Tjark Mehl

Why this persona fits the audience

A Berlin software engineer who trades ES/NQ futures and EUR/USD CFDs in the evenings, imports fills into Edgewonk, and keeps chart snapshots in a local folder.

• Age: 34
• Location: Berlin, Germany
• Occupation: Senior software engineer
• Income: €95k salary + side trading
• Education: MSc in computer science
• Company size: 100+ employees
• Years in role: 6

“The market is just another complex system. If you can understand the inputs and the rules, you can find the patterns.”

Tjark Mehl grew up in a quiet suburb of Hamburg, the son of an accountant and a librarian. From an early age, he displayed a keen interest in how things worked, often taking apart electronics to understand their inner mechanisms. This curiosity naturally led him to computer science, where he excelled, earning a Master's degree from a reputable German university. His academic rigor and innate analytical skills made him a sought-after candidate for software engineering roles. He moved to Berlin after graduation, drawn by the city's vibrant tech scene and relatively affordable cost of living. He landed a position as a software engineer, quickly progressing to a senior role due to his problem-solving abilities and dedication. His income from his engineering job provides a stable financial foundation, but Tjark is driven by more than just salary. He views trading, particularly futures and CFDs, as a logical extension of his analytical mindset – a complex system to be understood and optimized. He started trading a few years ago, initially with small amounts, but his methodical approach and desire for efficiency led him to seek better ways to track his performance. He adopted Edgewonk as his primary journal, appreciating its structured approach to performance analysis, and uses Python scripts to automate data import and custom analysis. He meticulously saves chart snapshots in a local folder, creating a personal archive of market behavior. Tjark values his privacy immensely, preferring to keep his trading activities separate from his professional life and personal social media. He sees his trading not as a get-rich-quick scheme, but as a long-term intellectual challenge and a way to further hone his analytical and decision-making skills. His recent focus has been on refining his Python automation for trade logging and exploring more sophisticated risk management models, aiming to reduce manual intervention and emotional influence in his trading decisions.

Background & daily life

A day in their life

Tjark's weekday begins around 7:30 AM. After a quick breakfast and checking overnight market news, he commutes to his office in Berlin. His workday, from 9 AM to 5:30 PM, involves coding, debugging, and attending stand-ups and occasional team meetings. He prefers focused work blocks, often using noise-canceling headphones. After work, he cycles home, has dinner with his girlfriend, and then dedicates 2-3 hours to his trading. This involves reviewing his Edgewonk journal, analyzing charts from the day's ES/NQ or EUR/USD sessions, manually logging any missed fills, and sometimes running Python scripts to test new indicators or data processing routines. He might spend an hour on Reddit or financial news before winding down around 11 PM.

Lifestyle

Tjark lives in a shared 2-bedroom apartment in Kreuzberg, Berlin, with his girlfriend, who works as a freelance graphic designer. He prioritizes his personal time, often dedicating evenings to his trading activities after a full day of software engineering. He enjoys the quiet solitude of his routine, which includes meticulous data analysis and strategy refinement. His cycling hobby is more about efficient transport and clearing his head than social sport. He's not overly concerned with material possessions, preferring to invest in tools that enhance his skills and efficiency, whether for work or trading. Financial discipline is key, with a focus on long-term growth rather than speculative splurges.

Work life

As a senior software engineer at a mid-sized tech firm, Tjark's days are filled with coding, code reviews, and architectural discussions. He works on backend systems, often dealing with large datasets and performance optimization. He collaborates with a team of about ten engineers, preferring asynchronous communication via Slack and Jira tickets over frequent meetings. The pressure comes from tight deadlines and the constant need to adapt to new technologies. He finds satisfaction in solving complex problems and building robust, efficient systems, but often feels his analytical skills are underutilized in day-to-day tasks, which fuels his drive for more intellectually stimulating pursuits outside of work.

Relationships

Tjark maintains a close relationship with his girlfriend, who understands and respects his need for focused personal time. His social circle is small but loyal, consisting of a few university friends he meets with occasionally. He doesn't seek external validation for his trading or career, preferring to rely on his own judgment and data.

How they decide

Tjark is highly analytical and research-driven. He meticulously gathers data, evaluates options based on logic and evidence, and often runs simulations or tests before committing to a course of action. He is cautious and prefers to understand the underlying mechanics of any system before making a decision, avoiding impulsive choices.

How they sound

Speaks with a measured, precise tone. Avoids hyperbole and emotional language. Uses technical jargon naturally when discussing work or trading. His German is fluent and standard, with occasional English technical terms. He tends to pause to formulate his thoughts before speaking, especially when explaining complex ideas. He is direct but not confrontational.