Sr. Engineer - Mobile

Posted 14 Hours Ago
Be an Early Applicant
Hiring Remotely in Brazil
Remote or Hybrid
Senior level
Big Data • Marketing Tech • Sales • Software • Analytics • Big Data Analytics
PureSpectrum makes it easy for researchers to find and source survey takers with speed and confidence.
The Role
Design, develop, test, and maintain mobile applications for iOS and Android. Work with APIs, optimize databases, and lead team performance.
Summary Generated by Built In

Who We Are:

PureSpectrum is a rapidly growing market research and insights platform that simplifies technology, allowing researchers to gather and activate consumer data without disruption. As the go-to solution for high-quality multi-sourcing and fully automated research, PureSpectrum is helping to shape the future of insights. 

Our Marketplace facilitates over 65 million online interviews annually, and our proprietary respondent-level scoring system—PureScore—continues to set the industry standard for data quality and reliability.

Recognized globally for both innovation and culture, PureSpectrum has been named one of Newsweek’s Global Most Loved Workplaces (2023–2025), included in Inc.’s Best Workplaces (2024-2025), certified as a Great Place to Work (2022–2025), and featured on Built In’s Best Places to Work list (2023–2025). PS is rapidly becoming the leading solution for quality multi-sourcing and end-to-end automated research solution.


The Opportunity:

PureSpectrum is seeking an Sr. Engineer  to join our high-impact Product & Engineering team of passionate engineers. You will be responsible for designing, developing, testing, and maintaining a mobile application. This is a fast-paced role within our global Product & Engineering organization, reporting directly to the Engineering Manager.

The ideal candidate is technically strong, detail-oriented, and thrives in a collaborative, agile environment. You’ll work closely with cross-functional stakeholders—including product managers, QA engineers, and developers across geographies—to deliver scalable, reliable, and innovative solutions.


Your Responsibilities:

  • Build modern, performant mobile applications for iOS and Android using Flutter.
  • Implement client-side data consumption and display for new features utilizing RESTful API endpoints using .NET core.
  • Test drive development and write Unit/Integration tests
  • Design and optimize database structure using MySQL and write optimized queries for better performance.
  • Follow best practices in version control (Git), CI/CD and cloud deployments.
  • Drive team performance by leading and empowering members to develop and execute innovative solutions.

Qualifications:

  • Bachelor's degree in Computer Engineering, Computer Science or a similar discipline from any recognized University.
  • 3-5 years of hands-on experience with mobile development technologies, ideally Flutter/Dart.
  • Experience with Firebase.
  • Experience of building back-end applications using .NET Core and ORM like Entity Framework (or other Object-Oriented language/ORM).
  • Experience with MVC and MVVM design patterns.
  • Knowledge of C#, Dart, JSON, Git, HTML, YAML, REST.
  • Knowledge of Linux and command line.
  • AWS Cloud Expertise: Proven experience designing, deploying, and maintaining scalable and reliable cloud solutions leveraging core AWS services, including EC2/Beanstalk, RDS, SQS, SES, SNS, S3 and Lambda.
  • Strong understanding of relational databases, preference to MySQL)
  • Knowledge of build pipelines (e.g., AWS CodePipeline, Bitbucket, GitLab)
  • Excellent communication and collaboration skills

Nice to Have

  • Experience in Agile/Scrum teams
  • Comfort with fast-moving teams
  • Comfort with working across time zones and with distributed teams
  • Knowledge of Shell script, JavaScript, and Native mobile development for Android/iOS is a plus.

PureSpectrum Perks:

Join PureSpectrum and become part of our innovative culture (PSX), where we prioritize your professional growth and foster a strong sense of team connection. You'll be part of a rewarding, high-standard environment where team members genuinely enjoy regular celebrations and events—a truly exceptional experience at every level.



PureSpectrum is an equal opportunity em



Top Skills

.Net Core
AWS
C#
Dart
Firebase
Flutter
Git
HTML
JSON
MySQL
Rest
Yaml

What the Team is Saying

Leann
Lynn
Andrew
Estephanie
Michele
Nicole
Karan
Blake
Sushma
Sarah
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The Company
HQ: Westlake Village, CA
283 Employees
Year Founded: 2016

What We Do

Built on the ethos of making researchers’ jobs easier, PureSpectrum offers a research marketplace with global supportOur customers are always at the forefront of our minds as we push the industry’s data quality standards forward. Proud to be awarded MR Supplier of the Year in 2021, PureSpectrum continues to provide industry-leading data quality. PureSpectrum developed PureScore™ which monitors survey takers' long-term behavior on our platform and blocks poor respondents from participating, ensuring high-quality data for our clients.

PureSpectrum is a simple yet innovative research experience from project inception to final reporting. Our sample Marketplace Platform gives researchers the ability to quickly access the highest quality respondents. With PureSpectrum, you get the best of everything: agile research with high-quality data you can trust.

On the PureSpectrum Marketplace, researchers are empowered to run projects at whatever cadence their research demands. Our users have the power to access one of the largest consumer datasets available and only pay for the research they need.

In the few years since its inception, PureSpectrum has been named one of the Fastest Growing Companies in North America on Deloitte’s Fast 500 since 2020 and ranked for four years in a row on the GRIT Top 50 Most Innovative List and the Inc. 5000 lists.

Why Work With Us

PureSpectrum has created an environment where every employee feels seen, heard, and cared for. We encourage “candor with kindness” across all departments and empower our employees at every level with opportunities for professional growth.

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PureSpectrum Offices

Hybrid Workspace

Employees engage in a combination of remote and on-site work.

Our flex-hybrid workplace policy allows employees to find a balance between in-office and remote work with 3 days a week in the office at their discretion.

Typical time on-site: 3 days a week
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HQWestlake Village, CA
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