Senior Software Engineer

Fraud Deflect; Cotia; Presencial; BRL 120.000 - 150.000; Tempo integral

Resumo da oferta

A leading fintech company in São Paulo is looking for a Senior Software Engineer to own and evolve critical payments and back-office services. The ideal candidate will design, build, and operate API-first Python systems and has expertise in REST APIs, payments automation, and working with Linux environments. Candidates should possess strong communication and leadership skills. This position offers the opportunity to directly engage with clients and drive complex workflow implementations in a collaborative setting.

Qualificações

• Strong typing, testing, concurrency fundamentals, and performance debugging.
• Experience implementing business logic for payments/fintech workflows.
• Comfortable on Linux servers with a DevOps mindset.

Responsabilidades

• Lead project execution and delivery coordination.
• Build and operate REST APIs in Python.
• Own API integrations with external partners.

Conhecimentos

Expert Python backend engineer

REST API development

Strong data structures

Client-facing technical communication

Ownership mentality and interest in leadership

Ferramentas

Docker

Kubernetes

Terraform

AWS

Descrição da oferta de emprego

Company: Fraud Deflect

Role: Senior Software Engineer

Language: Native/fluent English. Resumes in English.

About the role

Own and evolve critical payments/back-office services end-to-end: design, build, ship, and operate API‑first Python systems that automate disputes/chargebacks and related workflows. You’ll partner directly with clients and internal teams to translate business rules into reliable integrations, services, and data models—leveraging Linux, with a pragmatic DevOps mindset.

Responsibilities

• Lead project execution: technical design, implementation plans, code reviews, and delivery coordination.
• Build and operate REST APIs in Python (versioning, idempotency, auth, webhooks, integrations).
• Own API integrations with external partners/processors: onboarding, validation, retries, error handling, and SLAs.
• Implement complex payments/chargeback business logic from requirements and client workflows; ensure correctness and auditability.
• Model API/domain data with strong data‑structure fundamentals (schemas, invariants, normalization/denormalization tradeoffs).
• Develop and maintain client‑facing device intelligence instrumentation in JavaScript where needed (collection, privacy controls, performance).
• Meet and maintain contact directly with clients.
• Operate services on Linux: deployments, debugging, performance tuning, incident response, and reliability improvements.
• Contribute to DevOps practices: CI/CD pipelines, safe rollouts, observability (logs/metrics/traces), and operational automation.

Required

• Expert Python backend engineer (3.12+ preferred): strong typing, testing, concurrency fundamentals, and performance debugging.
• Proven REST API development experience (design + production operations), including integrations and webhooks.
• Strong data structures and API data modeling skills (clear contracts, backward compatibility, validations).
• Experience implementing business logic for payments/fintech workflows, especially disputes/chargebacks and reconciliations.
• Comfortable on Linux servers with a DevOps mindset (deploy/run/debug production services; automate operational work).
• Client‑facing technical communication: can interface with external stakeholders to clarify requirements, diagnose issues, and drive resolutions.
• Ownership mentality and interest in leadership: drive the full lifecycle from discovery → design → build → operate.

Nice to have

• JavaScript experience beyond basics (instrumentation, performance, privacy‑aware collection) for client integrations.
• Containerization/orchestration (Docker/Kubernetes), IaC (Terraform), and cloud‑native operations on Amazon Web Services.
• Event‑driven/workflow systems (SQS/Kafka/Kinesis; Airflow/Prefect/Dagster).
• Security/compliance exposure (PCI, SOC 2) and observability tooling at scale.

How to apply

Send an English resume and links to relevant work (repos, API docs, architectural notes, or write‑ups) showing:

• Python backend API development + real‑world API integrations
• Payments/disputes/chargebacks or similarly complex workflow automation
• Linux/DevOps experience running production services
• Any JavaScript instrumentation work and client‑facing delivery experience