# Senior FullStack Engineer (C#/React) – Ecommerce (LATAM) Remote from[LATAM](https://jobicy.com/job-region/latam.md)Annual salary Undisclosed Salary information is not provided for this position. Check our [Salary Directory](https://jobicy.com/salaries.md) to estimate the average compensation for similar roles.Department [Software Engineering](https://jobicy.com/categories/engineering.md) Employment type Full Time, Job posted12 Jun 2026Apply before12 Jul 2026Experience level Senior Views / Applies 916 / 71 [About company](https://jobicy.com/company/truelogic.md) * Share About [Truelogic](https://jobicy.com/company/truelogic.md) Accelerate Your Digital Transformation [Computer Software](https://jobicy.com/company-category/software.md) * 2011 Actively Hiring Verified job posting This job post has been [manually reviewed](https://jobicy.com/tools/help-center/employee/how-does-jobicy-verify-the-legitimacy-of-remote-job-listings.md) for authenticity and compliance. ### AI Summary This role is for a Senior FullStack Engineer (C#/React) working with a US-based nearshore staffing company, Truelogic, on a leading SaaS platform for service-based businesses. The engineer will design and maintain cloud-native applications, enhance frontend and backend systems, and collaborate with cross-functional teams. Responsibilities include building RESTful APIs, microservices, and AWS infrastructure, as well as mentoring junior developers. The ideal candidate has 5+ years of experience with C#, .NET Core, React, and cloud technologies, and is comfortable working in a fast-paced, collaborative environment. ### Role DNA Job Complexity Easy Hard Pace & Pressure Relaxed Fast-paced Autonomy Level Guided Full Ownership Communication Load Independent Highly Collaborative AI Insight This senior role demands expertise in full-stack development, cloud infrastructure, and mentoring, making it challenging due to the complexity of scalable SaaS platforms and modernization initiatives. ### Salary Analysis Median Highly Competitive $140,000US Market $120k – 160k 0 $176k AI Insight The salary was not specified in the listing. Based on US market data for a Senior FullStack Engineer with C#/React skills, the typical range is $120,000 to $160,000 annually, with a median of $140,000. Since the role is for a LATAM-based position with a US company, the actual offer may vary based on location and cost of living. ### Core Skills Required [C#](https://jobicy.com/jobs?search_keywords=C.md) [.NET Core](https://jobicy.com/jobs?search_keywords=NET+Core.md) [React](https://jobicy.com/jobs?search_keywords=React.md) [AWS](https://jobicy.com/jobs?search_keywords=AWS.md) [RESTful APIs](https://jobicy.com/jobs?search_keywords=RESTful+APIs.md) [Microservices](https://jobicy.com/jobs?search_keywords=Microservices.md) [SQL](https://jobicy.com/jobs?search_keywords=SQL.md) [NoSQL](https://jobicy.com/jobs?search_keywords=NoSQL.md) [Docker](https://jobicy.com/jobs?search_keywords=Docker.md) [CI/CD](https://jobicy.com/jobs?search_keywords=CICD.md) ### Cover Letter Sample Dear Hiring Manager, I am excited to apply for the Senior FullStack Engineer position at Truelogic. With over 5 years of experience in building scalable cloud-native SaaS applications using C#, .NET Core, and React, I am confident in my ability to contribute to your client's platform. My expertise in AWS, microservices, and mentoring aligns perfectly with the requirements of this role. I have a strong track record of designing RESTful APIs, optimizing system performance, and leading technical discussions. I thrive in collaborative environments and am passionate about delivering high-quality software that drives business impact. Thank you for considering my application. I look forward to the opportunity to discuss how my skills can support your team. Copy ### Sample Interview Questions Describe your experience with building scalable multi-tenant SaaS applications.I have worked on multi-tenant SaaS platforms where we isolated data per tenant using database schemas or tenant IDs. I implemented features like tenant-aware authentication, resource throttling, and customized configurations. For scalability, we used horizontal scaling with load balancers and caching layers.How do you approach migrating legacy systems to cloud-native architecture?I start with a thorough assessment of the current system, identifying bottlenecks and dependencies. Then I break the migration into incremental steps: containerizing existing services, moving to cloud infrastructure (e.g., AWS), and gradually refactoring monolithic components into microservices. I prioritize using CI/CD pipelines and automated testing to ensure reliability.Can you explain how you ensure high availability and reliability in distributed systems?I design for failure by implementing redundancy, auto-scaling, and health checks. Using message queues for asynchronous processing, circuit breakers for fault tolerance, and monitoring with tools like CloudWatch. Regular load testing and chaos engineering help identify weak points.Describe a time you mentored a junior engineer and improved their skills.I paired with a junior engineer on a feature implementation, guiding them through code reviews and design patterns. I encouraged them to write unit tests and refactor code for readability. Over a few months, their confidence grew, and they started contributing independently.How would you design a RESTful API for a high-traffic e-commerce platform?I would define clear resource endpoints following REST conventions. Use pagination, filtering, and caching (e.g., Redis) to handle high traffic. Implement authentication with JWT, rate limiting, and versioning. For scalability, use microservices, load balancers, and database read replicas. ## About Truelogic At Truelogic we are a leading provider of nearshore staff augmentation services headquartered in New York. For over two decades, we’ve been delivering top-tier technology solutions to companies of all sizes, from innovative startups to industry leaders, helping them achieve their digital transformation goals. Our team of 600+ highly skilled tech professionals, based in Latin America, drives digital disruption by partnering with U.S. companies on their most impactful projects. Whether collaborating with Fortune 500 giants or scaling startups, we deliver results that make a difference. By applying for this position, you’re taking the first step in joining a dynamic team that values your expertise and aspirations. We aim to align your skills with opportunities that foster exceptional career growth and success while contributing to transformative projects that shape the future. ## Our Client Leading SaaS platform that provides integrated software solutions for service-based businesses across industries such as Home Services, Health, and Fitness. Supporting over 600,000 businesses globally, our client delivers tools for operations, payments, marketing, and customer engagement. This role is part of one of their products, a highly rated mobile platform that enables contractors to manage estimates, invoicing, payments, and projects from anywhere. ## Job Summary We are seeking a Senior Full Stack Software Engineer to help build, enhance, and scale a cloud-native SaaS platform serving a growing customer base. This role will work across the full technology stack, including React frontend development, C#/.NET backend services, AWS cloud infrastructure, APIs, databases, and microservices. The ideal candidate has experience designing scalable multi-tenant SaaS applications, modernizing systems, and contributing to highly available, distributed architectures while collaborating with cross-functional teams to deliver impactful solutions. ## Responsibilities * Design, develop, and maintain cloud-native SaaS applications. * Build and enhance backend services using C# and .NET Core. * Develop modern frontend applications using React. * Design, implement, and maintain RESTful APIs and microservices. * Work with SQL and NoSQL databases to support application functionality and scalability. * Implement, optimize, and maintain AWS-based cloud infrastructure. * Collaborate with Product, QA, DevOps, and Engineering teams to deliver high-quality solutions. * Participate in architectural discussions and technical decision-making. * Mentor junior engineers and promote engineering best practices. * Maintain code quality through testing, code reviews, and continuous improvement. * Improve system performance, scalability, reliability, and operational efficiency. * Support modernization initiatives and cloud-native architecture adoption. ## Qualifications and Job Requirements * 5+ years of professional software engineering experience. * Strong experience with C# and .NET Core. * Strong experience with React. * Experience designing and developing RESTful APIs. * Experience building and maintaining microservices-based architectures. * Hands-on experience with AWS cloud services. * Strong knowledge of SQL databases such as PostgreSQL or SQL Server. * Experience with NoSQL databases such as MongoDB or DynamoDB. * Experience working with Docker and CI/CD pipelines. * Experience building and supporting SaaS products. * Experience working with multi-tenant architectures. * Strong understanding of software design, scalability, and performance optimization. * Excellent collaboration and communication skills. * Experience with Terraform and Infrastructure as Code. * Experience building serverless applications using AWS Lambda. * Knowledge of event-driven architectures and message queue systems. * Experience with DevOps tooling and cloud automation. * Experience designing and supporting scalable distributed systems. * Experience optimizing application performance and reliability at scale. * Technical mentoring or engineering leadership experience. * Experience working on large-scale SaaS platforms. ## What We Offer * 100% Remote Work: Enjoy the freedom to work from the location that helps you thrive. All it takes is a laptop and a reliable internet connection. * Highly Competitive USD Pay: Earn an excellent, market-leading compensation in USD, that goes beyond typical market offerings. * Paid Time Off: We value your well-being. Our paid time off policies ensure you have the chance to unwind and recharge when needed. * Work with Autonomy: Enjoy the freedom to manage your time as long as the work gets done. Focus on results, not the clock. * Work with Top American Companies: Grow your expertise working on innovative, high-impact projects with Industry-Leading U.S. Companies. ## Why You’ll Like Working Here * A Culture That Values You: We prioritize well-being and work-life balance, offering engagement activities and fostering dynamic teams to ensure you thrive both personally and professionally. * Diverse, Global Network: Connect with over 600 professionals in 25+ countries, expand your network, and collaborate with a multicultural team from Latin America. * Team Up with Skilled Professionals: Join forces with senior talent. All of our team members are seasoned experts, ensuring you’re working with the best in your field. Apply now! Show more [Apply now >](https://jobicy.com/jobs/146264-senior-fullstack-engineer-c-react-ecommerce-latam.md) > Annual salary information is not provided for this position. Explore salary ranges for similar roles in our [Salary Directory ›](https://jobicy.com/salaries.md) * ![Upload CV](data:image/svg+xml;base64,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) ### Upload your resume now To unlock remote work opportunities and be discovered by global employers. 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