Software Engineer II - Backend

About Us Wati is the world's leading WhatsApp-first conversational growth platform, empowering businesses to build deeper customer relationships and accelerate revenue growth. Trusted and loved by over 14,000 customers across 100+ countries, Wati has established itself as the premier choice for businesses leveraging WhatsApp and other messaging channels to connect with customers on their platform of choice. In a world where real-time interactions drive growth, Wati's story is all about business growth through conversations. At Wati, we believe that every conversation matters, whether it's engaging a first-time prospect, nurturing a qualified lead, or deepening relationships with loyal clients. We transform these conversations into opportunities for building relationships, and strong relationships lead to increased revenue. Our Platform The AI-native platform simplifies complex business operations by bringing all customer interactions under one intelligent roof. Designed for scalability and ease of use, our solution delivers a measurable ROI while adapting to businesses of all sizes, from emerging startups to established enterprises. Our Backing & Partnerships Wati is proudly backed by world-class investors including Tiger Global, Sequoia Capital, DST Global, and Shopify. As a Premium-tier Partner of Meta, Google, and WhatsApp, we maintain the highest standards of integration and platform excellence. As Wati continues to scale rapidly, we're looking for a Software Engineer II - Backend to work closely with Development, QA, DevOps, Support and Product. You are a leader that will participate in senior technology strategy discussions, drive ideation across a distributed software team, develop implementation roadmaps and work with technical individuals to transform this into software products and solutions. What you’ll do:  Refactor, test, and maintain components of our monolithic C# application, gradually migrating critical services to Golang microservices with clean, reusable, and efficient code. Design, develop, and deploy high-traffic distributed systems (e.g., REST/gRPC APIs, event-driven workflows, data pipelines) using Go and C#, ensuring fault tolerance and resilience. Improve latency, throughput, and resource efficiency in both legacy C# and modern Go services, leveraging caching (Redis), message brokers (Kafka/RabbitMQ), and database optimization. Collaborate with cross-functional teams, including design, product, and QA, to deliver a seamless and engaging user experience. Partner with DevOps to streamline CI/CD pipelines, QA to automate testing, and Product to align technical solutions with business requirements. Participate in system design reviews, advocate for scalable patterns (e.g., circuit breakers, load balancing), and ensure security best practices (auth, RBAC, encryption). Troubleshoot and resolve backend performance, scalability, and reliability challenges in production environments. Lead code reviews, mentor junior engineers, and champion standards for maintainable code across C# and Go codebases Requirements Bachelor’s degree in Computer Science, Engineering, or related field, or equivalent practical experience. 5+ years of backend development experience, including: 2+ years with C# (.NET Core, ASP.NET, Entity Framework) in monolithic architectures. OR 1+ years with Golang (Gin, Echo, Goroutines, Go modules) or strong willingness to learn. Expertise in distributed systems: REST/gRPC APIs, microservices, message brokers (Kafka/RabbitMQ), and caching (Redis). Proficiency in database design and optimization (SQL: PostgreSQL/MySQL; NoSQL: MongoDB). Hands-on experience with cloud platforms (AWS/Azure/GCP), containerization (Docker/Kubernetes), and CI/CD pipelines (GitHub Actions/Jenkins). Strong understanding of security practices: authentication/authorization (JWT, OAuth), RBAC, and data encryption. Fluency in English with excellent communication skills to collaborate across global teams. What will make you stand out:  Hands-on experience coding with tools like GitHub Copilot, Cursor, or other AI-assisted development environments. Proven track record of building and launching products from 0 to 1. Prior experience developing overseas or export-focused applications. Experience with serverless architectures (e.g., AWS Lambda) or microservices architectures. Knowledge of event-driven systems (e.g., Kafka, RabbitMQ). Prior work on scalable, high-traffic applications.