Sporting knee-length hair tied into a bun with a colourful scarf and married to a flame juggler, Jessica James isn’t your typical quant trader. A Christ Church PhD Physics alum and now Managing Director at Commerzbank, James speaks with levity and self-assuredness, a rare duality in the finance sector. 

While many from my cohort are making the jump from physics to finance, it was more than unconventional for James in ‘94: “It was absolutely weird of me to do so. I was trying to write up my thesis and thinking I was unemployable, and my supervisor, Patrick Sanders, came into the office.” He had received this “funny letter”, anticipating James’ potential interest. It was from the First National Bank of Chicago, who were moving into the area of financial derivatives and looking for PhD Maths or Physics students. She was called onto the trading floor to explain her research to various traders and salespeople, before being flown to Chicago for another interview. “Business class!”, she whispers in mock awe. 

Physics and finance may share certain mathematical foundations, but there are clear differences between the two worlds. “Physics is about studying the foundations of the universe. Finance is about studying a man-made system that doesn’t always behave how you think it will. I’ve always enjoyed it. It’s fun. It’s fast-moving.”

Ambiguity in jargon is another key difference. When somebody in science uses the term force, its meaning is generally agreed upon. When someone talks about yield or convexity in finance, they could be defined in very different ways, depending on the context and the speaker. “The big change is the lack of precision of the vocabulary. It’s easy to think you understand something in finance, but when terms are ill-defined, you might not. Physics is mostly a zero-bullshit zone”, she says.

“Finance tends to focus on the future and the now, and data is, fundamentally, historical. Yet it’s a gold mine – especially today, when sophisticated analysis is increasingly used to uncover trends and behaviours – however, it’s often deleted, forgotten, or ignored.”  It’s always a red flag when someone says “but this time it’s different”, be it an ex-partner or a teetotal friend, James explains that this is particularly true in finance. “It’s like the climate”, she tells me. “The climate can fluctuate in unexpected ways, and so can the market, right? Just because there hasn’t been an ice age recently doesn’t mean they won’t return in their time.”

While at school, James was the only one doing Physics and Chemistry: “15 years in a convent school put me off God forever. But I understand why science and religion are often so conflated”, she says, explaining that she views both as trying to better understand the rules of the universe. As the sole woman in many rooms, including a weekend away as the Managing Director at Citibank, James has never minded being the odd one out: “I don’t care if they think I’m different. I was smarter than most of them.” I fully believe her. “It is tricky being a woman in finance. How many technical disciplines are there where you could say that women are equal? And, you shouldn’t have to be tough and immune to remarks that shouldn’t be made. But, it never really bothered me.”

While traditional routes into banking are competitive, James stresses the importance of getting into the right place and avoiding a mundane job. Her advice? Get in early via the internship-turned-graduate-scheme pathway. “Oxford and Physics give you the ability to think critically and believe in your own opinion and your own knowledge”, she says. “This helped me to thoughtfully reflect on challenges and gave me the courage to recognise that if something felt off, it probably was – and it didn’t mean I lacked ability.” This mindset has been the cornerstone of James’ career.

“But, the one thing that is the hardest, but the most important, is to understand where you fit into the organisation.” She tells me that when fixing code, processing data, or completing spreadsheets, we should be asking: why? Where is your organisation making money, and why does your job exist? It’s important to not be stuck in a bubble, James stresses, not just in finance but in any job. This understanding will push you to find originality in the way that you work, and perhaps do it better than other organisations: “Knowledge is power, and often the knowledge that is the most powerful in an organisation is who does what and why.” She believes in keeping a foot in more than one world, and, thereby, tapping into more opportunities.

“I had never seen five o’clock from the front before, only from behind.” The crazy hours in finance aren’t a recent development, although James prioritised her hours off work just as much as those she spent on the trading floor. Her secret was to not break stride and make no eye contact with anybody as she got off work. She quickly realised that “you’ve got to set boundaries, you’ve got to set limits”.

James has been a pioneer in finding probability-weighted foreign exchange market trading strategies. She has launched products based on trading signals, which she explained as buying the trading rules that came from looking at historical data. Amidst the global turmoil of the 2008 financial crisis, these instruments performed better than many others. 

She also coined the term rollercoaster bonds: long-term bonds that become highly sensitive to changes in interest rates, similar to the way rollercoasters must consider forces other than velocity and acceleration. Here, rising interest rates can significantly impact the value of century (100-year) bonds, like some sold by Oxford University. While century bonds sound reliable and safe, she showed they would lose much of their value if interest rates rose out of the near-zero range of the pre-COVID world – and they did.

Penning several financial maths texts is yet another achievement of James’ career. She is quick to warn, however, against getting her confused with an author of the same name who writes, apparently, racy novels as opposed to those about the stock market. 

Talking to James, it is clear that she enjoys devoting her time to finance and academia. After all, she is a pension trustee at Citibank and Commerzbank, on the Institute of Physics council and a Visiting Professor at Oxford and University College London. However, reflecting on her time as an Oxford undergraduate, she reminisces on her fun side. She recalls her first encounter with Professor Kurti: a pioneer in the art of gastronomy. He was about to give a lecture at Manchester University titled The Joy of Cooking, but was startled to realise as he entered the lecture theatre that someone had amended the title on the chalk board to The Joy of Sex. James bumped into him years later in the Clarendon laboratory and confessed, luckily being met with laughter. 

She notes the same Brasenose dinner between exams and results as one of her favourite memories of Oxford, where “everything was possible. Nobody’s wave function had collapsed”. Her message to students? Love every minute of Oxford for how fantastic it is. But also: “Take pride in yourself. Take pride in your accomplishments. You got here, you stuck it [out]. Not many people can do that.” 

Oxford Royale Academy and Oxford Summer Courses have been ranked among Europe’s fastest-growing companies, according to the 2026 Financial Times’ FT Top 1000: Europe’s Fastest-Growing Companies. The annual ranking, which is compiled in partnership with Statista, lists the companies with the highest compound annual growth rate between 2021 and 2024. Oxford Summer Courses came in at 151st place, closely followed by Oxford Royale, which ranked 156th, securing them places in the top 16% of the fastest-growing companies on the continent, alongside companies like Bio&Me, Moneybox, Popeyes, and Healf.

Founded in 2010 by Oxford graduates Robert Phipps and Harry Horton, Oxford Summer Courses offer two-week residential courses for 12- to 18-year-olds, priced just shy of £8,000. The courses on offer range from architecture to creative writing, with small class sizes of up to 15 students advertised.

Oxford Royale Academy was founded by Oxford graduate William Humphreys in 2004, and has since attracted more than 50,000 students to its courses. Initially exclusive to Oxford, the company now offers students insight into a range of universities, including Imperial College London, Cambridge, Yale, and Columbia, and is currently gauging interest for a Dubai programme set to begin in 2027. Charging £6,995 for a two-week Oxford residential programme, Oxford Royale offers students talks from exclusive guest speakers, which have previously included Chancellor William Hague and Professor Brian Cox. The company has also launched an AI education programme this summer, which was developed by MIT’s Responsible AI for Social Empowerment and Education (RAISE) initiative. The two-week residential course is based in Oxford, costing £9,995.

In October 2025, Oxford Royale Academy featured as one of FT’s Europe’s Long-Term Growth Champions, recognising its sustained revenue growth between 2014 and 2024.

The summer course company was previously taken to court by the University of Oxford in a ‘name battle’ in 2023. The University asserted that it had suffered substantial damage because of the word ‘Oxford’ in the company’s title and was seeking a High Court injunction which would have forced Oxford Royale to change its name.

Both companies market their programmes in part on the promise of an admissions advantage. Oxford Royale’s website tells prospective students its courses offer “a clear advantage for university applications”, while Oxford Summer Courses presents its certificate and letter of recommendation as evidence that will support future applications. The University makes no reference to external summer schools in their guidance for strong applications. The University has previously stated, regarding Varsity Education, that it does not “endorse any commercial operations or publications offering advice or training on our admissions process, nor do we guarantee the accuracy of any such company’s information”.

Candidates standing in next week’s University of Oxford Council elections have warned of growing financial pressures, rising workloads, governance challenges, and the impact of AI on admissions and assessment. Council is the University’s executive governing body with responsibilities for its administration, finance, property, academic policy, and strategic direction.

Electoral statements published in the Oxford Gazette, the University’s internal newspaper, on 21st May highlighted concerns that mounting financial and administrative pressures have made it increasingly difficult for academics and professional services staff to sustain teaching, research, and governance responsibilities.

Dr Chris Ballinger, a fellow at Exeter College and candidate for University Council, warned of “financial stress” caused by “rising costs, economic turbulence and a squeeze on both research funding and undergraduate fee income”. He also argued that Oxford must continue to make progress on “pay and conditions, and on workload”. Ballinger also pointed to the growing challenge posed by AI in higher education, writing that “the benefits of AI are tempered by its impact on evaluating prospective students and assessing those we admit”.

Other candidates focused more directly on governance and institutional structures. Professor Martin Castell, Professor of Materials and another Council candidate, described the “ever-increasing demands” placed on academics, professional services staff, and students, arguing that governance and administrative systems should be “proportionate, efficient, and designed with workloads in mind”.

Boyd Rodger, a candidate from the Nuffield Department of Population Health, criticised what he described as a lack of constructive institutional dialogue. In his statement, Rodger argued that Congregation, Oxford’s sovereign governing body, has recently only been convened “to debate and vote on adversarial motions”, calling instead for a more “inclusive” and “consultative” approach to institutional change.

Similar concerns emerged in elections to humanities faculty boards. Professor Sam Wolfe, standing for election to the Board of the Faculty of Linguistics, Philology and Phonetics (LPP), wrote that “it has been a challenging time for the faculty”, adding that “the humanities are vulnerable nationally and internationally”. Wolfe also highlighted “workload pressures” and advocated reform of academic career structures and stronger support for Early Career Researchers.

Professor E. Matthew Husband, another candidate for the LPP Faculty Board, referred to “interconnected challenges around governance, space, staffing, and teaching”, as well as “structural tensions” between “local, divisional, and central university priorities”.

The concerns raised by candidates come amid continuing financial pressures across the UK higher education sector, with universities facing rising costs, funding constraints, and growing debate over the role of generative AI in teaching and assessment.

The University declined to comment, as “inquiries relate to ongoing elections, which the University is respecting”.