Senior Full Stack Developer

🕒 September 25, 2025

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Softgic

WebsiteLinkedInAll Job Openings

51 - 200 employees

Founded 2011

🔒 Cybersecurity

🤖 Artificial Intelligence

Cloud • Cybersecurity • Artificial Intelligence

Softgic is a technology company focused on driving digital and cognitive transformation for its clients. With over 12 years of experience, Softgic provides innovative and tailored solutions across various areas, including software development, cloud data security, the metaverse, and automation. Their approach combines design, coding, and implementation to enhance business processes and ensure security and efficiency in technological infrastructure.

📋 Description

• Full ownership of features: take responsibility from concept and architecture to production deployment. • Collaborate with the architect and make independent architectural decisions within your domain. • Work autonomously on complex, distributed systems ensuring scalability, reliability, and performance. • Backend development with Ruby on Rails 8: performance tuning, background jobs (Sidekiq), custom gem development, REST and GraphQL APIs, versioning, rate limiting, secure auth patterns. • Implement microservices and event-driven architectures with inter-service communication patterns. • Database design and optimization for PostgreSQL: query optimization, indexing, partitioning; implement caching with Redis or Memcached. • Frontend development: build performant UIs with JavaScript/TypeScript and frameworks (React, Vue, Angular); optimize bundlers (Webpack, Vite, esbuild); use Hotwire and Tailwind CSS. • Design and maintain CI/CD pipelines; containerize via Docker and Kubernetes; ensure observability (monitoring, logging, Grafana). • Integrate LLMs and agent frameworks (LangChain, CrewAI); implement MCP connectors, vector DBs for RAG, and real-time agent interfaces (WebSockets, SSE, streaming APIs). • Product-focused engineering: implement business logic, optimize for conversion and retention, support A/B testing and feature flags. • Apply security best practices (OWASP), OAuth/JWT flows, encryption at rest and in transit. • Follow TDD with high automated test coverage; perform integration and end-to-end testing; lead code reviews and documentation.

🎯 Requirements

• 8–12 years of experience as a full stack developer in complex, distributed systems. • Advanced Ruby on Rails (v8) expertise, including performance tuning, Sidekiq, and custom gem development. • Strong knowledge of PostgreSQL with query optimization, indexing, and partitioning. • Advanced JavaScript/TypeScript (ES6+) skills with deep experience in frameworks such as React, Vue, or Angular. • Proficiency in REST and GraphQL API design and implementation. • Experience with microservices, event-driven architecture, and inter-service communication. • Strong understanding of caching strategies (Redis, Memcached) and database design for high load systems. • Solid DevOps skills, including CI/CD pipelines, Docker, Kubernetes, monitoring, and observability. • Hands-on experience with TDD and achieving high levels of automated testing. • Proven product-oriented mindset with experience implementing feature flags, analytics, and A/B testing. • Familiarity with LLM integrations, vector databases, RAG patterns, and agent frameworks (LangChain, CrewAI). • Knowledge of MCP (Model Context Protocol) for connectors and agent context management. • Strong background in security best practices, including encryption at rest and in motion. • Ability to work with Linux-based environments and infrastructure automation. • Experience with Slack, Telegram, WhatsApp, Teams integrations and WebSocket-based communications. • Fluent English (B2 or higher) and Spanish, with excellent communication skills. • Preferred: Experience with Python (AI/ML), Node.js, and interest in emerging languages like Mojo, Crystal, or Hexcute. • Preferred: Deep understanding of DDD and advanced design patterns (SOLID). • Preferred: Prior experience in startups or scale-ups, balancing speed and quality while scaling technical platforms.