Senior Software Engineer / Team Lead - OP02307

DEV; São Paulo; Hybrid; BRL 649,000 - 973,000; Full time

Job summary

Dev.Pro is hiring in Latin America for a Senior Full-Stack Software Engineer to join an orchestration platform for a leading fintech client. You’ll develop React.js apps, embeddable widgets, and .NET services, with AWS-based solutions and a focus on secure, reliable software.

You’ll contribute across REST APIs, microservices, and partner integrations, while guiding engineers and participating in architectural discussions.

Qualifications

• 10+ years of experience developing and supporting production software.
• Strong C#/.NET Core skills, including REST APIs, DI, async programming, testing, and secure coding.
• Hands-on experience with React.js, JavaScript/TypeScript, component architecture, state management, HTML, and CSS.
• Experience with PostgreSQL, MongoDB, or similar databases.
• Experience with microservices, API-first development, third-party integrations, and resilient distributed systems.
• Hands-on experience with AWS, Docker, and Kubernetes/EKS.
• Ability to write automated unit and integration tests and troubleshoot UI, API, data, and cloud issues.
• Experience with Git workflows and CI/CD tools (GitHub Actions, Jenkins, GitLab CI).
• Ability to translate requirements into maintainable, well-documented solutions.
• Experience providing technical leadership and guidance to engineering teams.

Responsibilities

• Develop and maintain React.js applications, portals, and embeddable widgets.
• Build secure REST APIs and microservices using C# and .NET Core.
• Implement business workflows and integrations with finance providers, partners, enterprise APIs, webhooks, files, and AWS.
• Design and maintain PostgreSQL and MongoDB schemas, queries, migrations, and data-access patterns.
• Contribute to AWS workloads using EKS, Lambda, containers, and Step Functions or similar orchestration.
• Write unit, component, integration, contract, and end-to-end tests.
• Build reusable UI components and improve accessibility, performance, and maintainability.
• Guide engineers and participate in API/event-contract design, code reviews, architecture discussions, and documentation.
• Support infrastructure automation using CI/CD, Docker, Kubernetes, and IaC.
• Implement logging, metrics, tracing, and alerts; troubleshoot across layers.
• Collaborate with QA and operations on testing, release readiness, and recovery procedures.

Skills

C# / .NET Core

React.js

JavaScript / TypeScript

HTML / CSS

PostgreSQL

MongoDB

Microservices

API-first development

AWS

Docker

Kubernetes / EKS

CI/CD

Unit testing

Git workflows

Tools

GitHub Actions

Jenkins

GitLab CI

Job description

We are hiring in Latin America! At Dev.Pro, a US-based outsourced software development company, we're looking for contractors to join our global team of IT professionals helping tech companies scale their business through software engineering expertise. Operating as a remote-first company, our experts work across 55+ countries on five continents, giving us the flexibility and skillset to deliver high-quality engineering for projects of any size or complexity.

We invite a Senior Full-Stack Software Engineer to join our team and work on an orchestration platform for a leading global fintech company. The platform enables business partners to integrate once and offer a growing range of embedded financial products to their clients. In this role, you’ll develop and maintain React.js applications, embeddable widgets, and .NET services, contribute to AWS-based solutions, and support the delivery of secure, reliable, production-ready software.

What's in it for you:

• Help shape a growing platform that enables a wide range of embedded financial products
• Tackle complex engineering challenges across React.js, .NET, AWS, and partner integrations
• Influence technical decisions, guide the team, and stay hands-on with development

Is that you?

• 10+ years of experience developing and supporting production software
• Strong C#/.NET Core skills, including REST APIs, dependency injection, async programming, testing, and secure coding
• Hands-on experience with React.js, JavaScript/TypeScript, component architecture, state management, HTML, and CSS
• Experience with PostgreSQL, MongoDB, or similar relational and document databases
• Experience with microservices, API-first development, third-party integrations, and resilient distributed systems
• Hands-on experience with AWS, Docker, and Kubernetes/EKS
• Ability to write automated unit and integration tests and troubleshoot UI, API, data, and cloud issues
• Experience with Git workflows and CI/CD tools such as GitHub Actions, Jenkins, or GitLab CI
• Ability to translate requirements into maintainable, well-documented solutions
• Experience providing technical leadership and guidance to engineering teams
• Valid U.S. visa and ability to travel to the U.S. for onboarding and knowledge transfer

Desirable:

• Experience with embeddable widgets, micro-frontends, white-label apps, or multi-tenant SaaS
• Experience with AWS Lambda, Step Functions, ECS batch, S3, KMS, certificate or secret management
• Exposure to Python services, data pipelines, and unittest
• Experience with Terraform/Pulumi and GitOps tools (Argo CD)
• Experience with Splunk, Datadog, Grafana, CloudWatch, distributed tracing, and incident support
• Background in financial services, payments, embedded finance, lending, or banking

Key responsibilities and your contribution

In this role, you’ll combine hands-on engineering with technical leadership to deliver high-quality, reliable software solutions.

• Develop and maintain React.js applications, portals, and embeddable widgets
• Build secure REST APIs and microservices using C# and .NET Core
• Implement business workflows and integrations with finance providers, partners, enterprise APIs, webhooks, file exchanges, and AWS services
• Design and maintain PostgreSQL and MongoDB schemas, queries, migrations, and data-access patterns
• Contribute to AWS workloads using EKS, Lambda, containers, and Step Functions or equivalent orchestration
• Write unit, component, integration, contract, and end-to-end tests
• Build reusable UI components and improve accessibility, performance, and maintainability
• Guide engineers and contribute to API/event-contract design, code reviews, architecture discussions, and documentation
• Support infrastructure automation using CI/CD, Docker, Kubernetes, and infrastructure as code
• Implement logging, metrics, tracing, and alerts; troubleshoot issues across application layers
• Collaborate with QA and operations on testing, release readiness, and recovery procedures

Our next steps:

Submit a CV in English — Intro call with a Recruiter — Internal interview — Client interview — Offer

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