We are Sero

Who We Are

Born from a passion for making a real impact on the carbon emissions we produce from our homes, Sero was founded in 2017. Over the last 6 years, we’ve been busy bees, leading the way on some of the UK’s biggest research projects and developing market-leading technologies and solutions.

Today we’re a team of over sixty individuals, who are proud to be a trusted partner for some of the UK’s largest housing providers, helping them retrofit their homes to Net Zero.

Our experts and technology support housing providers to fund and improve their homes at scale. Together we’re not just tackling climate change but fuel poverty, making sure their residents live in sustainable, affordable, and healthy homes.

 

Interested in joining us

The Sero Journey

Sero was founded by James & Andy.

We achieved B Corp status and commenced works on two new build sites – The Mill and Parc Eirin, delivering low carbon technology in 228 homes.

Sero led the Optimised Retrofit Project for Welsh Government, retrofitting 1,728 homes across Wales with 28 social landlords. We also moved into our Cardiff Hub and received our series A funding from Legal & General and Hodge.

Works commenced on Penderi Retrofit Energy Project – UK’s largest renewable retrofit project of its kind. Sero working with Pobl provides a range of retrofit services including our innovative solar share scheme. 

Hodge and Legal & General, provide us with a second round of investment, enabling us to further invest in our people and expand our team to over 80 experts. 

We partner with Sovereign Housing Group to deliver Retrofit Co-ordination services for 1,000 homes.  

Meet Our Founders

Having worked in Energy and Housing for a long time, James and Andy felt strongly that if they could develop simple and affordable solutions for building and retrofitting greener homes, they could make a real impact.

James is our CEO and is on a mission to help housing providers fund their journey to net zero beyond grant funding, maximising value from our energy systems.  Andy is our Chief Innovation Officer and has a passion for using real-world results in both our algorithms and the insight we provide our clients.

Meet our Team

Rafia Nadeem

Project Co-ordinator - DEA

Rafia’s happiest on cosy mornings, dancing in the kitchen, or off exploring hidden corners of the UK with her son. She describes life as a bit messy, often covered in paint and powered by tea, but she wouldn’t have it any other way.

Josh Skyrme

Systems Engineer

Josh loves spending time with his partner and daughter whether that be chilling at home or adventures out in the sun.

Simon Morris

Manual Test Engineer

Attending the UKGamesExpo with his daughter, where he plays non-traditional board games and role playing game systems he has not experienced before. Especially loves those that he can bring back to play at home with his family and friends or bring to his local gaming group (as well as stories from the expo).

Hibah Rehman

Senior Product Manager

When Hibah isn’t working you’ll usually find her taking long walks in the Chilterns, plotting  mini-adventures with her nieces and nephew, or with her head in a book. She’s always on the hunt for her next great read, so recommendations are very welcome!

Annie Craze

Project Manager

You can usually find Annie enjoying live music in one of Bristol’s many venues, deep in a book, or climbing hills with her two small dogs and her partner who get dragged along for the ride!

Julie Andrews

Customer Care Advisor

An adventurer at heart, Julie is happiest while on holiday with her friends, be it at a nerdy convention somewhere in the UK or a new place around the world she has never visited before. Throw in some tasty food places and perhaps a rum or two and it’s smooth sailing from there!

Antonia Cosgrove

Senior Customer Care Advisor

Often one to take the road less travelled, Toni is a curious adventurer in love with exploring new places and discovering hidden gems. Be it a city stroll down a quirky lane, or finding herself getting lost in a book.

David Easton

Product Manager / Owner

Dave connects business and tech, helping teams focus on what matters and deliver value quickly. With 20+ years across the tech industry, science, media and more, he’s a true all-rounder. He enjoys solving problems and pitching in… everyone needs a Dave! A dad of two he’s swapped his own sporting days for coaching youth football, finding joy in helping young players love the game.

Alex Weaterton

Financial Controller

Loves playing with his two small children, but any occasion that he can leave their incessant demands behind has now become precious! Alex particularly enjoys watching live music in Cardiff when he can escape.

Hannah Thompson

Customer Experience Specialist

Han’s happiest when she is traveling in Buster, the family camper van. From the breath taking scenic roads of Snowdonia to the gravel tracks of forgotten beaches and undiscovered picnic spots. Getting lost is always bonus adventure!

Hannah Rowland-Jones

Project Manager

Hannah is happiest with saltwater skin and sun on her shoulders. A lover of travel, good food and scuba diving. These days, she finds balance between adventure and home – soaking up newlywed life with her husband and their two cats – her little crew of comfort and chaos.

Lizzy Wood

Marketing Manager

When Lizzy isn’t being kept busy by her son, you’ll find her cold water dipping in the sea, at the gym, or visiting her place of calm – New Quay, in West Wales.

Jack Preece

Zero Carbon Retrofit Specialist

Jim McArdell

Head of Projects

Jim loves to be in, next to or just generally within sight of the sea be that surfing the waves, walking on the beach or spending time with the family.

Craig Walters

Customer Experience Manager

Craig’s happiest when life’s simple, spending time with his wife, children, and Cavapoo Frank. Whether it’s cheering on his kids’ latest interests or planning the next family outing, Craig’s all about making memories together. A big sports fan (he’ll watch anything with a score), he’s also into movies, music, and finding the perfect pub: one with great beer, salty snacks, a dart board, and a jukebox full of classics.

Lee Fisher

Technical Manager

Lee is happiest when relaxing at home with his son and Border Terrier dog. In his spare time Lee is a keen musician and loves all live music. Whether it’s a busker, open mic night or following his ageing 00’s Indie heroes….. If there’s a guitar, and a pint, he’ll be there.

Ellie Karamouzis-Jones

Project Co-ordinator

Ciara Murphy

Head of Energy Services Operations

Ciara is happiest when sampling her favourite street food or waking up to a nice new view in the VW (weather permitting!).

Keiron Lloyd

Senior Operations Manager

Keiron is happiest whilst in the Sea, be that dipping his toe during a beach walk with his partner or whilst Scuba Diving in the warmer months (which is ironic given his allergy to Fish).

Gruff Jones

Project Co-ordinator

Mick Ashley

Program Manager

Mick loves being in the great outdoors, whether it’s out on the hills in the lake district, dressed in spandex and exploring on the road bike or pottering in the garden, he is happy! The addition of a cold cider and his wife make it all the more better!

Natalie Jopling

Retrofit Co-ordinator

Natalie loves visiting beautiful locations around the world (her favorite so far being Bali), learning about the variety of different cultures, whilst watching the sunset on a beach with a cocktail in hand.

Amy Hewett

Executive Support Manager

If you’re looking for Amy, chances are she’s somewhere outdoors – wind in her hair, salt on her skin, and a big smile on her face. Whether she’s halfway up a mountain, lost in a forest trail, or stretched out on a beach, she’s in her element when surrounded by nature.
She’s got a deep love for good food, great wine, and even better company. Amy’s all about good vibes, great food, and the kind of laughter that makes your cheeks hurt.

Fuchsia Wildgoose

Zero Carbon Project Coordinator

Fuchsia’s happy place would either be wandering around Westonbirt Arboretum in the Spring, or watching live music surrounded by my friends 😊

Emma Williams

CCO

Emma’s happiest with a good book, a chilled glass of Sauvignon, and an M&S Jaffa Cake (or two). A proud Welsh speaker, mum of two, and Schnauzer dog-mum, she spends most of her time juggling family life and taxi duties. When Emma gets the chance to slow down, you’ll find her in West Wales, where the pace is gentler and the Wi-Fi just patchy enough for some peace and quiet.

Julien Caudron

Senior Data Scientist
Julien’s favourite place is the Belgian rural countryside. His parents inherited an old family building, and he spent a big part of his childhood holidays renovating the house, taking care of the garden and enjoying walks in the surroundings.

Tom WoodWard

Project Manager

Tom is easy to please: he is happiest adventuring around by foot or bicycle whenever and wherever he can. Bonus points awarded when accompanied by sun, trees or at least one dog.

Anne-Marie Ratcliffe

Key Account Manager

Anne-Marie’s favourite place is the Arctic. With each dropping degree in temperature, she gets a degree more alive (though this has only been tested to about 20 so there are probably limits…)

Mike Williams

Business Analyst

Mike’s happiest outdoors, whether it’s walking the dogs through the quiet beauty of rural Carmarthenshire or soaking up the sun by the sea. He’s especially drawn to the coastlines of Southern Europe, where the light’s just right for photography and there’s usually a pint of real ale nearby. For Mike, it’s all about nature, simplicity, and a good view.

Rhys Thomas

Business Development Manager

Rhys loves nothing more than going home to help out on his family farm, it’s only 15 minutes from where he lives now but is definitely his favourite place. After that it would be Italy, especially the Amalfi Coast, simply stunning even if their roads are terrifying.

Sal Lehal

FP&A Manager

Sal’s happiest outdoors, exploring with family, fur-babies included. When the kids are elsewhere, you’ll find him somewhere with good food, great company, and an Aperol Spritz in hand.

Kris Ablett

Head of People & Customer in People & Customer

Kris’ favourite places are the kitchen and the dining table and would gladly spend his life simply moving between the two only venturing outside to light a barbecue.

Andy Sutton

Co Founder & Chief Innovation Officer

Andy likes to be amongst nature or great design (preferable both), whether DIYing, walking, swimming or cycling, though in all instances he’ll want it to be in the sunshine and ending up in a good pub. Or three.

Jason Casati

Software Developer

Jason loves when he’s at home fixing broken hardware with endless amount of open browser tabs and a cup of tea/coffee attached to his hand.

Kane Dunning

Project Manager

Kane’s happy place is anywhere his family and friends are, especially if there’s food, laughter, and someone else doing the dishes. But his happiest place? That’s the golf course, where the perfect shot is just one swing away. When he’s off the fairway, Kane’s all about making legendary memories with his wife, son, and daughter.

Melissa Jones

HR Manager

Melissa’s happiest after a busy day, curled up on the sofa with a good TV series and her husband or having  a quiet drink at the local pub. When she’s not chasing after her daughter, she’s discovering a new love for kettlebells at the gym, and loving the challenge!

Nathan Chiverton

Senior Software Engineer

Nathan is happiest when spending time with friends, whether that is at the pub, a local gig or a trip away. When he isn’t spending time with friends, he loves listening to music & adding to his ever growing collection of records.

Tiago Ferreira

Product Owner

Tiago is happiest when he puts on a dinner jacket and joins Orchestras around Wales and England on stage playing the clarinet. When not performing, you’ll most likely find him dancing salsa in Latin parties!

Liz Cochlin

CTO

Liz is at her happiest when pottering around at home with her husband, son, and pets. She loves the buzz of holidays and music festivals, but nothing beats that first diet coke back on the sofa afterwards. Outside of work, you’ll find her stretching out in a yoga class, getting lost in a good book, or whizzing around Cardiff Bay on roller skates (gracefulness optional).”

Matt Elliott

Retrofit Co-ordinator

Ollie Hanson

Project Co-ordinator

Ollie’s happy place is anywhere he can move, whether that’s hitting the gym, going for a run, or scaling a bouldering wall just for fun. When he needs some downtime, you’ll find him watching films or gaming. When he’s not chasing endorphins or epic storylines, Ollie’s dreaming of adventure in Canada’s wild landscapes.

Andrew Wong

Senior Software Engineer

Andrew enjoys spending quality time with his family, engaging in the sport of basketball, and pursuing his intellectual curiosity by delving into the fields of technology and science.

John Lloyd

Technical Lead: Energy Services

Caffè della Seggiovia in Sauze d’Oulx. John’s favourite bar in his favourite village, tucked away in the Italian Alps. Where they bring you free home cooked Italian food & snacks while you have a few drinks, invariably under bright blue skies surrounded by the snowy mountains.

Matt Burton

CFO

Matt loves a BBQ, especially on a warm sunny day with a cold beer. Walking his two dogs or watching his sons play rugby is often where you will find him on the weekends. Matt’s other passion is of course Disney & Lego.

Rabz Jabbar

Commercial Development Co-ordinator

Rabz is found happiest when she’s at her favorite place – the Cotswolds (Bourton-on-the-Water), soaking up the landscape and charming views of the stone village. Rabz will often go there in attempt to paint the scenery – albeit failing quite badly, her defense – art is subjective!

James Williams

Co-founder and Chief Executive Officer

James is happiest when exploring the Welsh forestry, pure escapism, get as far away from civilisation as possible and be surrounded by the amazing natural environment we have. Usually accompanied by small people carrying sticks.

Dan Murray

System Engineer

Dans favourite place is anywhere with his partner, whether that’s chilling watching Netflix or out having adventures and travelling together.

Katie Wiliams

Creative Lead

Katie loves nothing better than trekking up the Sugar Loaf mountain with the family to indulge in the breathtaking views of the Monmouthshire valley… (also nothing to do with the vineyard conveniently placed at the foot of the mountain!)

Chris Burton

Lead Software Engineer

Chris is happiest at home, usually deep into a new TV series or tinkering with the latest bit of tech, especially if it makes music. He’s a big fan of good food, cold beer, and catching live music whenever he can.

Abbie Morgan

Billing Operations Lead

Abbie can be found most weekends dancing to a band in one of our local music venues or in a festival field with all her friends doing the same thing. Add in a pint of Guinness and it would be perfection.