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Principal Developers at Thoughtworks can wear many hats. Depending on the client situation, you could be playing the role of a technical advisor to senior client executives, guide and direct solution architecture for large technical programs of work or drive technical implementation hand-on with our delivery teams. Principal Developers also provide strategic and tactical leadership on accounts, establishing and maintaining trusted advisor status through high-impact client interactions. By empowering Thoughtworker engagement through cultivating high-performing teams, you will continuously deliver undeniable value to our clients, contributing to the growth and scale of our evolving business. Ultimately, the health of an account is a reflection of the capability and efficiency that you cultivate. Job responsibilities You will champion and adopt best practices like writing clean and reusable code using TDD, pair programming and design patterns You will exemplify Thoughtworks’ technical excellence, thought leadership and capabilities to our clients and inside Thoughtworks You will act as a trusted technical advisor to your client by building key relationships and understanding the market and trends that could impact them You can sense opportunities for improvement and are comfortable proposing and leading systemic change in organizations You will assess client needs and develop the account strategy and proactive proposals needed to deliver value to our client You can speak to the value of our delivery and how it maps to client vision, goals, and initiatives You will continuously deliver undeniable value by ensuring the high performance of Thoughtworks teams on the account and proactively manage risk with the client You will cultivate Thoughtworker growth and development by encouraging feedback and fostering an inclusive, supportive team culture You will ensure security, privacy and legal compliance across the account Job qualifications Technical Skills You bring 18+ years of technical leadership , providing the deep expertise and seasoned expertise necessary to navigate the complexities of large-scale digital transformations Strong engineering background with primary expertise in Java and additional exposure to Python. Candidates are expected to be technically hands-on with the ability to contribute to architecture discussions, code reviews, solution design, and engineering best practices. Proven experience leading and managing large engineering teams and programs, including teams of 70+ members across delivery, engineering, and stakeholder functions. You are an active participant in the broader technical community, leveraging Open Source ecosystems not just as a consumer, but as a strategic contributor who understands the balance between community innovation and enterprise stability. You have a pulse on the AI evolution reshaping our industry. You don't just follow the hype; you critically evaluate how emerging AI tools and methodologies can be harnessed to solve complex problems and drive meaningful efficiency. You possess a good understanding of the Banking domain or enough to have the ability pick up faster, navigating its unique regulatory landscapes and technical complexities with the same precision and care you apply to your code. You have a track record of managing the scope and shape of programs of work You have experience with account management, third party contractual agreements, client management & pre-sales, client reporting and up-selling You are knowledge of delivery approaches such as TDD, continuous integration, pairing and infrastructure automation Professional Skills You have a natural ability to establish and nurture relationships with senior leaders across the organization You have excellent context-switching capabilities You thrive in situations where you are given little to no direction and have the ability to lead, organize and deliver commitments on time and within budget You’re resilient in ambiguous situations and can adapt your role to approach challenges from multiple perspectives. You don’t shy away from risks, instead you take them on and skillfully manage them You’re empathetic and use this ability to build solid working relationships and resolve issues quickly and thoughtfully Other things to know Learning & Development There is no one-size-fits-all career path at Thoughtworks: however you want to develop your career is entirely up to you. But we also balance autonomy with the strength of our cultivation culture. This means your career is supported by interactive tools, numerous development programs and teammates who want to help you grow. We see value in helping each other be our best and that extends to empowering our employees in their career journeys. Onsite Work Expectation You may be expected to work out of our Thoughtworks office or at our client's office location for all five working days of the week, depending on business or clients’ needs. About Thoughtworks Thoughtworks is a global technology consultancy that integrates strategy, design and engineering to drive digital innovation. For 30+ years, our clients have trusted our autonomous teams to build solutions that look past the obvious. Here, computer science grads come together with seasoned technologists, self-taught developers, midlife career changers and more to learn from and challenge each other. Career journeys flourish with the strength of our cultivation culture, which has won numerous awards around the world. Join Thoughtworks and thrive. Together, our extra curiosity, innovation, passion and dedication overcomes ordinary. See here our AI policy.