Senior Backend Engineer

Role: As a Senior Backend Engineer, with an emphasis on API & AI Integrations, you will play a critical role in developing, scaling, and maintaining the backend systems that power OxeFit’s innovative fitness technology ecosystem, including OxeAI. This position is responsible for designing secure, scalable APIs, integrating AI-driven services, and building cloud-native solutions that enable seamless interactions between software platforms, fitness equipment, mobile applications, and enterprise partners.

You will work closely with cross-functional teams including AI, Product, Mobile, Embedded Systems, and Customer Experience to deliver high-quality backend services that support the future of intelligent fitness.

Essential Functions:

• Design, develop document, and maintain secure, scalable APIs and backend services supporting OxeAI and OxeFit products
• Build and manage integrations between AI platforms, internal applications, third-party systems, and connected fitness technologies
• Develop backend applications using C#, .NET, ASP.NET Core, Python, and modern software engineering best practices
• Design and optimize data models, databases, and service architectures to support high-volume, real-time user interactions
• Collaborate with AI and machine learning teams to integrate intelligent features into customer-facing products
• Develop and maintain cloud-native services within Azure environments
• Build and support event-driven architectures utilizing messaging platforms
• Create and maintain automated unit, integration, and performance testing strategies
• Support CI/CD pipelines and deployment automation using tools such as Docker, Terraform, GitHub Actions, Azure DevOps, or similar technologies
• Monitor system performance, troubleshoot production issues, and proactively identify opportunities for optimization

Do you have experience in Web services design?, Do you have a Bachelor’s degree?, * Bachelor’s degree in Computer Science, Software Engineering, Computer Engineering, or related field, or equivalent professional experience

• 5+ years of professional software engineering experience, including significant backend development experience
• Strong proficiency in C#, .NET, ASP.NET Core, Python, and API development
• Experience designing and supporting APIs and web services in production environments
• Experience integrating third-party APIs, SaaS platforms, and cloud services
• Experience working with cloud environments, preferably Microsoft Azure
• Understanding of distributed systems, microservices architecture, and event-driven design patters
• Experience with source control, automated testing, and CI/CD pipelines

What makes you stand out:

• Experience building AI-enabled application or integrating LLMs, AI agents, or generative AI platforms
• Experience developing API’s that support mobile applications, connected devices, or IoT ecosystems
• Experience with Azure OpenAI, OpenAI API’s, Anthropic, Google Gemini, or similar AI platforms
• Experience with fitness technology, wearable technology, health platforms, or connected hardware products
• Experience working in startup or high-growth technology environments

What you can expect:

• Equity ownership participation
• Comprehensive benefit package and employer sponsored memberships
• A fun, challenging, and engaging start-up environment
• Agile, self-managed, self-organized teams
• A culture driven by innovation and team-focused engagement
• An entity that is committed to personal growth and opportunity
• Ability to work with cutting-edge and emerging technologies

Work authorization: Must be authorized to work in the United States. OxeFit will not sponsor applicants for employment visas.

Pulled from the full job description

• Health insurance
• Paid time off
• Vision insurance
• Dental insurance
• Life insurance, EEO Statement:
• OxeFit, Inc. is an equal opportunity employer that is committed to diversifying its workforce
• OxeFit, Inc does not discriminate against any applicant for employment, or any employee because of age, color, sex, disability, national origin, race, religion, or veteran status.

The statements contained in this document are intended to describe the general nature and level of work being performed by a colleague assigned to this description. They are not intended to constitute a comprehensive list of functions, duties, responsibilities, qualifications or local variances. OxeFit reserves the right to assign, modify, or remove duties and responsibilities at any time based on business needs.

Pay: $120,000.00 - $140,000.00 per year

Benefits:

• Dental insurance
• Health insurance
• Life insurance
• Paid time off
• Vision insurance