We are a dedicated recruitment partner for battery technology — focused on the embedded, software, data and leadership talent that makes batteries safer, smarter and longer-lasting. This is all we do.
Embedded BMS engineers, battery algorithm specialists and the leaders who direct them are scarce and hard to assess if you do not speak the language. We do. Because battery is the only sector we recruit in — through a software, data and leadership lens — we know where the talent sits and can tell a genuine specialist from someone who has simply worked near one.
We recruit the disciplines we know best, applied to the battery domain — from embedded firmware up to the analytics and leadership layer.
Embedded software and firmware engineers writing the battery management control logic that keeps cells balanced, safe and performing in the field.
Data scientists, ML and algorithm engineers building the state-of-health, state-of-charge and life-prediction models that turn cycling data into insight.
Data engineers and architects building the pipelines and platforms that move battery telemetry from the pack to the models reliably and at scale.
Backend, full-stack, platform and cloud/DevOps engineers building the battery analytics products and the infrastructure they run on.
BI specialists who turn battery data into clarity, and security engineers who protect connected battery platforms and the data they hold.
CTOs, CDOs, CISOs and VP/Head of Engineering, Data and Security who set the roadmap and build high-performing battery teams.
We recruit using the titles the battery market actually uses — the specialism comes from the domain, not a bolt-on label.
They understood the BMS firmware role better than agencies we had used for years. The shortlist was small, relevant and fast.
Honest, technical conversations from the first call. They put me forward for roles that actually fit, not just whatever was open.
We built our first battery data team with their help. They got the hiring sequence right and kept every candidate engaged.
Let’s start building your winning team – contact us now to begin.
Whether you need to fill a hard battery software or data vacancy, or want to sharpen your brief before going to market, we can help.
We partner with battery developers, OEMs, BMS specialists and energy-storage businesses to fill the software, data and leadership roles that decide whether a product ships.
Battery is a small, fast-moving world. The best embedded and algorithm engineers are rarely on job boards, and a generalist agency cannot tell a genuine specialist from someone who has merely worked nearby. Because battery is all we do, we already know the market — and the people in it.
Years building relationships with battery software, firmware and data professionals across the UK and EU means we reach passive talent quickly.
We understand state estimation, BMS firmware and battery analytics well enough to screen for real depth, so you only meet people who can do the work.
No competing sectors and no noise. Every conversation we have is in the battery market, which keeps our knowledge and shortlist current.
A structured search with consistent communication and a live feedback loop, so strong candidates stay engaged and offers do not fall apart.
Let’s start building your winning team – contact us now to begin.
Tell us about the brief and we will tell you exactly how we would find them.
If you write firmware, build models, engineer data platforms or lead teams in the battery world, we will help you find the right move — not just the next one.
We work across the battery software and data stack, from hands-on specialists to technical leadership. Typical roles include:
Honest conversations, genuine technical understanding and no spray-and-pray. We only put you forward for roles that fit your skills and what you actually want next, and we keep you informed at every stage.
If you are looking for your next mid, senior or leadership-level move and want to work with forward thinking businesses please get in touch.
A clear, structured battery search that keeps scarce specialists engaged and clients informed from brief to offer.
We learn your platform, roadmap and team before we approach a single battery specialist.
We tap a deep, battery-specific network — not job boards — and engage people who genuinely fit.
We screen for real depth, so you only meet specialists who can do the work, not just describe it.
We manage offer, notice and onboarding so your battery hire fits and stays from day one.
"If you want to go fast, go alone. If you want to go far, go together."
Let’s start building your winning team – contact us now to begin.
Whether you are hiring or looking for your next role, we would love to hear from you.
Before your role goes live, or after it has stalled, make sure your hiring campaign is set up to succeed.
Most recruitment campaigns fail before they start. We find out why, and we tell you what to do about it.
Most campaigns do not fail because the right person does not exist. They fail because the salary, the brief or the process was not ready for the market — and nobody said so out loud. By the time it shows up in the results, weeks have been lost along with strong candidates.
The Diagnostic finds these problems just as effectively after a campaign has stalled as it does before one goes live.
A two-day engagement, fixed at £1,500, giving you a structured, expert review of your recruitment approach — built on more than two decades of specialist recruitment experience in data, technology and leadership. It includes:
An evidence-based analysis across ten key areas — salary and benefits, job description, advert and messaging, sourcing channels, active versus passive strategy, talent pool realism, candidate journey, interviews and assessment, outcomes and metrics, and employer story — delivered with a red/amber/green scorecard and the market data behind every rating.
A practical roadmap showing where, when and how to advertise your role, so your campaign reaches the right people and stays visible instead of peaking on day one.
Specific, practical actions you can take this week to improve reach, sharpen messaging and lift the quality of applications — tailored to your role and market.
A structured conversation to walk through the findings, answer your questions and agree what happens next. You leave with a plan, not a document to file.
There is no obligation to use Xist4 for the search itself. The Diagnostic stands alone.
A proven five-step process: Discover, Benchmark, Assess, Advise, Deliver. You begin with a short discovery questionnaire and a consultation call so we understand your goals, the role, the challenges you have faced and what success looks like.
The Diagnostic costs £1,500 and takes two days. A stalled campaign running eight to twelve weeks rarely costs less than £15,000 in management time, advertising and delayed productivity — before counting the role sitting empty throughout. Whether you are planning to recruit soon or trying to rescue a search that has stalled, get in touch and we will talk it through.
Before your role goes live, make sure your hiring campaign is set up to attract the right candidates. Book the Diagnostic for practical, expert recommendations before you go to market.
We are a focused recruitment partner for the battery industry, connecting employers with the embedded, software, data and leadership talent that builds better batteries.
Xist4 is a specialist recruitment business working exclusively in the battery domain — battery management systems, battery analytics and the software and data platforms around them. We deliberately do not spread across every sector. That focus is what lets us understand the technology, know the market, and reach specialists a generalist agency cannot.
Good hiring is not about filling a seat. It is about finding someone who raises the bar, fits the team and stays. We take a human, structured approach to every search and treat candidates and clients with the same honesty.
Battery is the only sector we recruit in, through a software, data and leadership lens.
We understand BMS firmware, state estimation and battery analytics well enough to screen for real depth.
Clear communication, fair process and no spray-and-pray. People first, always.
Deep networks across the UK and EU battery market built over years, not bought from a database.
Let’s start building your winning team – contact us now to begin.
Whether you are hiring or exploring your next move, we would love to talk.
Notes from the battery talent market — hiring trends, role demand and advice for clients and candidates.
Why the same job title spans firmware, controls and building management — and how to write a brief that reaches the right people.
State-estimation talent is scarce. A look at where it sits, what it costs and how to compete for it.
The first five hires that set the technical foundation for an early-stage battery business.
How Xist4 collects, uses and protects your personal data.
This privacy policy sets out how Xist4 uses and protects any information that you give Xist4 when you use this website.
This is the privacy notice of Xist4 IT Limited. In this document, "we", "our", or "us" refer to Xist4 IT Limited. We are company number 03898383 registered in England & Wales. Our registered office is at Xist4 IT Ltd, 14 Bramley Drive, Backwell, Bristol BS48 3HN.
This is a notice to inform you of our policy about all information that we record about you. It sets out the conditions under which we may process any information that we collect from you, or that you provide to us. It covers information that could identify you ("personal information") and information that could not. In the context of the law and this notice, "process" means collect, store, transfer, use or otherwise act on information.
We take seriously the protection of your privacy and confidentiality. We understand that all visitors to our website are entitled to know that their personal data will not be used for any purpose unintended by them, and will not accidentally fall into the hands of a third party. We undertake to preserve the confidentiality of all information you provide to us, and hope that you reciprocate.
Our policy complies with UK law accordingly implemented, including that required by the EU General Data Protection Regulation (GDPR). Except as set out below, we do not share, or sell, or disclose to a third party, any information collected through our website.
The law requires us to determine under which of six defined bases we process different categories of your personal information, and to notify you of the basis for each category. If a basis on which we process your personal information is no longer relevant then we shall immediately stop processing your data.
When you create an account on our website, buy a product or service from us, or otherwise agree to our terms and conditions, a contract is formed between you and us. In order to carry out our obligations under that contract we must process the information you give us. Some of this information may be personal information. We may use it in order to:
We process this information on the basis there is a contract between us, or that you have requested we use the information before we enter into a legal contract. We shall continue to process this information until the contract between us ends or is terminated by either party under the terms of the contract.
Through certain actions when otherwise there is no contractual relationship between us, such as when you browse our website or ask us to provide you more information about our business, including job opportunities and our products and services, you provide your consent to us to process information that may be personal information. Wherever possible, we aim to obtain your explicit consent to process this information.
You may withdraw your consent at any time by instructing us at business@xist4.com. However, if you do so, you may not be able to use our website or our services further.
We may process information on the basis there is a legitimate interest, either to you or to us, of doing so. For example, we may process your data on this basis for the purposes of record-keeping for the proper and necessary administration of our business; responding to unsolicited communication from you to which we believe you would expect a response; protecting and asserting the legal rights of any party; and protecting your interests where we believe we have a duty to do so.
We are subject to the law like everyone else. Sometimes, we must process your information in order to comply with a statutory obligation. For example, we may be required to give information to legal authorities if they so request or if they have the proper authorisation such as a search warrant or court order.
If you send us information in connection with a job application, we may keep it for up to three years in case we decide to contact you at a later date. If we employ you, we collect information about you and your work from time to time throughout the period of your employment. This information will be used only for purposes directly relevant to your employment. After your employment has ended, we will keep your file for six years before destroying or deleting it.
When you contact us, whether by telephone, through our website or by e-mail, we collect the data you have given to us in order to reply with the information you need. We keep personally identifiable information associated with your message, such as your name and email address, so as to be able to track our communications with you to provide a high quality service.
Cookies are small text files that are placed on your computer’s hard drive by your web browser when you visit any website. Our website uses cookies. They are placed by software that operates on our servers, and by software operated by third parties whose services we use. If you choose to prevent their use through your browser settings, you will not be able to use all the functionality of our website. We use cookies to track how you use our website, to record whether you have seen specific messages we display, to keep you signed in, and to record your answers to surveys while you complete them.
Requests by your web browser to our servers for web pages and other content on our website are recorded. We record information such as your geographical location, your Internet service provider and your IP address. We use this information in aggregate to assess the popularity of the webpages on our website and how we perform in providing content to you.
Our websites are hosted in the United Kingdom. We may also use outsourced services in countries outside the European Union from time to time in other aspects of our business. Accordingly, data obtained within the UK or any other country could be processed outside the European Union.
At any time you may review or update personally identifiable information that we hold about you. To obtain a copy of any information that is not provided on our website you may send us a request at business@xist4.com. If you wish us to remove personally identifiable information, you may contact us at business@xist4.com. When we receive any request to access, edit or delete personal identifiable information we shall first take reasonable steps to verify your identity before granting access or taking any action.
We do not sell products or provide services for purchase by children, nor do we market to children. If you are under 18, you may use our website only with consent from a parent or guardian.
If you are not happy with our privacy policy or if you have any complaint then you should tell us by email. Our address is business@xist4.com. If you are in any way dissatisfied about how we process your personal information, you have a right to lodge a complaint with the Information Commissioner’s Office at https://ico.org.uk/concerns/.
Except as otherwise mentioned in this privacy notice, we keep your personal information only for as long as required by us to provide you with the services you have requested; to comply with other law, including for the period demanded by our tax authorities; and to support a claim or defence in court.
We may update this privacy notice from time to time as necessary. The terms that apply to you are those posted here on our website on the day you use our website. If you have any question regarding our privacy policy, please contact us.
The terms and conditions governing your use of this website.
Welcome to our website. If you continue to browse and use this website you are agreeing to comply with and be bound by the following terms and conditions of use, which together with our privacy policy govern Xist4’s relationship with you in relation to this website.
The term Xist4 or "us" or "we" refers to the owner of the website whose registered office is Xist4 IT Ltd, 14 Bramley Drive, Backwell, Bristol BS48 3HN. The term "you" refers to the user or viewer of our website.
The content of the pages of this website is for your general information and use only. It is subject to change without notice.
Neither we nor any third parties provide any warranty or guarantee as to the accuracy, timeliness, performance, completeness or suitability of the information and materials found or offered on this website for any particular purpose. You acknowledge that such information and materials may contain inaccuracies or errors and we expressly exclude liability for any such inaccuracies or errors to the fullest extent permitted by law.
Your use of any information or materials on this website is entirely at your own risk, for which we shall not be liable. It shall be your own responsibility to ensure that any products, services or information available through this website meet your specific requirements.
This website contains material which is owned by or licensed to us. This material includes, but is not limited to, the design, layout, look, appearance and graphics. Reproduction is prohibited other than in accordance with the copyright notice, which forms part of these terms and conditions.
All trade marks reproduced in this website which are not the property of, or licensed to, the operator are acknowledged on the website. Unauthorised use of this website may give rise to a claim for damages and/or be a criminal offence.
From time to time this website may also include links to other websites. These links are provided for your convenience to provide further information. They do not signify that we endorse the website(s). We have no responsibility for the content of the linked website(s). You may not create a link to this website from another website or document without Xist4’s prior written consent.
Your use of this website and any dispute arising out of such use of the website is subject to the laws of England, Scotland and Wales.
By Xist4 · 19 June 2026 · 3 min read
Few job titles cause as much confusion in the battery world as "BMS Engineer". The same three letters are used for battery management systems and, in an entirely different industry, building management systems. Search any job board and you will find both mixed together.
For battery employers this matters. A brief that simply says "BMS Engineer" will surface controls engineers, building automation specialists and HVAC professionals alongside the embedded battery talent you actually want. The result is a noisy shortlist and wasted time.
The fix is to be explicit. Reference the technology — cell balancing, state estimation, embedded firmware — the toolchain and the safety standards relevant to battery work. When the brief speaks the language of the role, the right people recognise themselves in it.
We map every battery brief to the titles and signals the market actually responds to, so your search reaches genuine specialists rather than everyone who happens to share an acronym.
By Xist4 · 19 June 2026 · 3 min read
State-of-health and state-of-charge estimation sits at the heart of modern battery analytics, and the people who can do it well are scarce. That scarcity pushes salaries up and makes counter-offers common.
But paying the most is not the only way to win. The strongest battery data scientists are often drawn by the problem itself: real cycling data at scale, a clear path to production, and a team that understands the science.
Employers who articulate the technical challenge clearly, move quickly and keep candidates engaged through the process consistently land talent that better-paying but slower competitors miss.
We help clients position the opportunity, benchmark realistically and run a process tight enough that strong candidates do not drift away.
By Xist4 · 19 June 2026 · 3 min read
Early-stage battery businesses often hire hardware first and treat software as an afterthought. By the time the data is flowing, there is no one to make sense of it.
The first few software and data hires set the technical foundation for everything that follows. Get them right and the platform scales; get them wrong and you rebuild in eighteen months.
A sensible early sequence pairs an embedded or firmware lead with a strong data engineer, then a data scientist once the telemetry is reliable, with technical leadership brought in to hold the architecture together.
We work with founders to plan that sequence and fill it with people who can wear several hats early without losing depth.