KellyMitchell Group · 3 hours ago
Client Test Engineer
California, United States
Contract
Onsite
Senior Level
$60/hr - $80/hr
7+ years expKellyMitchell Group is seeking a Senior Software Engineer to join their team. The role involves leading software development initiatives, designing and maintaining Ruby on Rails applications, and collaborating with cross-functional teams to deliver robust technical solutions.
Human ResourcesInformation TechnologyStaffing Agency
Responsibilities
Lead and contribute to software development initiatives from architectural design through implementation, testing, deployment, and ongoing optimization
Design, build, and maintain scalable, high-quality Ruby on Rails applications and supporting services
Troubleshoot, diagnose, and resolve complex technical issues across the full application stack
Collaborate closely with product managers, designers, and QA engineers to translate requirements into robust technical solutions
Write clean, efficient, well-documented, and testable code aligned with industry best practices
Conduct thorough code reviews, set engineering standards, and mentor junior and mid-level engineers
Integrate and maintain third-party APIs and external services as required
Champion software engineering best practices, including CI/CD pipelines, automated testing, performance optimization, and DevOps workflows
Contribute to architectural discussions and technical decision-making to ensure long-term maintainability and scalability
Qualification
Required
Bachelor's degree in a STEM field
7+ years of professional software engineering experience, with senior-level, hands-on development in Ruby on Rails
5+ years of experience developing modern front-end applications using React or comparable JavaScript frameworks
Deep understanding of Ruby fundamentals, Rails conventions, and modern Rails architecture patterns
Extensive experience working across the SDLC using tools such as Jira, Confluence, GitHub, GitLab, or similar
Experience with web performance and scalability technologies such as Redis, AWS CloudFront, ElastiCache, Batcache, or similar caching/CDN solutions
Strong knowledge of software design patterns, object-oriented principles, and best practices for maintainable systems
Hands-on experience with cloud platforms (AWS preferred) and modern deployment approaches, including Docker and containerized environments
Excellent analytical and problem-solving skills, with strong attention to detail
Strong communication and collaboration skills, with the ability to influence technical decisions across teams
Experience implementing DevOps practices, CI/CD pipelines, and infrastructure automation
Prior experience building systems with high availability, security, and compliance requirements
Proven track record of delivering scalable, highly available N-tier architectures
Solid understanding of Agile and traditional SDLC methodologies such as: Scrum, Kanban, Waterfall and XP
Experience working in large, complex technology organizations
Strong organizational, prioritization, facilitation, and decision-making skills
Ability to adapt quickly to shifting priorities in a fast-paced environment
High degree of ownership, initiative, and comfort operating with limited supervision
Willingness and ability to learn new technologies, tools, and processes as needed
Benefits
Medical, Dental, & Vision Insurance Plans
Employee-Owned Profit Sharing (ESOP)
401K offered
Company
KellyMitchell Group
KellyMitchell is a HR firm for IT and technical staffing for organizations globally.
1001-5000 employees
H1B Sponsorship
KellyMitchell Group has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (2)
2021 (2)
2020 (2)
Funding
Current Stage
Late StageLeadership Team
Cassandra Sanford
CEO and Owner
Gina Chisholm
Vice President - Business Operations
Company data provided by crunchbase