RethinkFirst · 3 months ago
Senior Full Stack Engineer - Architecture Team
Chicago, IL
Full-time
Onsite
Senior Level, Lead/Staff
8+ years expRethink First is a leading behavioral health technology company focused on making mental wellness accessible and scalable. They are seeking a Senior Full Stack Engineer to join their Architecture Team, responsible for shaping technical direction, mentoring developers, and ensuring systems are scalable, secure, and reliable.
Clinical TrialsHealth CareHealth Diagnostics
Responsibilities
Contribute to architectural design, ensuring alignment with scalability, performance, security, and compliance standards
Develop, design, test, and deploy cloud-based applications using C#, .NET Core, SQL, Azure, and Angular
Establish and enforce coding standards, design patterns (SOLID, DDD, CQRS, etc.), and development methodologies (Agile, CI/CD, DevOps)
Write, review, and maintain high-quality code with strong emphasis on unit testing (XUnit/NUnit), integration testing, and automated pipelines
Mentor and coach engineers across teams, promoting continuous learning and knowledge sharing
Collaborate with cross-functional stakeholders to translate requirements into technical designs and solutions
Drive adoption of best practices in DevOps, microservices, containerization (Docker), messaging (Service Bus), caching (Redis), and observability (App Insights, logging, monitoring)
Participate in architectural reviews, code reviews, and design discussions
Contribute to long-term platform strategy, modernization, and cloud migration initiatives
Troubleshoot production issues and guide root cause analysis to ensure system reliability
Qualification
Required
Bachelor's degree in Computer Science, Engineering, or related field (or equivalent experience)
8+ years of professional software development experience, with at least 3+ years in a senior or lead role
Proven experience designing and implementing enterprise-scale applications on the Microsoft stack (C#, .NET Core/Framework, Entity Framework, SQL Server, Azure)
Strong expertise in object-oriented design, design patterns, SOLID principles, domain-driven design, and event-driven design
Experience with C#, Angular, TypeScript, HTML, CSS, JavaScript and Python
Strong SQL skills including query optimization, schema design, and stored procedures
Cloud-native development in Microsoft Azure: App Services, Functions, Service Bus, Storage, Key Vault, Azure SQL, and monitoring tools
Familiarity with microservices architecture, RESTful APIs, and event-driven systems
Hands-on experience with CI/CD pipelines, Azure DevOps, Git, Docker, and Infrastructure as Code (Terraform/ARM)
Experience implementing unit testing frameworks (XUnit, NUnit, Moq), automated testing, and test-driven development (TDD/BDD)
Knowledge of healthcare domain standards (HIPAA, HITRUST, SOC2) is a strong plus
Demonstrated ability to mentor and grow engineering talent, fostering collaboration and knowledge sharing
Excellent problem-solving, communication, and leadership skills
Strong adaptability in a fast-paced, evolving environment
A passion for innovation, continuous learning, and delivering high-quality products
Preferred
Candidates with experience designing, developing, or integrating AI-driven systems will have an advantage
Building or integrating AI agentic systems for automation, decision-making, or intelligent workflows
Leveraging large language models (LLMs), vector databases, or machine learning frameworks
Designing scalable APIs, MCPs and microservices that support AI/ML workloads
Applying ethical AI practices, data governance, and secure handling of sensitive information
Collaborating with data scientists and product teams to translate AI research into production-ready solutions
Benefits
Generous health, dental, & vision benefits package
Flexible paid time off
11 paid company holidays
401k + matching
Parental leave
Access to our award-winning RethinkCare platform supporting neurodiversity in the workplace through parental success, professional resilience, and personal wellbeing.
Company
RethinkFirst
RethinkFirst is a provider of Analysis-based treatment tools for the growing population affected by autism spectrum disorders.
201-500 employees
H1B Sponsorship
RethinkFirst 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 (1)
2020 (3)
Funding
Current Stage
Growth StageTotal Funding
$12.41M2020-08-11Private Equity
2014-08-18Series C· $10M
2011-04-01Series B
Leadership Team
Ben Semmes
Chief Executive Officer
Eric Larsson
Chief Financial Officer
Recent News
2025-10-07
2025-09-10
Company data provided by crunchbase