Senior Backend Developer, Golang – Payment Systems

Job not on LinkedIn

🔥 15 minutes ago

🇧🇷 Brazil – Remote

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 17%

What it means: the chance that no one is really hiring for this job.How to read it: 60% or higher means we think this is a ghost. Lower scores are less of a worry.Why this score:

• Just posted.
• Jobs at this company usually fill in 56 days.
• No salary listed.

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H&W Publishing

WebsiteLinkedInAll Job Openings

11 - 50 employees

📣 Marketing

🤝 B2B

Marketing • B2B

H&W Publishing is a U. S. -based holding company focused on direct-response marketing. It describes itself as an innovative holding that specializes in marketing de resposta direta (direct response marketing) and is listed on LinkedIn under Marketing Services. H&W Publishing likely manages or invests in marketing businesses and provides services centered on performance-driven, response-oriented campaigns for clients.

📋 Description

• Develop and enhance backend services in Go that process payments • Design and build integrations with gateways, acquirers, and PSPs • Ensure transaction reliability, consistency, and traceability, including idempotency, failure handling, events, and reprocessing • Develop services and integrations in Node.js/TypeScript • Work with AWS services used in day-to-day operations • Participate in design and architecture decisions with the team • Conduct code reviews, document decisions, and mentor junior developers • Translate business needs into technical solutions • Understand the architecture, payment services, and provider integrations within the first 30 days • Work independently on payment orchestrator deliverables within 60 days • Become a technical reference for payments, contributing to reliability, traceability, and code quality within 90 days

🎯 Requirements

• More than 3 years of experience in backend development • Strong production experience with Go • Solid experience with Node.js and TypeScript • Proven experience with payment systems • In-depth knowledge of the transaction lifecycle: authorization, capture, void, refund, chargeback, and settlement • Knowledge of gateways, acquirers, PSPs, sub-acquirers, card networks, issuers, BINs, and MIDs • Experience with soft and hard declines, retries, and routing between providers • Knowledge of 3DS/3DS2, tokenization, and PCI DSS • Experience with recurring payments, subscriptions, and reconciliation • Experience with event-driven architecture: queues, idempotency, at-least-once delivery, and reprocessing • Experience with REST APIs and webhooks • Practical knowledge of AWS (ECS, DynamoDB, SQS, EventBridge, Secrets Manager, and CloudWatch), plus familiarity with IAM • Daily hands-on experience with Docker • Strong foundation in automated testing and observability (logs, metrics, and tracing) • Intermediate English proficiency

🏖️ Benefits

• 100% remote work • Independent contractor (PJ)

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