Lead Full-Stack Ruby Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Lead Full-Stack Ruby Engineer based in Brazil.
As a Lead Full-Stack Ruby Engineer, you will contribute to the development of a next-generation data management and quality platform designed to streamline clinical trial data integration, standardization, and management. You will combine hands-on engineering expertise with technical leadership, helping build and maintain reliable, scalable systems using Ruby on Rails, React, and microservices architecture. Working closely with cross-functional teams and client stakeholders, you will influence architectural decisions and help solve complex engineering challenges. Your work will support improved data quality, more efficient clinical review processes, reduced operational risk, and ultimately better patient safety. This fully remote, B2B contract opportunity offers an environment where engineers are trusted to take ownership, collaborate proactively, and contribute to meaningful product and technical decisions.
Accountabilities
Full-Stack Development: Design, develop, and maintain software applications using Ruby on Rails and React, ensuring high-quality implementation across the stack.
Microservices Engineering: Build, support, and troubleshoot microservice-based systems, understanding how individual services interact within the broader platform.
Data Flow and Integration: Trace data across services, message queues, event streams, third-party integrations, and analytical data warehouses to identify issues and ensure reliable information exchange.
Technical Ownership: Take responsibility beyond individual tickets by understanding the wider system architecture, identifying dependencies, and considering how neighboring services affect overall functionality.
Troubleshooting and Problem-Solving: Investigate cross-service issues, identify root causes, and keep work progressing when dependencies or blockers arise.
Technical Decision-Making: Contribute to architectural and engineering discussions, raise potential risks and gaps early, and recommend practical solutions.
Cross-Functional Collaboration: Work closely with client teams and other engineers in an embedded, long-term delivery environment, helping shape product direction and technical outcomes.
Continuous Improvement: Identify opportunities to improve system reliability, observability, service boundaries, and engineering workflows as the platform evolves.
Requirements
Professional Experience: At least 8 years of relevant professional experience, with strong commercial expertise in full-stack software engineering.
Ruby on Rails: Extensive hands-on experience developing and maintaining applications using Ruby and the Rails framework.
React: Strong commercial experience building and maintaining front-end applications with React.
Microservices Architecture: Practical experience building, maintaining, and troubleshooting microservice-based systems.
Systems Thinking: Ability to understand end-to-end data flows and dependencies across services, message queues, event streams, third-party integrations, and data warehouses.
Ownership and Initiative: A proactive approach to engineering, with the ability to investigate problems independently, recognize dependencies, and take responsibility for outcomes beyond assigned tasks.
Adaptability: Comfort working in a fast-paced environment, managing multiple tickets, reprioritizing work when necessary, and maintaining progress despite blockers.
Communication: Ability to ask thoughtful questions, communicate technical risks clearly, and collaborate effectively with engineers and stakeholders.
English Proficiency: Upper-intermediate English or higher.
Additional Advantages: Experience with Kafka or other event-streaming technologies such as RabbitMQ, SQS/SNS, or Pub/Sub; Snowflake or comparable analytical data warehouses such as BigQuery or Redshift; large-scale third-party API integration and debugging; observability tools for distributed tracing and centralized logging; or service decomposition and monolith-to-microservices migrations.
Benefits
Work Model: Fully remote, with the flexibility to work from the location that suits you best within the engagement arrangements.
Contract Type: B2B contract.
Working Hours: 9:00 a.m. to 5:00 p.m. Brazil Time (BRT).
Flexible Time Off: A flexible policy allowing up to 40 unpaid days off per year; time away from work is encouraged.
Professional Growth: Opportunities to develop your career in a growing organization and take on increasing technical responsibility.
Technical Influence: Work with clients who value engineering input and involve engineers in architectural, technical, and product decisions.
Meaningful Project: Contribute to a clinical trial data platform focused on improving data quality, reducing operational burdens, and supporting patient safety.
Collaborative Culture: Participate in an environment that values diversity, inclusion, social engagement, and charitable initiatives.
Benefits Exclusions: Paid time off, national holidays, medical insurance, and similar benefits are not included in the B2B compensation arrangement. Contractors are responsible for arranging their own benefits.
How Jobgether Works
We use an AI-powered matching process to ensure your application is reviewed quickly, objectively, and fairly against the role's core requirements. Our system identifies the top-fitting candidates, and this shortlist is then shared directly with the hiring company. The final decision and next steps (interviews, assessments) are managed by their internal team.
We appreciate your interest and wish you the best!
Why Apply Through Jobgether?
Data Privacy Notice: By submitting your application, you acknowledge that Jobgether will process your personal data to evaluate your candidacy and share relevant information with the hiring employer. This processing is based on legitimate interest and pre-contractual measures under applicable data protection laws (including GDPR). You may exercise your rights (access, rectification, erasure, objection) at any time.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.

Work arrangement
Yes