Middle Software Engineer (Go, React, IOS Native)

Requirements:

• 3–4+ years of experience as a Full-stack, Backend, or Frontend Engineer, with hands-on experience across Go (Golang) and React for web, and native iOS development for mobile.
• Strong understanding of microservices, distributed systems, and modern frontend architectures.
• Demonstrated sense of ownership and ability to deliver results within large, complex systems.
• Strong analytical and problem-solving skills.
• Excellent communication and organizational abilities.
• Proficiency in spoken and written English.
• Experience in the fintech domain and hands-on payment integrations is a strong plus.

Technical Skills: 

• Strong hands-on experience with Go (Golang) for backend service development.
• Proficiency in React for web development and iOS Native (Swift / SwiftUI or UIKit) for mobile applications.
• Solid knowledge of TypeScript and modern JavaScript (ES6+).
• Experience designing and integrating RESTful or gRPC APIs; GraphQL familiarity is a plus.
• Strong understanding of Go concurrency patterns (goroutines, channels).
• Experience working with relational and/or NoSQL databases (e.g., PostgreSQL, MySQL, MongoDB, Redis).
• Familiarity with frontend tooling such as Webpack, Babel, ESLint, and Prettier.
• Experience writing automated tests for backend (unit/integration) and frontend/mobile applications (e.g., Jest, RTL, XCTest).
• Hands-on experience with cloud platforms; working with AWS services such as Lambda, DynamoDB, and Kinesis Streams is a plus. Experience with similar services on GCP or Azure is also valued.
• Comfortable working with Docker, Kubernetes, and cloud-native infrastructure.
• Strong understanding of application performance monitoring, profiling, and debugging across backend, web, and mobile platforms.

Preferred Qualifications:

• Experience building scalable, high-traffic consumer-facing platforms, marketplaces, or SaaS products.
• Exposure to event-driven architectures, message queues, or streaming platforms (e.g., Kafka, NATS, RabbitMQ).
• Experience optimizing performance and conducting benchmarking for Go services and iOS / React applications.
• Experience working in polyglot environments with Go, TypeScript, and shared component libraries.
• Familiarity with DevOps practices and/or infrastructure as code.

Responsibilities:

• Design, build, and maintain scalable backend services and APIs using Go (Golang).
• Develop high-quality, user-friendly web interfaces using React and native iOS applications.
• Own and deliver major system components end-to-end, from backend architecture to user-facing experiences.
• Collaborate closely with product, design, and engineering teams to translate business requirements into robust and performant solutions.
• Write clean, maintainable, and well-tested code across Go, TypeScript, React, and iOS Native environments.
• Integrate frontend and mobile applications with backend services via REST, gRPC, or GraphQL.
• Continuously optimize performance across backend services, web clients, and mobile applications.
• Participate in code reviews, architectural discussions, and pair programming to uphold engineering excellence.
• Support CI/CD pipelines, automated testing, and deployment processes for backend, web, and mobile components.

We offer:

• Annual paid vacation of 18 working days.
• Extra vacation days for long-lasting cooperation.
• Annual paid sick leave of 10 days.
• Maternity/Paternity leave.
• The opportunity for sabbatical leave.
• Marriage and Parenthood Package.
• Compensation for sports activities (up to 250$ per year) or health insurance covering (70%) — after the trial period.
• Career development plan.
• English and Spanish classes.
• Paying taxes and managing PE (Private Entrepreneur).
• Technical equipment.
• Internal Referral program.
• Opportunity to take part in company volunteering activities.
• Sombra is a “Friendly to Veterans” award-holder.