Sr Backend | Golang, Node, TypeScript | Payments

Instaleap; Bogotá; Hybrid; COP 120,000,000 - 180,000,000; Full time

Benefits offered by this job

Hybrid Work

Flexible hours

Additional days off to vacations

Half day off on your birthday

Educational Budget

Health insurance

Job summary

Instaleap is seeking a Backend Engineer to build and evolve payment services end to end. You will use Go for new services and Node.js/TypeScript for maintaining existing systems, and design gateway integrations for core payment flows.

You will shape reliable transaction workflows, focus on observability, and drive deployment from discovery to production, collaborating with Product and other engineering teams.

Qualifications

• Backend engineer with production Go experience and API design focus.
• Experience evolving and maintaining backend systems in Node.js/TypeScript.
• Strong track record with relational data and transactional integrity.

Responsibilities

• Build and evolve payment services end to end using Go for new services and Node.js/TypeScript for existing systems.
• Design and implement payment gateway integrations for authorization, capture, cancellation and refunds.
• Build reliable transaction workflows with retries, timeouts, and idempotency.

Skills

Go

Node.js

TypeScript

PostgreSQL

Distributed systems

APIs design

Reliability engineering

AI-assisted development

Security in payments

Code reviews

Tools

AWS

Docker

Terraform

CI/CD

Job description

What would you do?

• Build and evolve payment services end to end, using Go for new services and Node.js, TypeScript, and PostgreSQL to maintain and improve existing systems.

• Design and implement payment gateway integrations, supporting transaction flows such as authorization, capture, cancellation and refunds.

• Build reliable transaction workflows that handle retries, timeouts, idempotency, concurrency, and partial failures while preserving transaction integrity.

• Drive technical solutions from discovery to production, translating business requirements into maintainable designs, identifying risks and dependencies early, and owning the outcome.

• Contribute to the evolution of our payment platform, helping migrate from legacy systems to a scalable, modular architecture while maintaining existing customer operations.

• Ensure production reliability and observability, using monitoring, logs, tracing, automated testing, and incident analysis to prevent issues and improve system resilience.

• Raise engineering standards through thoughtful code reviews, pragmatic architectural decisions, testing strategies, and continuous improvement of development practices.

• Collaborate with Product and other engineering teams to clarify requirements, challenge assumptions, communicate trade-offs, and deliver solutions aligned with business priorities.

• Share knowledge and provide technical leadership, mentoring teammates, facilitating technical discussions, and helping others make sound engineering decisions.

• Contribute to deployment and operations using AWS, Docker, Terraform, and CI/CD pipelines.

Your experience has been shaped by

• Go: strong hands-on experience building production services, designing APIs, managing concurrency, and writing maintainable, well-tested code.

• Node.js, TypeScript, and PostgreSQL: experience evolving existing backend systems, working with relational data, optimizing queries, and maintaining transactional integrity.

• Distributed systems and microservices: service boundaries, asynchronous communication, failure handling, retries, and consistency across services.

• Software architecture: clean architecture, domain-driven design, modularity, and pragmatic approaches to legacy modernization.

• Reliability engineering: idempotency, timeouts, observability, incident troubleshooting, and designing resilient systems.

• Automated testing: unit, integration, and contract testing, with a focus on business behavior and critical transaction paths.

• AWS and infrastructure as code: experience with cloud services, Docker, Terraform, and CI/CD pipelines.

• Technical leadership: mentoring engineers, conducting meaningful code reviews, facilitating technical discussions, and influencing decisions without relying on formal authority.

• Cross-functional collaboration: communicating technical trade-offs clearly, aligning with Product, and managing dependencies across teams.

• Payment systems or transactional domains: experience with payment gateways, billing, financial transactions, order processing, or other business-critical workflows. Direct payment experience is a strong plus.

• AI-assisted development as part of your daily workflow: You are already working with AI agents and assistants—not as an experiment, but as a normal part of your workflow.

• Security in payment systems: PCI-DSS scope and tokenization, webhook authentication, and responsible handling of sensitive data

Your SuperPowers

• You are a strong technical problem-solver: you can navigate complex systems, understand root causes, and deliver robust solutions without overengineering.

• You think beyond the happy path: you anticipate edge cases, failure scenarios, and operational risks before they become production incidents.

• You take end-to-end ownership: you follow through from technical discovery and implementation to deployment, monitoring, and production stability.

• You lead through influence: you help teammates grow, challenge ideas constructively, and bring people together around sound technical decisions.

• You balance pragmatism with engineering excellence: you know when to move fast, when to invest in the architecture, and how to explain those trade-offs.

• You communicate with clarity: you make complex technical topics understandable and raise risks, dependencies, and disagreements early.

What we bring to the table

• Hybrid Work: Work together as a team.

• Flexible hours: We trust your work and skills.

• Additional days off to vacations.

• Half day off on your birthday.

• Access to Educational Budget.

• Health insurance: Get the attention and care that you deserve. Available in some countries.