Company: Cincinnatus LLC
Position: Senior Software Engineer – Backend
Employment Type: Full-Time (W-2 Employment)
Location: United States 🇺🇸
Working Hours: 40 hours per week (Weekdays)
JOB OVERVIEW
Cincinnatus LLC is seeking an experienced Senior Backend Software Engineer to join a high-scale consumer technology platform team supporting digital experiences used by millions of people daily.
The successful candidate will work with Engineering, Product, UX, Business, and Analytics teams to develop and maintain high-performance backend services for web and mobile applications.
The role involves working with Node.js, TypeScript, and Rust, building scalable APIs, integrating AI-powered capabilities, and contributing to the development of secure and reliable technology solutions.
This is a full-time W-2 employment position with Cincinnatus LLC, offering the opportunity to work within the engineering organization of a leading enterprise technology client.
KEY RESPONSIBILITIES
- Lead the development and delivery of software features in collaboration with engineering teams.
- Design, develop, test, and maintain backend services using Node.js, TypeScript, and Rust.
- Build and optimize REST and GraphQL APIs for high-traffic applications.
- Integrate Artificial Intelligence (AI) and Machine Learning (ML) capabilities into production services.
- Participate in system design, code reviews, and implementation of software engineering best practices.
- Monitor system performance, troubleshoot technical issues, and improve service reliability.
- Ensure applications are scalable, secure, efficient, and maintainable.
- Mentor other engineers and contribute to knowledge sharing and team development.
REQUIRED QUALIFICATIONS
Interested candidates should meet the following requirements:
- At least 5 years of professional software engineering experience, OR a Bachelor’s degree in Computer Science or a related field with at least 3 years of relevant experience.
- Proven experience developing production backend applications using Node.js and TypeScript.
- Practical experience working with Rust in production services, performance-critical applications, or substantial systems development.
- Strong understanding of web technologies, including HTTP, cookies, headers, caching, sessions, and server-to-server communication.
- Experience building or maintaining high-traffic, customer-facing web platforms.
- Demonstrated career progression and ability to take ownership of senior-level engineering responsibilities.
- Excellent written and verbal communication skills.
- Ability to commit to at least 40 working hours per week on weekdays.
Additional Advantages:
- Experience with GraphQL on Node.js, including schema design, resolvers, and federation.
- Familiarity with web accessibility standards.
ABOUT CINCINNATUS LLC
Cincinnatus LLC is an enterprise staffing company that partners with leading technology organizations to recruit and employ highly skilled professionals for contract-based and contingent workforce opportunities.
The company serves as the employer of record, providing W-2 employment, payroll, benefits, and compliance services while placing employees directly within client engineering teams.
EQUAL EMPLOYMENT OPPORTUNITY
Cincinnatus LLC is an Equal Employment Opportunity employer. All qualified applicants will be considered without discrimination based on legally protected characteristics.
Reasonable accommodations are available upon request.
ARE YOU A QUALIFIED BACKEND ENGINEER?
If you have strong experience in Node.js, TypeScript, and Rust and are ready to contribute to large-scale technology projects, this could be an opportunity worth exploring.
Location restriction: United States. Check your eligibility and the employer’s requirements before applying.