Senior Fullstack Engineer

Toptal; Poland; Remote; PLN 357,000 - 555,000; Full time

Job summary

Toptal is seeking a senior full-stack engineer with a frontend focus to join the Billing Team. You will work across React and Ruby on Rails, building scalable features and integrating front-end with backend services. Proficiency in TypeScript and GraphQL will be essential in delivering fast, reliable user experiences.

This is a remote position. We value initiative, collaboration, and the ability to mentor others while delivering high-quality software in a dynamic, fast-growing environment.

Qualifications

• 5+ years of web development experience.
• Proficient in React and TypeScript, capable of integrating front-end components with back-end systems.
• Hands-on experience with Ruby on Rails.
• Demonstrable understanding of back-end and development principles, databases, clean code, and best testing practices.
• Proactive and adaptable, able to lead projects and work effectively within cross-functional teams.
• Strong communication skills and ability to work in a fast-paced environment.

Responsibilities

• Write elegant, efficient, and testable React and Ruby code that is easy to maintain and debug.
• Integrate front-end components with React frontend.
• Develop and maintain Ruby on Rails APIs to support communication between frontend and backend.
• Write tests and perform manual testing; review colleagues’ work.
• Lead initiatives, mentor teammates, and contribute to process improvements.

Skills

React

TypeScript

Ruby on Rails

Web development

Testing practices

Tools

GraphQL

Job description

About Toptal

Toptal is a global network of top talent in business, design, and technology that enables companies to scale their teams, on-demand. With $200+ million in annual revenue

About Toptal

Toptal is a global network of top talent in business, design, and technology that enables companies to scale their teams, on-demand. With $200+ million in annual revenue and team members based around the globe, Toptal is the world’s largest fully remote workforce.

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.

Job Summary

The Billing Team is dedicated to building, maintaining, and evolving the technological backbone and functionality that underpin Toptal’s financial operations across all business areas. We’re looking for a full-stack engineer with a front-end focus who is comfortable working across the front-end and back-end, and who is keen to lead initiatives and work closely with our Product team.

By joining the team, you’ll have the opportunity to work on multiple applications, mainly in React front-end and Ruby on Rails back-end. We love TypeScript and Ruby, and heavily use GraphQL for communication between our front-end SPA apps and their back-ends. At Toptal, we push the boundaries of what’s possible every single day, and we’d love for you to be a part of it.

We strive to build performant, scalable, and well-organized apps that are aligned with business goals and non-functional requirements. This is a remote position. We do not offer visa sponsorship or assistance. Resumes and communication must be submitted in English.

Responsibilities

The following information is intended to describe the general nature and level of work being performed. It is not intended to be an exhaustive list of all duties, responsibilities, or required skills.

• Write elegant, efficient, and testable React and Ruby code that is easy to maintain and debug.
• Write, update, and integrate your features with React front-end components.
• Implement and maintain Ruby on Rails APIs to support seamless communication between front-end and back-end systems.
• Cover code with tests and perform manual testing of features, while reviewing the work of colleagues.
• As a true teammate, continuously improve the team’s processes, brainstorm ideas, and communicate statuses and progress.
• Mentor other people, provide feedback, and grow as a part of the team.
• Learn new concepts and technologies.

In the first week, expect to:

• Be introduced to Toptal’s practices and processes.
• Start participating in company-wide training sessions.
• Set up your local environment and get familiar with our tech stack.
• Create your first pull request.

In the first month, expect to:

• Familiarize yourself with the team’s business domain.
• Contribute to our product development.
• Develop a deeper understanding of our technology, processes, and product pipeline.

In the first three months, expect to:

• Actively supply software planning, development, and maintenance.
• Suggest and implement improvements to Toptal’s processes and codebase, while exercising discretion and independent judgment.

In the first six months, expect to:

• Lead technical initiatives in our team.
• Drive improvements to the codebase and processes.
• Take part in the on-call rotation.

In the first year, expect to:

• Have a detailed understanding of Toptal’s technical stack, collaboration rituals, processes, and performance.
• Mentor Toptal’s new team members.

Qualifications and Job Requirements

• 5+ years of web development experience.
• Proficient in React and TypeScript, capable of integrating front-end components with back-end systems.
• Have hands-on experience with Ruby on Rails.
• Have a demonstrable understanding of back-end and development principles, databases, clean code, and best testing practices.
• Proactive and adaptable, able to lead projects and work effectively within cross-functional teams.
• Consider multiple quality dimensions like user impact, failure tolerance, code maintenance, implementation time, availability, security breaches, and performance.
• Tackle complex problems but also consider multiple solutions, weigh them, and decide on the best course of action.
• Be genuinely interested in technology and love to try new things.
• Strong communication skills, capable of clearly explaining complex concepts.
• Ability to work in a fast-paced, rapidly growing company and handle a wide variety of challenges, deadlines, and a diverse array of contacts.
• 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: #easterneurope #southamerica