Senior Front-End Developer (Beeswax/AdTech)

Argentina Brazil Colombia Latin America Mexico JavaScript Software Developer

Required skills

JavaScript / expert
TypeScript / strong
React / strong
English / strong

Are you an experienced professional with understanding of the front-end of a web-application? Do you know how to solve business problems and take responsibility for the result? Our friendly and smart team is waiting for you! 


Our customer is Beeswax (, a rapidly growing US AdTech company. Founded by three former Google specialists, it has a highly technical team and an excellent technological culture. 

Beeswax provides extremely high-scale Bidder-as-a-Service solutions in advertising technology, works with global businesses, and has raised $28M (including the most recent Series B raise of $15M) to date. 

Sigma Software works together with Beeswax to provide numerous key components of the platform. It is looking for engineers to complement the Beeswax engineering team and drive further development of the platform. 


The project is about providing a REST API to customers and a JavaScript UI. So, your job will be focused on creating a maintainable API based on a very complex data model and creating a highly usable UI/UX. This role will require demonstrating a high level of responsibility and flexibility, as well as a “get-it-done” attitude. 


  • 4+ years of software engineering experience 
  • Excellent knowledge of JavaScript/ TypeScript, ReactJS and the related ecosystem 
  • Strong knowledge of algorithms and data structures 
  • Strong estimation skills, ability to come up with solutions, pros and cons 
  • Experience with designing, implementing, and shipping rich front-end applications 
  • Knowledge of functional programming concepts and other programming paradigms 
  • Passion for delivering elegant technical solutions that not only meet Client and Product expectations, but are also based on clear, concise code that is easy to maintain and test 
  • Openness to working and collaborating in a multidisciplinary team 
  • Engage in discussion with engineers to reach the best possible solution for our technical challenges 
  • Proactive, inquisitive, always looking for a challenge and want to constantly grow as a Professional and to grow others around you
  • At least Upper-Intermediate level of English


  • Work on a JS application built on top of the API that client’s customers use to configure our systems 
  • Work with our tech stack and toolset, which includes but is not limited to: React, Typescript, Jest, Enzyme, Cypress, Easy-Peasy (Redux, ModX), React Storybook, AWS, GitHub, CI, and TDD practices 
  • Drive major architectural changes like scaling to improve engineering velocity (moving from Backbone to React) 
  • Collaborate with engineers, product managers, UX/ design teams and data scientists to evolve services to provide new experiences for the customers and meet ever-growing scale 
  • Guide and mentor other engineers on architecture and process 
  • Work with colleagues and stakeholders as part of the full product development life cycle, gaining deep knowledge of our platform, and particular areas of our clients’ business to help you contribute as part of an agile team 


  • Diversity of Domains & Businesses
  • Variety of technology
  • Health & Legal support
  • Active professional community
  • Continuous education and growing
  • Flexible schedule
  • Remote work
  • Outstanding offices (if you choose it)
  • Sports and community activities


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