in Pharmacovigilance through the University of Hertfordshire. She acts as a QPPV and also an RP Having undertaken the RP Gold Standard training. Her early career was spent working for a variety of different companies in a regulatory capacity including the Ministry of Agriculture and Boots Pharmaceuticals. She has a broad range of experience across regulated activities covering pharmacovigilance, regulatory affairs and GMP/GDP. Outside of work life is consumed by horses, dogs and skiing.

Paul Bunyan

Paul Bunyan

Operations Director

Operations Director

About Paul

Paul is a Chartered Chemical Engineer with a proven technical and business leadership background. An early career in engineering design and Project Management across the food, drink and pharma sectors provided the foundations for operating at Board level in companies, developing and implementing operational and financial business strategies. Paul joined Callisto in April 2021 and is responsible for the financial and business administration activities as well as ensuring all business and technical systems are fit for purpose to support company growth. Outside of work Paul plays cricket and hockey and enjoys skiing and riding his motorbikes.

Jo Vallans

Jo Vallans

Head of Pharmacovigilance

About Jo

Jo returned to work at Callisto in March 2020 after gaining experience with the Pharmaceutical Industry working for a THR/Homeopathic Medicines Manufacturer. Previous to this Jo had worked for Callisto for 7 years. Jo has a Biological Sciences degree and has worked within the Pharma Industry since 1991!! Jo started her career at Boots in the laboratory, moving into the Medical Affairs Team and then into Pharmacovigilance and Regulatory. Jo also was self-employed for 2 years providing both PV and Reg services to her clients. Jo has a wealth of experience in both PV, Regulatory and Medical Information and has a proven managerial background. At Callisto, Jo is responsible for the day-to-day management of the PV and Regulatory Teams ensuring that processes and procedures are adhered to, and staff are supported in their daily work and development. In her spare time, Jo is a frequent gym goer and walker. Jo also enjoys spending time with her family and friends, likes food and listening to music.

Marie Walsh

Marie Walsh

Technical & Business Development Manager

About Marie

Marie is an experienced Regulatory Affairs professional, with over 20 years in the industry. Her experience covers human and veterinary generic medicines and medical device products. Over her career, she has gained much experience in almost all facets of the pharmaceutical industry including regulatory, pharmacovigilance, new product development and GMDP activities, with a particular interest in the commercial consequences of regulatory strategy. Having completed her MBA in 2021, Marie joined the team at Callisto in March 2022, to support the development of our business moving forward.

Steve Davenport

Steve Davenport

Quality Director / QP

About Steve

Steve returned to Callisto in October 2024 after spending 3 years working for a company providing sterile fill finish services for biological medicines using in both commercial products and investigational medicinal products.

Prior to this Steve spent 7 years at Callisto managing the quality system and providing contract QP services to a range of clients.

Steve has a degree in Applied Chemistry from the University of Northumbria and started his career in the Pharmaceutical industry at Sanofi in 1993 and attained his QP eligibility in 2008.

Steve has held managerial positions in QC, QA and Production Management and has experience in a wide range of dosage forms including tablets, capsules, liquids, creams, steriles and biologics.

At Callisto Steve is responsible for the day-to-day management of the Quality team as well as providing support to the PV and regulatory teams and giving technical support to Callisto and their clients.

In his spare time Steve enjoys spending time with the family including his two young grandchildren that keep him fit. Steve is a keen golfer, football follower and guitarist and enjoys listening to a wide variety of music.

GMDP Team

Spyros Methenitis

Spyros Methenitis

Technical Manager/QP/GMP Lead

PV Executive

About Spyros

Spyros is a highly qualified and experienced pharmaceutical professional with nearly 15 years of experience in the industry. He is a Qualified Person (QP) ,in both the EU and the UK, bringing his expertise in quality systems, risk management, validation, and computer system validation (CSV) to the role.

Throughout his career, Spyros has been responsible for implementing and managing quality systems, ensuring compliance with regulatory requirements, and identifying and mitigating risks in the manufacturing process.

Spyros is also a Chartered Lead Auditor with a strong focus on continuous improvement. He has led numerous audits and assessments to identify areas for improvement and has implemented measures to enhance quality and compliance. His expertise in risk management has helped organizations to proactively identify and manage risks, ensuring that products meet regulatory requirements and are safe for patients.

Spyros holds a Bachelor’s degree in Chemistry and he is a Member of the European QP Association. He joined Callisto in April 2023 as Technical Manager/QP, his passion for quality and compliance, combined with his extensive experience and expertise, make him a valuable asset to our team.

Raheesa Ashraf

Raheesa Ashraf

Quality Associate/RP

PV Executive

About Raheesa

Raheesa is currently an MHRA registered Responsible Person (RP) with Pharmaceutical and Community Pharmacy Background. An early career in community Pharmacy across a number of well-known pharmacy chains. Raheesa joined Callisto in March 2022. As Part of the Quality team, Raheesa is responsible for acting as RP, maintaining assigned client WDA licences and fulfilling responsibilities appropriate to these. Outside of work Raheesa enjoys practicing Arts and Crafts.

Amy Searle

Amy Searle

Quality Associate/RP

PV Executive

About Amy

Amy joined Callisto in the Summer of 2022 having previously worked as an RP, RPi and WQP within the pharmaceutical wholesale industry. Amy is responsible for ensuring clients are operating in accordance with UK GDP and assists in providing support on Quality Assurance to the wider business.

Outside work Amy enjoys travelling, gardening, and swimming.

Jill Convery

Jill Convery

Quality Associate

PV Executive

About Jill

Jill joined Callisto as a Quality Associate in September 2021 and is responsible for the management and prioritisation of batch review activities prior to release by the Qualified Persons (QPs). Jill ensures the receiving warehouse and laboratory are informed of the correct sampling and testing requirements prior to arrival, as well as working with the contract manufacturing sites (CMOs) to ensure any concerns are addressed on time. Jill enjoys working alongside clients to ensure the most efficient and quality service is provided. Alongside a degree in Biotechnology, Jill has a background in both QA and QC Pharma, including several years working in a QC laboratory analysing respiratory products, as well as involvement in Quality Management Systems (QMS) and QA Packaging. Outside of work, Jill enjoys walking, cooking, Parkrunning and having fun with her two daughters.

Bradley Peters

Bradley Peters

Quality Associate

PV Executive

About Bradley

Brad joined the business as a placement student in 2019 and continued to work during his final year of study. Brad has now returned fulltime following the completion of BSc in Biomedical Science at Nottingham Trent University. Within the company, Brad works cross functionally as part of both the regulatory and pharmacovigilance departments to meet the needs of the business. Regulatory work undertaken by Brad includes the preparation of marketing authorisation applications and variations, eCTD submissions and publishing this work.

Rachel Wood

Rachel Wood

Quality Associate

PV Executive

About Rachel

Rachel joined Callisto as Quality Administrator in March 2021 and has now completed her Level 4 Quality Practitioner Apprenticeship getting a distinction in May 2023. Within the company, Rachel provides administration support to the Regulatory, Pharmacovigilance and Quality departments. As part of the Quality team, Rachel is responsible for administering the Quality Management Systems, providing Audit support to clients helping for client purposes, maintaining training records and recording KPIs. During her free time, Rachel enjoys photography, fitness and yoga.

Juliet Mathew

Juliet Mathew

Quality Associate

PV Executive

About Juliet

Juliet joined as a Quality Associate at Callisto in April 2024 bringing with her over 12 years of experience in QC, QA, and compliance roles. Juliet completed her BSc in Forensic Science from De Montfort University in 2012. At Callisto, she oversees various tasks including APQR management, deviation handling, risk assessments, QPD management, training record maintenance, QMR preparation, and KPI monitoring. Outside of work, Juliet finds joy in playing badminton and loves spending time with her family and friends.

Rukhsana Khan

Rukhsana Khan

Quality Associate

PV Executive

About Rukhsana

Rukhsana completed an MSc in Biochemistry from the University of Manchester in 2017. Upon graduation, she started working as an R&D scientist before transitioning to Quality Assurance. She joined Callisto in October 2023 and now focuses on maintaining the vendor assurance schedule, overseeing batch release activities, and managing change controls. Outside of work, Rukhsana enjoys traveling, hiking, and spending time with family and friends.

Chloe Knox

Chloe Knox

Quality Associate

PV Executive

About Chloe

Chloe joined Callisto as a Quality Associate in June 2024 and has several years industry experience both in QC and QA. She completed a master’s degree in chemistry at the University of Glasgow in 2014. At Callisto she supports/maintains the Pharmacovigilance and Regulatory Quality Management Systems, assisting with self-inspections and customer audits when required. Outside of work, Chloe enjoys running, hiking, climbing, cooking, travelling, and spending time with family and friends.

Regulatory Team

Charlie Mayes

Charlie Mayes

Regulatory Manager

PV Executive

About Charlie

Charlie joined Callisto in 2017 as Regulatory and Pharmacovigilance Officer, having previous experience working in the chemicals regulatory sector. Since then, Charlie has grown alongside Callisto to become Regulatory Manager and has contributed meaningfully to the growing success of the Company. Unfortunately for Charlie, in his spare time, he follows Derby County. He also enjoys walking his dog, Drogo, in the Peak District.

Claudia Citrolo

Claudia Citrolo

Deputy Regulatory Executive

PV Executive

About Claudia

Claudia has completed her bachelor’s degree in Molecular Biology and master’s degrees in Biomedical Sciences and Pharmaceuticals Technologies in Italy, before moving to England in Summer 2014. She has worked in the Regulatory Affairs department of a generic pharmaceutical company for over 7 years, gaining experience on national, DC/MRP variations and licencing procedures. Claudia joined Callisto in March 2022 as part of the regulatory team, where she is involved in the preparation of marketing authorisation applications, life cycle management of existing licences and other regulatory activities. Claudia enjoys reading, travelling and spending time with her friends and family.

Elysia Farrell

Elysia Farrell

Senior Regulatory Executive

PV Executive

About Elysia

Elysia joined Callisto as a graduate in 2020, after gaining a first-class degree with Honours in Biomedical Science from Nottingham Trent University. Within the company, Elysia works cross functionally as part of both the Regulatory and Pharmacovigilance departments, specifically in relation to Medical Devices. As part of the Medical Devices team, Elysia is involved in the preparation of Technical Files, with a more recent focus on the transition from the MDD to MDR, the registration of devices, undertaking specific responsibilities within Callisto as a UK Responsible Person and Elara as an EU Authorised Representative, and ensuring the vigilance requirements are met. Alongside this, other regulatory activities relating to medicinal products include marketing authorisation applications, variation submissions and building eCTD submissions for publishing. During their free time, Elysia enjoys running, trying different foods, and exploring new cities.

Gayle Fairless

Gayle Fairless

Senior Regulatory Executive

PV Executive

About Gayle

Gayle completed a MChem in Chemistry at the university of York in 2005. She has held various positions within industry including as a project scientist, analytical chemist and working on consumer trials. Gayle moved into medicinal regulatory affairs in 2012, initially working on lifecycle maintenance of OTC products at Reckitt Benckiser, before joining a generic prescription liquids manufacturer in 2015 to work on New Product Development for the EU and ROW product rollout. Here she gained experience in authoring the CMC dossier, marketing authorization applications and she was the administrator for the regulatory information management and eCTD publishing system.
Gayle Joined Callisto in May 2024 as a Senior Regulatory Executive where she is involved in preparation of marketing authorization applications, variations and other regulatory activities.
In her spare time, Gayle enjoys skiing, mountain biking and attending live music events.

Sarah Bains

Sarah Bains

Senior Regulatory Executive

PV Executive

About Sarah

Sarah completed a MEng in Biomaterial Science and Tissue Engineering at Sheffield University in 2009. Upon graduation she completed a PG Cert in Intellectual Property. Following this her first regulatory role was for a generics medicine supplier. She has gained the majority of her regulatory experience working for a liquid medicine manufacturer, where she was involved in the life cycle management of existing licences.

Sarah joined Callisto in September 2022 as a Senior Regulatory Executive. She is involved in the preparation of marketing authorisation applications and variations.

Fahad Sheth

Fahad Sheth

Regulatory Executive

PV Executive

About Fahad

Fahad completed a MChem in Chemistry with Medicines Development at University of Bradford in 2015. Upon graduation, they spent some time working in Regulatory Affairs Post Approval and Maintenance at Reckitt Benckiser. Following this role Fahad worked in Regulatory Affairs at Mundipharma and AstraZeneca in submissions and CMC functions. Fahad has spent the last 4 years within the Foods for Special Medical Purposes and Food Supplement industry supporting submissions and projects. Fahad joined the team at Callisto in March 2022. As part of the regulatory team, Fahad is involved in the preparation of marketing authorisation applications, building eCTD submissions and publishing. Outside of work, Fahad enjoys hiking, football, going to the gym and travelling.

Alex Reese

Alex Reese

Regulatory Executive

PV Executive

About Alex

Alex joined the Regulatory team at Callisto in June 2021, after completing his MSc in Cancer Immunology and Biotechnology following on from studying BSc Genetics, both at the University of Nottingham. As part of the regulatory team, Alex’s duties include preparing of variations to marketing authorisations and submission of initial applications for pharmaceutical products in Europe and the UK, via such routes as the MRDC Reliance Procedure. Whilst at Callisto, Alex has also been involved in the production and maintenance of technical documentation for medical devices in the US, UK and Europe. Outside of work, Alex enjoys music, sport, having recently taken up golf, and travelling, for which he has been studying Portuguese.

Aparna Bhilare

Aparna Bhilare

Regulatory Executive

PV Executive

About Aparna

Aparna completed her Bachelor of Pharmacy degree in 2017. After that, she joined Aurochem Laboratories as a trainee in the Regulatory Affairs Department. Since then, she has been working in the field of regulatory affairs. As a regulatory affairs officer, Aparna has been involved in the regulatory submission of pharmaceutical products in many semi-regulated and non-regulated countries. She has experience in CTD preparation, query resolution, product registration, and artwork checking.

Away from work, Aparna is interested in Cooking, travelling & Bollywood movies.

Pharmacovigilance Team

Ellie Bunyan

Ellie Bunyan

PV Manager

PV Executive

About Ellie

Ellie joined Callisto in 2016 as a part time Pharmacovigilance Officer. Upon graduating in 2019 from Nottingham Trent University with a First Class Honours Degree in Biomedical Science, Ellie joined Callisto full time and is currently Deputy PV Manager. She is responsible for ensuring a range of routine pharmacovigilance activities, such as producing/checking product safety reports, brand leader reviews, and reporting of spontaneous cases, are conducted to a high standard in a timely manner. She is also responsible for the testing and comparison of Patient Information Leaflets, writing readability outcome reports and bridging reports to support dossier applications. In her spare time, Ellie enjoys weight training and regularly competing her horses.

Daniela-Izabela Dumitrica

Daniela-Izabela Dumitrica

Senior PV Executive

PV Executive

About Daniela-Izabela

Izabela completed a B.E. in Biotechnologies at Babes-Bolyai University in 2016. Following graduation, she spent a couple of years working in the Pharmacovigilance department of a top 10 specialty generic pharmaceutical company. Here, she paved her way to the position of Deputy Case Processing Supervisor, where she gained the foundation of her current experience. In 2020, Izabela began working as an assistant editor at a publishing company for peer-reviewed, open access journals. After realising her passion for the Drug Safety domain, she joined Callisto in April 2021 as a Regulatory & PV Executive. Here, Izabela is involved in the weekly pharmacovigilance obligations, as well as periodic activities, such as Periodic Safety Update Reports, signal detection and Risk Minimisation Measures. During her free time, she enjoys hiking, traveling and reading, and she also tries dabbling in arts and crafts.

Valeriia Fedorenko

Valeriia Fedorenko

Senior PV Executive

PV Executive

About Valeriia

Valeriia joined Callisto in August 2024 after spending the previous 5 years working in a Ukrainian Pharmacovigilance company. She started as an Administrative Assistant and worked her way up to Deputy Director in Pharmacovigilance.

Valeriia gained a degree in Pharmacy from The Bogomolets National Medical University, graduating in 2021.

In her free time, she enjoys art, reading, and baking.

Isabelle Agar

Isabelle Agar

PV Executive

PV Executive

About Isabelle

Isabelle joined Callisto in July 2022 after spending the previous 3 years within the pharmaceutical industry in both primary and secondary care account management. Here, she successfully sold influenza vaccines and pre-filled syringes for emergency medicine, working her way to becoming team leader.

Before this, Isabelle gained a first-class honours degree in Psychology from The University of Birmingham, graduating in 2019. Within Callisto Pharma Group she works as an integral member of both the PV and Regulatory teams.

Outside of work, she enjoys regularly competing her horse, playing tennis and walking her dogs. 

Kieran Busby

Kieran Busby

PV Executive

PV Executive

About Kieran

Kieran completed a BSc in Biomedical Science at Lincoln University. Graduating and beginning to work within an ISO:150189 accredited microbiology laboratory testing COVID-19 samples has provided him with rigorous attention to detail and set him up well for a role in pharmacovigilance. Kieran joined the team at Callisto in March 2021 and is part of the pharmacovigilance team that are responsible for all aspects of pharmacovigilance such as Product Safety Reports and routine activities. During his free time, Kieran enjoys walking, especially around nearby Elvaston Castle, listening to music and trying out new foods.

Ollie Phillips

Ollie Phillips

PV Executive

PV Executive

About Ollie

Ollie joined Callisto as a graduate in March 2021, after gaining a Master’s degree in Pharmacology from Nottingham Trent University. Within the company, Ollie works cross functionally as part of both the regulatory and pharmacovigilance departments. As part of the regulatory team, Ollie is involved in the preparation of marketing authorisation applications, building eCTD submissions and publishing. He has also had experience working with medical devices and clinical evaluation production. Additionally, Ollie is responsible for the monthly regulatory intelligence newsletters which identifies important regulatory information for our customers. While also working in pharmacovigilance, Ollie completes routine PV services including safety report preparation and literature screening to help maintain the safety profile of our customers products. In his spare time, Ollie enjoys playing golf at his local club in Beeston as well as county badminton. He is also a keen cook and always enjoys trying something new from anywhere around the world.

Isobel Lee

Isobel Lee

PV Executive

PV Executive

About Isobel

Isobel joined Callisto in the Summer of 2022 after spending the previous 2 years working as a laboratory scientist at the NHS University Hospitals of Derby and Burton.

Isobel graduated from the University of Manchester in 2020 with a BSc.(Hons) in Biology. As part of the PV team, Isobel is involved in all aspects of pharmacovigilance, including Literature searching, Case reporting, analysis of adverse event reports, preparing monthly PV summaries, PSMF updates and safety reviews.

During her free time Isobel enjoys keeping fit and travelling.

Bradley Piper

Bradley Piper

PV Officer

PV Executive

About Bradley

Brad joined Callisto in September 2022 after graduating from the University of Central Lancashire with a BSc (Hons) in Physiology & Pharmacology in the summer of the same year.

As part of the PV team, Brad is involved in all aspects of pharmacovigilance, including Literature searching, Case reporting, Analysis of adverse event reports, Preparing monthly PV summaries, PSMF updates and Safety reviews.

In his free time, Brad is an avid Newcastle United fan, film lover and likes visiting new countries.

Matt Magyar

Matt Magyar

PV Officer

PV Executive

About Matt

Matt started out in the fitness industry as a qualified personal trainer, which then inspired him to pursue a career where he can solve health and safety related problems on a wider scale.

After successfully completing an undergraduate degree in Applied Pharmacology with a first-class honours, Matt worked within a laboratory setting at an NHS hospital in the biochemistry department. He joined Callisto in 2023 and is now a part of the PV team where he is involved in various pharmacovigilance processes such as writing safety reports, literature searching, case processing, monthly PV summaries, medical information and PSMF updates.

In his spare time, Matt loves working out in the gym and spending quality time with friends and family.

Ankit Thapa

Ankit Thapa

PV Officer

PV Executive

About Ankit

Ankit graduated from the University of York with a BSc (Hons) in Biology in the summer of 2022. He joined Callisto in July 2023 after taking time to travel across his home country of Nepal following his graduation.

Within the PV team Ankit is involved in a range of pharmacovigilance activities including Literature searching, case reporting, Analysis of adverse events reports, PSMF updates and PV summaries and Safety reviews.

Outside of work Ankit is a keen Liverpool FC supporter and enjoys spending his time listening to music and reading.

Sophie Wilson

Sophie Wilson

PV Officer

PV Executive

About Sophie

Sophie joined Callisto in 2024 to complete a placement year while studying neuroscience at the university of Bristol. As a PV officer Sophie is involved in routine PV activities, brand leader reviews, periodic safety reviews and PSMF updates.

She loves attending live music events in her free time, as well as lifting weights and spending time in nature.

Josh Lawrence

Josh Lawrence

PV Administration

PV Executive

About Josh

Josh joined Callisto in May 2019 as a Pharmacovigilance Officer. Since then, he has increased responsibilities in all fields within Pharmacovigilance, regulatory and financial administration. Josh is responsible for user testing, complaints, quality checking, monthly statements while also helping with new business onboarding and pharmacovigilance activities. When Josh is not at work he enjoys playing golf and football.

Administration Team

Sam Bunyan

Sam Bunyan

Senior Financial Executive

PV Executive

About Sam

Sam joined Callisto in January 2018 and has since obtained the Certificate in Business Accounting and is currently working towards qualification as a Chartered Management Accountant with CIMA. Within the company, Sam works cross functionally as part of both the financial and pharmacovigilance departments. Sam is responsible for payables, invoicing activities, and the general bookkeeping. Alongside this, pharmacovigilance activities include routine reviews of product safety information and the submission and maintenance of product information on XEVMPD. During his free time, Sam enjoys skiing and is a keen PC gamer.

Isabella Paterson

Isabella Paterson

Marketing & Business Development Officer

PV Executive

About Isabella

Isabella joined Callisto in 2024 after graduating with a first class hounours BSc in Digital Arts Computing from Goldsmiths University. Isabella works across the Marketing & Business Development side of the business including events and promontional materials, website and social media managment, artwork packaging designing, and account managemnet reports.
Outside of work Isabella keeps up with her training in traditional oil painting & drawing, and loves spending time outdoors with family, friends and animals.

Josh Bunyan

Josh Bunyan

Project Manager

PV Executive

About Josh

I graduated with a degree in Physics from the University of Leeds in 2013. I then worked for a Test Consultancy advising businesses on their testing strategy for SAP implementations. After that I worked for company providing control system software to the railways as a software tester. This then developed into test and project management roles. Outside of work I enjoy playing football and golf.

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