Senior tech lead (python / java / aws)
Lab49 is an NYC-based award-winning specialist consultancy that creates bespoke technology in partnership with the world's leading financial institutions. Founded in 2002 to bring Silicon Valley engineering practices to Wall Street, we've delivered hundreds of high-impact projects across global investment banks and buyside firms, spanning distributed systems, high performance automation, enterprise UX, cloud, and data driven platforms.
At Lab49, engineers work directly with clients to design and deliver production systems. We combine technology, design, and business to solve real problems where quality, performance, and clarity matter.
Lab49 is seeking a Tech Lead to spearhead the full stack technical implementation of digital products for our clients in the finance industry, guiding engineers and collaborating with designers and product teams to translate interactive design concepts into scalable, production-ready applications. You will report to the global head of UI engineering.
As a Tech Lead, you are a true project leader. This is a hands on leadership role: you will design systems, write code when it matters most, guide architectural decisions, and ensure the team delivers high quality outcomes even when you are not at the keyboard.
This is a hybrid role with 1-3 days per week at the office in central Mexico City (Insurgentes Sur).
Lead the design and delivery of modern, production grade web applications using contemporary UI technologies and frameworks.
Architect solutions that balance user experience, performance, scalability, and delivery constraints.
Set technical direction and standards, ensuring consistency, quality, and long term maintainability across the system.
Actively manage software quality, testing strategy, and delivery velocity, even when you're not directly writing code.
Lead and mentor engineers across one or more workstreams, helping them grow technically and professionally.
Serve as a role model for how to think, communicate, and act as a senior consultant and engineer.
Your teams consistently deliver high quality software that meets user and client objectives.
You can step back from the keyboard when needed without delivery or quality suffering.
10+ years of experience designing and building complex, commercial grade software systems.
~5+ years leading Agile teams or acting in a technical leadership role.
~ Deep expertise in Java Script/Type Script and React (7+ years of experience)
~ Strong understanding of end-to-end web application architecture, APIs, data flow, and performance considerations.
~ Solid grasp of SDLC practices, CI/CD, automated testing strategies, and quality management.
~ Strong written and verbal English skills (C1+ is a must)
~ Backend engineering experience with. NET (preferred), Java, or Python.
Experience with cloud platforms such as Azure (preferred) or AWS
Experience working with financial products, platforms, or data intensive systems.
You'll gain broad exposure to technologies, business domains, and client environments as you grow your career.
If you care about quality, enjoy helping others succeed, and want your work to have real impact, Lab49 is a place where you can thrive.
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