Senior Fullstack Developer (Node.js, Salesforce)

TL;DR

Senior Fullstack Developer (Node.js/Salesforce): Building and scaling enterprise-grade DevSecOps and data protection platforms with an accent on high-performance backend services and secure Salesforce integrations. Focus on architecting robust microservices, optimizing data processing, and delivering reliable production code for Fortune 500 clients.

Location: Must be based in Ukraine (Remote)

Company

Flosum is a profitable, bootstrapped B2B SaaS company providing the leading Salesforce-native DevSecOps and security platform for enterprise customers.

What you will do

• Develop high-performance backend services and APIs for enterprise SaaS applications.
• Build secure Node.js microservices and integrations within the Salesforce ecosystem.
• Create modern front-end experiences using Vue.js and TypeScript.
• Maintain and improve CI/CD pipeline tooling and developer productivity infrastructure.
• Implement real-time data processing and event-driven architectures for sensitive enterprise data.

Requirements

• 5+ years of professional Node.js development in production environments.
• Expert-level understanding of asynchronous programming, event loops, and Node.js runtime.
• Deep experience with TypeScript in production codebases.
• Strong command of RESTful API design, authentication patterns, and API security.
• Proven experience with SQL and NoSQL databases and query optimization.
• Solid understanding of containerization, cloud services, and infrastructure-as-code.

Nice to have

• Salesforce development experience (Apex, LWC, Visualforce).
• Experience building Salesforce ISV (AppExchange) products.
• Vue.js front-end development experience (Vue 3 Composition API).
• Background in B2B SaaS with strict compliance requirements (SOC 2, HIPAA, GDPR).

Culture & Benefits

• Competitive compensation package.
• Direct collaboration with the founding team and engineering leadership.
• Stable, profitable company environment with aggressive growth plans.
• Opportunity to work on enterprise-grade products for global organizations.
• Remote-first flexibility with a results-oriented culture.