Cogman's early years were steeped in the world of books. A voracious reader from a young age, she consumed a wide range of genres, including fantasy, science fiction, and historical fiction. This early exposure to diverse narratives laid the foundation for her own storytelling abilities and instilled a deep appreciation for the power of imagination and world-building, core elements of her later works. Her interest in history, specifically medieval and early modern periods, also began to blossom during this formative time.

Cogman pursued higher education, likely studying relevant fields such as history or literature. This period was crucial in honing her research skills and providing a deeper understanding of the historical contexts that often influence her fiction. Her academic background likely contributed to the meticulous detail and intellectual rigor that characterize her writing, providing a rich and plausible backdrop for her fantastical narratives. The influence of classical literature and mythology are also likely influences from her University Education.

Before achieving widespread literary success, Cogman worked in the field of role-playing game design. This experience proved invaluable, honing her skills in crafting intricate game mechanics, developing compelling characters, and building immersive worlds with clearly defined rules. These skills are readily apparent in her novels, which often feature complex magic systems, strategic maneuvering, and a keen understanding of character motivations within a larger, structured world. Designing for RPGs also emphasized collaborative storytelling and player agency, elements she subtly weaves into her narrative structures.

2014 marked a pivotal moment in Cogman's career with the publication of "The Invisible Library", the first book in her acclaimed series. This debut novel introduced readers to Irene Winters, a professional spy for the Library, tasked with retrieving rare and dangerous books from alternate realities. "The Invisible Library" was met with critical acclaim and quickly garnered a loyal following, establishing Cogman as a fresh and exciting voice in the fantasy genre. The success of this book launched her writing career and set the stage for future installments in the series.

Following the success of "The Invisible Library", Cogman continued to expand the series with seven subsequent novels. Each installment delved deeper into the intricate world of the Library, exploring new alternate realities, introducing intriguing characters, and further developing the complex relationships between Irene, Kai, and Vale. The series became known for its clever blend of fantasy, steampunk, and historical elements, as well as its witty dialogue and fast-paced plot. This period saw Cogman solidify her position as a leading voice in the fantasy genre and expand her readership significantly.

Having completed the initial "Invisible Library" series, Cogman is likely working on new writing projects, potentially exploring different genres or expanding on existing worlds. As a successful author, she continues to engage with her fans through social media and conventions, sharing insights into her writing process and providing updates on her current works. Given her versatility and creative energy, her future contributions to the fantasy genre are highly anticipated.