Senior Node.js Developer

Flosum

. Build high-performance backend services and APIs for enterprise-grade SaaS applications .

Posted 9/25/2026full-timeRemote • BelgiumSeniorWebsite

Core Competencies

Role fit

Core Competencies

Use this summary to align your resume positioning with the role.

Demonstrates expertise in building high-performance backend services and APIs for enterprise-grade SaaS applications, with a strong focus on Node.js, TypeScript, and Salesforce integrations. Proficient in CI/CD practices, real-time data processing, and event-driven architectures, ensuring scalable and secure solutions.

Highest-signal resume keywords

Node.js DevelopmentTypeScript ProficiencyRESTful API DesignSalesforce DevelopmentCI/CD Pipeline Implementation

ATS Keywords

Tailor your resume

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills

Node.jsTypeScriptRESTful APISQL DatabasesNoSQL DatabasesAsynchronous ProgrammingEvent-Driven ArchitectureGit WorkflowsAutomated TestingDocker

Tools & Technologies

AWSGCPAzureSalesforce APIDevOps Toolchains

Industry Keywords

SaaSB2BSOC 2HIPAAFedRAMPGDPR

Tech Stack

Tools & technologies

AWSAzureCloudDockerGoogle Cloud PlatformJavaScriptMicroservicesNode.jsNoSQLSQLTypeScriptVisualforceVue.js

About the role

Key responsibilities & impact

Build high-performance backend services and APIs for 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
Build CI/CD pipeline tooling, automation frameworks, and developer productivity infrastructure
Implement real-time data processing and event-driven architectures for sensitive enterprise data at scale
Work directly with engineering leadership, product managers, and the CEO
Own significant parts of the architecture and ship production code used by enterprise customers
Own systems end-to-end and contribute during the company's growth phase

Requirements

What you’ll need

5+ years of professional Node.js development in production environments
Expert-level understanding of asynchronous programming, event loops, streams, and the Node.js runtime
Understanding of backpressure, setImmediate, process.nextTick, and unhandled promise rejections
Deep experience with TypeScript in production codebases
Strong command of RESTful API design, OAuth 2.0, JWT, and enterprise API security best practices
Proven experience with SQL and NoSQL databases, query optimization, and data modeling
Understanding of database schema performance implications at scale
Proficiency with Git workflows, code reviews, automated unit, integration, and end-to-end testing, and CI/CD pipelines
Understanding of Docker, cloud services such as AWS/GCP/Azure, and infrastructure-as-code principles
Highly preferred: Salesforce development experience with Apex, Lightning Web Components, Visualforce, or Salesforce API integrations
Highly preferred: Experience building or contributing to Salesforce ISV (AppExchange) products
Highly preferred: Vue.js development experience, especially Vue 3 Composition API and state management
Highly preferred: Experience in B2B SaaS serving enterprise customers with SOC 2, HIPAA, FedRAMP, or GDPR requirements
Highly preferred: Familiarity with DevOps/DevSecOps toolchains and practices in the Salesforce ecosystem
Long-term commitment to a full-time engagement; not seeking short-term contractors

Benefits

Comp & perks

Competitive compensation commensurate with your experience and impact
Direct collaboration with the founding team and engineering leadership — your voice will carry weight from day one
A profitable, stable company with aggressive growth plans — no funding anxiety, no runway clock
The opportunity to work on enterprise-grade products used by some of the largest organizations in the world
Meaningful technical challenges: security, compliance, scale, and reliability at the intersection of Node.js and Salesforce
A culture that rewards ownership, speed, and craftsmanship over politics and hierarchy
Remote-first flexibility with a results-oriented work environment