Senior Software Engineer (Node JS, React)

Requirements:

• 5+ years as a Full-stack web dev (SPA frameworks on the front end, NodeJS / NestJS framework on the back end, strict TypeScript).
• Understanding what a Design System is (working with out-of-the-box controls, utilizing as many out-of-the-box features as possible (e.g., Material, Carbon) – the main goal is not to invent your own controls, our UX is very aware of this.
• Familiarity with Cloud (Azure in our case, but things like basic offerings for UI, API, DB, networking, storage, authentication, feature flagging)
• Live in modern SDLC – automate everything (we are using Azure DevOps for everything – repos, build, deploy pipelines, work and release tracking, but might move to Github / GH Actions if there are benefits, like security scans)Good to have:
• Experience with multi-tenant apps (understanding how to segregate data, authentication, all the way up to rate/use limiting).
• Some diagramming skills for communication (e.g., Miro).
• Use of GenAI to augment work, but not blind trust in generated code.
• Understanding of iterative evolution of application architecture (start with a high-level skeletal structure, mock things, give to mids/juniors to fill out).

Responsibilities:

• Lead the technical design and implementation of complex fintech features across the full stack using SPA frameworks, NodeJS/NestJS, and strict TypeScript.
• Make strategic decisions regarding Design Systems—ensuring accessibility, consistency, and compliance across the interface.
• Architect backend and cloud systems with focus on security, regulatory compliance, scalability, multi-tenancy, and disaster recovery.
  
• Own and evolve automation practices across SDLC — secure CI/CD pipelines, automated compliance checks, security scanning, release management.
• Drive multi-tenant architecture decisions: data isolation, authentication/authorization layers, tenant-aware rate limiting, billing logic, and auditability.
• Define high-level architecture, break it down into implementable modules, and guide the team through iterative delivery (prototype → MVP → scale).
• Mentor middle and junior engineers; set engineering standards, code quality practices, and a security-first development culture.
• Use GenAI strategically as part of the engineering workflow — for scaffolding, research, and automation, with full code validation.
• Collaborate closely with product, UX, compliance, and data teams to align technical decisions with fintech regulatory needs.

What 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.
• Internal education(corporate library, Udemy courses).
• 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.