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Senior Backend Software Engineer at Squad. Remote Location: Remote in Argentina. About our Client. Our client is a privately held, early-stage company pioneering the use of artificial intelligence to transform mental health paradigms and develop a new category of psychological fitness. The organization is focused on creating a world where individuals and communities are empowered to proactively identify and address psychological challenges and mental health concerns.. This company is backed by a leading innovation enterprise known for conceiving, building, and supporting ventures that invent breakthrough technologies across healthcare, agriculture, and sustainability. The backer has founded over 100 companies since 2000, including one recognized globally for its contributions to vaccine development.. The Role. Our client is seeking an experienced, creative, and talented Principal / Senior Software Engineer. The ideal candidate will have a strong background in software and product development, with the ability to lead projects and communicate effectively across teams and with ML researchers.. Key Responsibilities. In this role, you will:. Act as a single-threaded leader for both front-end and back-end application development.. Design system architecture for rapidly evolving, AI-enabled back-end components.. Contribute to User Interface design and participate in customer feedback.. Manage the application development lifecycle, including implementing Continuous Integration and Continuous Delivery best practices.. Leverage AWS cloud infrastructure for scalable and efficient deployment of AI models.. Uphold high standards of data security and compliance across all applications.. Successful candidates will thrive in a fast-paced, action-oriented, team environment and demonstrate a clear passion for AI innovation and impact. This position offers a unique opportunity to help drive the strategy of an early-stage AI-focused company. The candidate must be entrepreneurial, highly motivated, and purpose-driven, with a proven track record of building consumer applications or large internal applications. Strong collaboration and communication skills are essential, as is the ability to lead application development in a dynamic and innovative environment.. Qualifications. 5+ years of experience in software development, with a strong focus on building applications.. Extensive experience with AWS services (including EC2, S3, Lambda, etc.) or a similar cloud services provider.. Fluency in Python.. Demonstrated ability to build scalable, efficient, and secure software applications.. Motivated and team-oriented, with an ability to thrive in a multidisciplinary environment.. Excellent communication and collaboration abilities.. Preferred Qualifications. Experience with LLM development.. AWS Certifications, such as Solutions Architect Associate or Professional.. Ability to build applications using the AWS CDK.. Knowledge of security best practices for SaaS solutions.. What we offer. 💵 USD Salary. 🌎 Fully remote, Latam.. 📅 Flexible schedule & Paid PTO. 🚀 Top project in the US. 🤓 Training - Career path. Work with the Best, Become the Best.. At Squad, we don’t just build software—we build high-performing, multidisciplinary teams that drive digital acceleration. Our culture is rooted in collaboration, innovation, and continuous growth, ensuring that every team member is empowered to take ownership of their work and make a real impact.. What makes working with us different?. Global-Scale Projects, Startup Agility. – We work with top-tier US companies, from high-growth startups to established enterprises, solving complex engineering challenges with cutting-edge technologies.. High-Impact Work. – You won’t be another cog in the machine. Here, you’ll have the chance to shape meaningful solutions, influence decision-making, and see the direct impact of your contributions.. Ownership & Growth. – We believe in autonomy with accountability—our team members take the lead, drive projects forward, and constantly refine their craft.. A People-First Mindset. – Whether it’s flexible work arrangements, continuous learning opportunities, or an emphasis on work-life balance, we prioritize the well-being and growth of our team.. Tech-Driven Excellence. – Our engineers are passionate about best practices, scalability, and crafting high-quality code. You’ll work with some of the best talent in the industry, always pushing boundaries.. If you’re looking for a dynamic environment where you can grow, innovate, and make an impact—this is the place for you. 🏆