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Lab49 is an award winning specialist consultancy that creates bespoke technology in partnership with the most important companies in finance. We were founded to bring Silicon Valley solutions to Wall Street's door.

Since then, we have worked on successive waves of technological change, including distributed computing, high‑speed automation, enterprise UX and digital distribution (for which Lab49 was among the first significant practices established on Wall Street), DevOps, cloud and data science. Today, we are an established partner in financial markets, having delivered hundreds of projects for clients including all the world's tier‑one investment banks and many of the largest buy‑side firms globally. Being part of Lab49 means bringing your drive and creativity into an environment where your contributions will make immediate impact.

Engineers work in cross‑functional teams, consulting directly with our clients, shaping not only technical solutions to business problems but delivering them into production. We are seeking a Senior UI Developer, working with our clients in the high frequency trading space.

Your close collaboration with both our existing team and our client's team is essential to both make progress against an existing backlog of work for a custom trading UI, but also manage the ecosystem of UI products in our client's tech environment.

You will report to the Interactive Practice Head and help drive the direction of UI engineering across Lab49.

• Act as a hands‑on engineer and architect and support work across the UI & Mobile Engineering Practice, from small initiatives all the way up to the design and build of complex systems.
• Lead and participate in projects directly, serving as a role model for project teams and working with all other practices to ensure a successful project outcome.
• Lead engineers and stakeholders to ensure appropriate progress and results; must be commercial in approach.
• Develop strong relationships with clients as a strategic partner and technical advisor, helping expand the footprint and secure follow‑on work.
• Partner with and support the business development team to create and deliver compelling pitches that help define the problem, captivate the client, present a solution, and work out the engagement terms.
• Build and reinforce a professional network through active engagement in industry events and public speaking opportunities.
• Provide thought leadership for the UI & Mobile Engineering Practice and actively encourage learning and development.
• Help drive the ongoing effort to find, attract, interview, and hire top software engineering talent.
• People management, including coaching, mentoring, and performance management of employees (may be included in this role).

Office presence in central Mexico City (M. Juarez) 1 day a week (or more, if required).

• 7+ years of commercial‑grade web / front‑end development experience.
• Strong experience in modern JavaScript, ideally TypeScript, building web applications with React.
• Solid skills interacting with multiple types of API formats, preferably REST and GraphQL; additional skills with WebSockets are desired.
• Experience contributing to the design process from gathering requirements, planning, and ideating from the start of a project.
• Demonstrated understanding of user behavior and how to tailor web experiences to meet the needs of users.
• Experience working with designers and other partners to collaborate on design & wireframing and delivering high‑quality implementations.
• Experience with Agile development methodologies.
• Strong interpersonal and organizational skills.
• Demonstrable team leadership experience.
• Knowledge of, and strong interest in, global financial markets and financial products is a strong plus.
• Bachelor's or Master's in Computer Science, Engineering, Physics, Math, or related work experience.
• Excellent communication skills.
• Excellent command of written and spoken English.

• Experience working with common financial products such as Bloomberg, Symphony, or other tools commonly used in a finance context such as Excel, Salesforce, Databricks, and others.
• Experience in capital markets, specifically buy‑side investment management.

Lab49 is an established partner for most financial institutions on Wall Street. You will gain exposure into a variety of environments, business domains, technologies, and people. Your ability to bring drive and creativity to the role will be the key component to success at Lab49.

The broad and intense exposure to a variety of challenges accelerates your career growth, and Lab49's structure is designed to enable you to learn and grow as an engineer and consultant.