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Capa

Senior Software Engineer

Capa

. Own a backend service (NestJS/TypeORM/Postgres) or frontend module (React/Vite/TanStack) end-to-end, from design through production .

Posted 10/24/2026full-timeMexico City • MexicoSeniorWebsite

Core Competencies

Role fit
Core Competencies

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

Demonstrates expertise in backend and frontend development with a strong focus on TypeScript, NestJS, and React. Capable of designing and implementing money-critical systems while ensuring code quality and mentoring junior engineers.

Highest-signal resume keywords
TypeScript ExpertiseNestJS DevelopmentPostgreSQL Database ManagementAWS Infrastructure ManagementIntegration Testing

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills
Node.jsTypeORMREST API DesignReactTanStack QueryComponent-Driven DevelopmentCDKIntegration TestingMoney-Critical System DesignObservability
Soft Skills
MentoringCode ReviewCollaboration
Tools & Technologies
AWS LambdaAWS IAMAWS KMSAWS S3AWS SQSAWS SNSTestcontainersSwaggerI18nextTailwind
Industry Keywords
FintechPaymentsCryptoKYBFXSettlement

Tech Stack

Tools & technologies
AWSJavaScriptNode.jsPostgresReactTypeScript

About the role

Key responsibilities & impact
  • Own a backend service (NestJS/TypeORM/Postgres) or frontend module (React/Vite/TanStack) end-to-end, from design through production
  • Design for money-critical correctness: idempotency, race conditions, reconciliation-safe state transitions
  • Write integration tests against real Postgres using Testcontainers for anything touching money flows
  • Own AWS infrastructure changes via CDK for owned services
  • Design and review API contracts using NestJS and Swagger, plus shared TypeScript types across services
  • Own QA for features end-to-end by writing and executing test plans and covering edge cases
  • Mentor Mid/Junior engineers and review pull requests
  • Raise the team's code-quality bar
  • Participate in on-call for money-critical paths
  • Partner with product and compliance on ambiguous, cross-cutting problems including KYB, FX, and settlement

Requirements

What you’ll need
  • 5+ years professional software engineering
  • Strong TypeScript across backend and frontend, or deep on one side and fluent on the other
  • Backend: Node.js + NestJS (or a comparable opinionated framework), an ORM (TypeORM), PostgreSQL, REST API design
  • Frontend: React, modern data-fetching (TanStack Query or equivalent), component-driven development
  • AWS fundamentals: Lambda, IAM, KMS, S3, SQS/SNS
  • Comfortable reading/writing CDK or another IaC tool
  • Understands why integration tests against a real DB matter when correctness has financial consequences
  • Fintech/payments/crypto experience is a nice-to-have
  • Datadog or comparable observability experience is a nice-to-have
  • i18next / multi-market LatAm product experience is a nice-to-have
  • Radix/shadcn-style design systems + Tailwind is a nice-to-have

Benefits

Comp & perks
  • Contrato por tiempo indeterminado
  • Trabajo híbrido
  • Lo antes posible