Ion
Ion12mo ago
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Senior Web UI Developer (React), Mexico City

Mexico CityFull-time (hybrid)senior
EngineeringFrontend Developer
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Quick Summary

Overview

Lab49 is an award winning specialist consultancy that creates bespoke technology in partnership with the most important companies in finance. We were founded in 2002 to bring Silicon Valley solutions to Wall Street’s door.

Technical Tools
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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 in 2002 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 to 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 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 us to expand our 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 (scope, structure, deliverables) terms. 
  • Build and reinforce your professional network through active engagement in industry events, public speaking opportunities, etc.  
  • 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, but additional skills with Websockets would be desired. 
  • Contribute to the design process from gathering requirements, planning and ideating from the start of a project. 
  • Demonstrate an understanding of user behavior and how to tailor web experiences to meet the needs of users. 
  • Work with designers and other partners to collaborate on design & wireframing and take responsibility for delivering high-quality implementations. 
  • Experience with Agile development methodologies. 
  • Strong interpersonal and organizational skills. 
  • Demonstrable team leadership experience. 
  • Knowledge of, and strong demonstrated interest in, global financial markets and financial products is a strong plus. 
  • Bachelors or Masters 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.
  • Location & Eligibility

    Where is the job
    Mexico City
    Hybrid — some on-site time required
    Who can apply
    Same as job location

    Listing Details

    Posted
    April 22, 2025
    First seen
    May 7, 2026
    Last seen
    May 8, 2026

    Posting Health

    Days active
    0
    Repost count
    0
    Trust Level
    24%
    Scored at
    May 7, 2026

    Signal breakdown

    freshnesssource trustcontent trustemployer trust
    Ion
    Ion
    lever
    Employees
    5
    Founded
    2025
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    IonSenior Web UI Developer (React), Mexico City