Senior Node.js Developer (Poland)

Flosum is a bootstrapped, profitable B2B SaaS company building the leading Salesforce-native DevSecOps, Data Protection, and Security platform. The company serves Fortune 500 enterprises in highly regulated industries such as financial services, healthcare, government, and insurance. Flosum is a Salesforce Summit Partner and Innovation Award winner with a focus on security, compliance, and reliability, built 100% on the Salesforce platform.

Non-Negotiable Technical Requirements:

• 5+ years of professional Node.js development in production environments
• Expert-level understanding of asynchronous programming, event loops, streams, and the Node.js runtime
• Deep experience with TypeScript in production codebases
• Strong command of RESTful API design, authentication patterns (OAuth 2.0, JWT), and API security best practices
• Proven experience with SQL and NoSQL databases, query optimization, and data modeling at scale
• Proficiency with Git workflows, code review, automated testing (unit, integration, end-to-end), and CI/CD pipelines
• Solid understanding of containerization (Docker), cloud services (AWS, GCP, Azure), and infrastructure-as-code principles

Highly Preferred:

• Salesforce development experience: Apex, Lightning Web Components (LWC), Visualforce, or Salesforce API integrations
• Experience building or contributing to Salesforce ISV (AppExchange) products
• Vue.js front-end development experience, especially Vue 3 Composition API and state management
• Experience in B2B SaaS companies serving enterprise customers with compliance requirements (SOC 2, HIPAA, FedRAMP, GDPR)
• Familiarity with DevOps/DevSecOps toolchains and practices in the Salesforce ecosystem

• Build high-performance backend services and APIs powering enterprise-grade SaaS applications
• Develop scalable, secure Node.js microservices and integrations within the Salesforce ecosystem
• Create modern front-end experiences using Vue.js and TypeScript for demanding enterprise users
• Develop CI/CD pipeline tooling, automation frameworks, and developer productivity infrastructure
• Implement real-time data processing and event-driven architectures handling sensitive enterprise data at scale