Senior Developer

1 Month ago • 5 Years +

Job Summary

Job Description

The Senior React + Power Automate Developer will support AT&T's internal SharePoint platforms. This role requires building front-end components with React.js and automating workflows using Power Automate within the Microsoft ecosystem. Responsibilities include developing React.js components, designing and implementing Power Automate workflows, integrating flows with various platforms, managing flow reliability, and collaborating with cross-functional teams. The ideal candidate will have strong skills in React.js, JavaScript/TypeScript, Power Automate, and SharePoint integration.
Must have:
  • 5+ years of front-end and workflow automation experience
  • Strong skills in React.js, JavaScript/TypeScript, and SharePoint
  • Advanced knowledge of Power Automate (Microsoft Flow)
  • Strong communication skills for global team collaboration
Good to have:
  • Exposure to Azure Functions and Python scripting
  • Understanding of SharePoint architecture and permissions
  • Experience with Agile tools such as Azure DevOps or JIRA
  • Awareness of manual deployment workflows and platform limitations
Perks:
  • Maternity and parental leave extra days
  • Competitive benefits packages
  • Vacation, compassionate leave, sick days, and flex days
  • Access to online services for families and new parents
  • Diversity and Inclusion Board with 12 affinity groups
  • Internal learning and development programs
  • Enterprise-wide employee discounts

Job Details

We are seeking a Senior React + Power Automate Developer to support AT&T's internal SharePoint platforms. This dual-skilled role focuses on developing front-end components in React.js and building workflow automation using Power Automate within the Microsoft ecosystem.

This position requires a problem-solver with strong experience in workflow design, SharePoint integration, and client collaboration.


You will

  • Build and maintain React.js front-end components in SharePoint Online (SPFx)
  • Design and implement Power Automate workflows involving multi-step logic, approvals, and error
  • handling
  • Integrate Power Automate flows with SharePoint, Teams, Outlook, and external APIs
  • Manage flow reliability, environment constraints, and compliance boundaries
  • Collaborate with cross-functional teams in Kanban/Scrum models
  • Document processes and participate in QA and deployment activities

 

You have

  • Advanced English level (At least B2+)
  • 5+ years of combined front-end and workflow automation experience
  • Strong skills in React.js, JavaScript/TypeScript, and SharePoint integration
  • Advanced knowledge of Power Automate (Microsoft Flow)
  • Familiarity with REST APIs, environment management, and flow optimization
  • Strong communication skills and ability to work with globally distributed teams
  • Exposure to Azure Functions and Python scripting
  • Understanding of SharePoint architecture and permissions
  • Experience with Agile tools such as Azure DevOps or JIRA
  • Awareness of manual deployment workflows and platform limitations

 

What We Offer:

  • Maternity and parental leave extra days
  • Competitive benefits packages
  • Vacation, compassionate leave, sick days, and flex days
  • Access to online services for families and new parents
  • Diversity and Inclusion Board with 12 affinity groups
  • Internal learning and development programs
  • Enterprise-wide employee discounts
  • And more…

At Critical Mass, we value our employees and offer competitive compensation and benefits packages.  If you’re looking for a challenging and rewarding opportunity to make a significant impact on the lives of our employees, we encourage you to apply for this exciting position today!

The Talent Team at Critical Mass is focused on ensuring we provide the best training, onboarding, and employee experience possible! Our new hires & employees are the future of our organization, and we want to set you up for long-term success. In an effort to do so, we expect our team to work from an office a minimum of 3 days a week.

Critical Mass is an equal opportunity employer. 

The Critical Mass Talent Acquisition team will only communicate from email addresses that use the URLs criticalmass.com and us.greenhouse-mail.io. We will not use apps such as Facebook Messenger, WhatsApp, or Google Hangouts for communicating with you. We will never ask you to send us money, technology, or anything else to work for our company. If you believe you are the victim of a scam, please review your local government consumer protections guidance and reach out to them directly.

If U.S. based: https://www.consumer.ftc.gov/articles/job-scams#avoid
If Canada based: https://www.canada.ca/en/services/finance/consumer-affairs.html
If U.K. based: https://www.gov.uk/consumer-protection-rights
If Costa Rica based: https://www.consumo.go.cr/educacion_consumidor/consejos_practicos.aspx 

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About The Company

Critical Mass is a team of 1,800 inspired folks based in 12 offices around the world, providing full-service digital capabilities for the greatest brands on Earth. Our secret sauce is our uncompromising design standards, our relentless focus on customers, and an ability to put powerful new technologies to work for our clients.


We work with the best—Apple, Nike, Mars Wrigley, Nissan, Diageo, Airbnb, BMW, BNY Mellon, Johnson & Johnson, and many more—brands who strive for connected digital ecosystems and unparalleled experiences. We help them get there by gaining deep insight into their consumers and orchestrating data, AI, design, media, and tech stacks around human stories.


We’re a global agency founded in Canada, but digital is our home. If you know us, then you know we’re a special, quirky place that attracts big talent and tiny egos. (We actually give out a “so f-n nice” award—lots of them). But just because we’re friendly doesn’t mean we’re not a force to be reckoned with. We’re driven. Relentless. And we live our values. We’re Critical Mass, but our friends call us CM. Please call us CM!

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