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Senior Software Engineer in Test, Core Platform Team
Now hiring

Senior Software Engineer in Test, Core Platform Team

About Toptal

Toptal is a global network of top freelance talent in business, design, and technology that enables companies to scale their teams, on-demand. With $200+ million in annual revenue and over 40% year-over-year growth, Toptal is the world’s largest fully remote company.

We take the best elements of virtual teams and combine them with a support structure that encourages innovation, social interaction, and fun. We see no borders, move at a fast pace, and are never afraid to break the mold.

Position Description

Toptal is a quality-first company. While quality is the responsibility of the whole team, our Software Engineers in Test lead this effort. We believe that top quality can only be reached by attending it through three different angles:

Product knowledge - completely understanding the product and its functionalities.

  • Engineering domain - increasing the test coverage or solving their gaps as well as understanding its architecture and design and being able to find opportunities of improvement or possible issues.
  • Process audit - identifying quality issues that can be prevented with simple changes in our software development process.

The Core Platform team develops and maintains features that are cross to and used by both Client and Talent squads with overlapping needs. We handle core functionality such as verticals, skills, staff management, platform permissions and staff referrals, so we assist many teams and have many different stakeholders within the company.

Most of the tools we develop use the Ruby on Rails framework, but we also handle others using ReactJS, NodeJS, TypeScript and Javascript. You will need to love and welcome learning different technologies and be able to switch context between the applications and technologies we support every few weeks based upon the defined priorities.

As a Senior Software Engineer in Test, your work will be focused on both maintaining and improving the high-level test coverage of our tools as well as assisting the team in analyzing the complex technical initiatives by finding corner cases that should be handled correctly and ensuring all of them meet the high-quality standards of Toptal.

Core Platform is a new team, with a new domain, so expect a lot of research and understanding to happen in the first few months. We’ll be working on scope definition for the team as well as the first development initiatives. You’ll be able to bring all your knowledge and experience with processes to help create the foundations for this team.

This is a remote position that can be done from anywhere. Due to the remote nature of this role, we are unable to provide visa sponsorship. Resumes and communication must be submitted in English.


You will participate in definition, test and validation of first-class software web applications serving our internal Core Team. These features will be used by many different squads inside the Company and provide support to our core operations.

Among other responsibilities:

  • Work to maintain and improve our automated test suites in RSpec and Jest, as well as to setup from scratch automated test suites for new products or tools.
  • Create detailed, comprehensive and well-structured test plans and test cases.
  • Estimate, prioritize, plan and coordinate testing activities.
  • Identify, record, document thoroughly and track bugs.
  • Review the work of your colleagues from the white box (PR reviews) and black box (manual and exploratory) testing perspectives.
  • Continuously improve your team’s processes, brainstorm ideas, and communicate your status and progress.
  • Work closely with the stakeholders, and users from the preliminary planning through to having a holistic view to plan and deliver new features.
  • Contribute to the writing of Acceptance Criteria and Definition of Done for the team’s features.
  • Review requirements, specifications and technical design documents to provide timely and meaningful feedback, as well as to identify corner cases that should be addressed properly.
  • Track quality assurance metrics, like defect densities and open defect counts.
  • Stay up-to-date with new testing tools and test strategies.
  • Development experience including design, implementation, documentation, and maintenance of test automation in Ruby on Rails and NodeJS.
  • Mentor other people, provide feedback, and grow as a part of the team.
  • Actively participate in meetings including Scrum meetings, squad meetings, pair programming sessions, etc.

In the first week, expect to:

  • Begin your onboarding and integration into Toptal.
  • Get familiar with our product portfolio and team structure.
  • Learn our processes
  • Get acquainted with our tech stack.

In the first month, expect to:

  • Implement your first automated tests.
  • Have strong knowledge of Toptal’s business.
  • Start working on regular team tasks and become familiar with the business domain.
  • Attend regular meetings, like technical calls, retrospectives, and the monthly Engineering All-hands meeting.

In the first three months, expect to:

  • Start contributing to the technical topics as well, understand the application, and the general testing system.
  • Learn and take part in the utilization of the latest testing technologies.
  • Deliver value in regular cadence.
  • Get comfortable with the daily work routine of our team.
  • Review code written by your colleagues.
  • Be ready to propose improvements to Toptal’s processes and codebase.

In the first six months, expect to:

  • Develop automated tests to ensure that our products flawlessly support our business and behave at sky-high quality standards.
  • Setup the automated test suite from scratch for our new products and tools.
  • Be actively engaged in the development of new features your team works on.

In the first year, expect to:

  • Become a champion of new ideas that will thrive to achieve the purpose of our company while ensuring the quality culture that we value the most.
  • Become a key part of the team, be responsible for the QA and overall testing activities, and help others inside and outside of the team.
  • Develop your team’s trust to make strategic decisions in regard to tools or methods involved in the QA process.
  • Significantly increase the automated test coverage of our team’s products including some end-to-end tests, when necessary, help out the team with manual and exploratory testing.
  • Have a detailed understanding of Toptal’s technical stack, collaboration rituals, processes, performance, and future work.
  • Determine what your career path looks like at Toptal.


  • Have 5+ years of Quality Assurance and test automation.
  • RSpec, Cucumber and Jest are our daily bread and butter.
  • Being a team player - avoiding solo performances, helping others.
  • Great spoken and written communication skills.
  • Familiarity with Cypress, Ruby on Rails, JavaScript/TypeScript and GraphQL.
  • Full autonomy in every aspect of daily work - be able to unblock yourself by finding the right people or help.
  • Hands-on experience with both white box and black box testing.
  • Have a solid QA automation experience, being primarily focused on adding end-to-end tests in both monolithic and distributed systems.
  • Have a solid hands-on experience with automated testing tools for both front and backend applications.
  • Hands-on experience with different tools - Testing tools, Version Control systems (Git), Test Management Software, Bug Tracking software (Jira), CI tools (Jenkins, Github Actions, etc.), Docker and Kubernetes (a plus).
  • Critical thinking and enthusiastic skepticism.
  • Bonus points for hands-on experience testing Slack bots and Jira add ons.
  • You must be a world-class individual contributor to thrive at Toptal. You will not be here just to tell other people what to do.
For Toptal Use Only: #LI-REMOTE #LI-EZ1 #individualcontributorEurope #individualcontributorSA

Who You Will Work With

Ismael Peinado

Ismael Peinado

Chief Technology Officer

As Toptal's Chief Technology Officer, Ismael leads the company's engineering organization, driving process and culture to ensure top quality delivery from our team of world-class engineers. Ismael was formerly the CEO and Co-Founder of Blue4, a distributed media system used in the aerospace and entertainment industries. He leverages over twenty years’ experience in providing commercial, operational, and technical leadership for B2B, B2C, and government organizations from early-stage startup to large-high growth market leaders. Ismael has a BE and BS in Industrial Engineering from the Universidad de Málaga.

Sotirios Michalakos

Sotirios Michalakos

Director of Engineering

As Toptal's Director of Engineering, Sotiris is responsible for building, leading, and coaching engineering teams, empowering Toptal's world-class engineers to thrive in their working environment in order to ensure impactful delivery. He started his career as a software engineer and quickly moved up to leading startups as a CTO, specializing in the digital distributed economy. Sotiris brings 10 year of hands-on experience in building freelance talent marketplaces and talent management systems, a new breed of SaaS platforms which allows SMBs and enterprises to efficiently manage, work with, and pay their distributed teams. Sotiris earned a BS in Management Science & Technology from the Athens University of Economics and Business and an Msc in Information Networking from Carnegie Mellon University.

View the Whole Team

Working at Toptal

We're changing the way the world works. Toptal is not only a place to progress your career and design your own lifestyle, but also a company where you'll learn how to develop innovations that push business and technology forward.
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Working at Toptal has been the best experience of my career. Every day I'm surrounded by intelligent, thoughtful, and hard-working colleagues that push me to be better.

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