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Senior Software Engineer
Job summary
A financial technology firm based in Brazil is seeking a Senior Software Engineer. The role involves leading projects, building and operating REST APIs in Python, and owning API integrations with external partners. The ideal candidate will have expertise in Python backend development, as well as experience in payments and fintech workflows. Strong communication skills are required for client interactions and project collaboration. This position offers an opportunity to work in a dynamic and impactful environment.
Qualifications
- Expert Python backend engineer with strong typing and performance debugging skills.
- Proven experience in REST API development and operational design.
- Experience in payments/fintech workflows is a plus.
Responsibilities
- Lead project execution including design, implementation plans, and delivery coordination.
- Build and operate REST APIs in Python.
- Own API integrations with external partners.
Skills
Tools
Company: Fraud Deflect
Role: Senior Software Engineer
Language: Native/fluent English. Resumes in English.
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.
- 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.
- 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.
- 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.
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
* The salary benchmark is based on the target salaries of market leaders in their relevant sectors. It is intended to serve as a guide to help Premium Members assess open positions and to help in salary negotiations. The salary benchmark is not provided directly by the company, which could be significantly higher or lower.