Senior Software Engineer - Freelance

Join a dynamic remote team as a senior software engineer specializing in backend development with a focus on AI/ML and full-stack technologies. This contract role offers the opportunity to design and build scalable, intelligent software products from the ground up. You will work closely with founders to architect and implement robust backend systems, integrate advanced AI/ML features, and contribute across the modern web stack. The position is ideal for an experienced engineer seeking high ownership, flexibility, and the chance to make a significant impact in a fast-growing startup environment. Responsibilities

• Design, develop, and maintain scalable backend systems for web applications
• Integrate AI/ML features and algorithms into production environments
• Collaborate with founders and cross-functional teams to define technical requirements and deliver solutions
• Build and deploy APIs, ensuring high performance and reliability
• Contribute to full-stack development as needed, including frontend integration
• Implement best practices in code quality, testing, and DevOps
• Monitor, troubleshoot, and optimize system performance
• Stay current with emerging technologies relevant to backend and AI/ML development

Skills And Requirements

• Minimum 5 years of senior-level software engineering experience
• Advanced proficiency in backend languages such as C#, Java, Ruby, Python, JavaScript, or Go
• Strong experience deploying APIs and production systems
• Solid understanding of AI/ML concepts and practical integration into backend services
• Familiarity with cloud platforms (e.g., AWS, Azure, GCP) and microservices architecture
• Experience with DevOps practices and CI/CD pipelines is a plus
• Excellent problem-solving skills and ability to work independently in a remote setup
• Advanced English communication skills, both written and verbal
• High degree of ownership, accountability, and adaptability

About Twine Twine is a leading freelance marketplace connecting top freelancers, consultants, and contractors with companies needing creative and tech expertise. Trusted by Fortune 500 companies and innovative startups alike, Twine enables companies to scale their teams globally. Our Mission Twine's mission is to empower creators and businesses to thrive in an AI-driven, freelance-first world.