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Senior Ruby on Rails Lead Engineer

Job in Portsmouth, Rockingham County, New Hampshire, 00215, USA
Listing for: Capgemini
Full Time position
Listed on 2026-10-18
Job specializations:
  • Software Development
    Backend Developer, Ruby on Rails, Senior Developer
Salary/Wage Range or Industry Benchmark: 31.78 - 49.66 USD Hourly USD 31.78 49.66 HOUR
Job Description & How to Apply Below
Senior Ruby on Rails Lead Engineer (Contract)

Portsmouth, NH, United States (On-site)

Contract (7 months 29 days)

Published 2 days ago

Containers & Orchestration

Dev Ops & CI/CD

Terraform Cloud

API Security & Authentication

splunk

We are seeking an experienced Senior Ruby on Rails Lead Engineer with software development experience to design, develop, and maintain scalable web applications. The ideal candidate will provide technical leadership, drive architecture and design decisions, mentor team members, and deliver high-quality solutions.

Key Responsibilities:

Design, develop, and maintain web applications using Ruby on Rails.

Build and support RESTful APIs and integrations with internal and external systems.

Lead architecture and system design discussions for scalable, secure, and high-performing applications.

Optimize application performance, database design, and code quality.

Collaborate with cross-functional teams in an Agile environment.

Conduct code reviews, mentor developers, and promote engineering best practices.

Support CI/CD processes, AWS cloud deployments, and production issue resolution.

Monitor and troubleshoot applications using logging and monitoring tools.

Required Skills:

Software development experience with strong expertise in Ruby on Rails.

Extensive experience in API development, microservices, and system integrations.

Strong knowledge of PostgreSQL, MS SQL Server, Redis, and Sidekiq.

Experience with AWS, Cloud Foundry, Docker, and CI/CD pipelines.

Strong understanding of System Design, Architecture Patterns, OOP, Design Patterns, and SOLID principles.

Proficiency with Git, RSpec, automated testing, and Agile methodologies.

Experience with application monitoring and log analysis using Splunk.

Preferred

Skills:

Experience leading development teams and mentoring engineers.

Exposure to Ruby on Rails, AWS cloud, Kubernetes, Kafka, GraphQL, and Terraform, Open Sesrch, Elastic Search.

Knowledge of application security, OAuth2, JWT, and cloud-native architectures.

The pay range that the employer in good faith reasonably expects to pay for this position is $31.78/hour - $49.66/hour. Our benefits include medical, dental, vision and retirement benefits. Applications will be accepted on an ongoing basis.

Tundra Technical Solutions is among North America’s leading providers of Staffing and Consulting Services. Our success and our clients’ success are built on a foundation of service excellence. We are an equal opportunity employer, and we do not discriminate on the basis of race, religion, color, national origin, sex, sexual orientation, age, veteran status, disability, genetic information, or other applicable legally protected characteristic.

Qualified applicants with arrest or conviction records will be considered for employment in accordance with applicable law, including the Los Angeles County Fair Chance Ordinance for Employers and the California Fair Chance Act. Unincorporated LA County workers: we reasonably believe that criminal history may have a direct, adverse and negative relationship with the following job duties, potentially resulting in the withdrawal of a conditional offer of employment: client provided property, including hardware (both of which may include data) entrusted to you from theft, loss or damage;

return all portable client computer hardware in your possession (including the data contained therein) upon completion of the assignment, and; maintain the confidentiality of client proprietary, confidential, or non-public information. In addition, job duties require access to secure and protected client information technology systems and related data security obligations.

Position Requirements
10+ Years work experience
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