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SPD Technology
SPD Technology
501 – 1,000 Employees
Artificial IntelligenceB2BFintech
SPD Technology is a B2B software product development partner that helps enterprises and growth-stage companies create, modernize, and scale digital products. Its work spans cloud and DevOps, AI and machine learning, data engineering and analytics, fintech and payment systems, application modernization, system integration, APIs, security, quality engineering, and web and mobile UX/UI. The company builds solutions such as payment, billing, fraud-detection, and data platforms for sectors including fintech, insurance, healthcare, and e-commerce.
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Senior Backend Engineer - Payments, Go, TypeScript, Node.js - Remote in Ukraine

SPD Technology is hiring a Senior Backend Engineer to develop payment infrastructure for merchants and partner platforms. The role covers payment flows, processor integrations, reconciliation, payouts, and reliable financial systems.

ESSpainGEGeorgiaPLPolandPTPortugalRORomaniaUAUkraineRemoteFull-timeSeniorEnglish RequiredBackend EngineerSoftware Engineer
GoJavaScriptMagentoNode.jsRuby on RailsTypeScript

Description

  • Help develop payment infrastructure for merchants and partner platforms
  • Own complete payment lifecycles in TypeScript/NestJS services, from authorization and capture through refunds, disputes, and payout confirmation
  • Create and maintain processor and acquirer integrations through well-defined internal abstractions
  • Design embedded and hosted checkout solutions using hosted fields, iframes, and tokenization to reduce PCI scope
  • Develop fee and pricing logic for tiered, interchange-plus, flat-rate, rounded, special-rate, and edge-case scenarios
  • Build reconciliation and settlement systems that compare processor reports and settlement files with internal records
  • Engineer resilient event processing with idempotency keys, webhook deduplication, out-of-order handling, backoff retries, and state machines
  • Connect fraud, bank-account verification, and KYC services, then refine decisioning based on observed outcomes
  • Manage ACH processes, including submission windows, returns, return codes, NOCs, and retry policies
  • Protect financial-domain accuracy while maintaining complete audit trails and reconciliation evidence
  • Serve as the payments subject-matter expert, guide product decisions about payment rails, and review related code
  • Work closely with a US-based team during 4–6 hours of overlap with US Central Time

Requirements

  • At least six years of professional software engineering experience
  • Three or more years of hands-on work with payment systems or processing
  • Strong backend development skills in Go, TypeScript, and Node.js
  • Experience owning production payment flows beyond straightforward payment API integrations
  • Experience integrating providers such as Stripe, Adyen, Braintree, Checkout.com, Worldpay, Fiserv, or comparable processors, gateways, and acquirers
  • Thorough knowledge of the card-payment lifecycle, including authorization, capture, settlement, refunds, chargebacks, and disputes
  • Knowledge of bank payment rails; ACH/NACHA experience, including returns and transaction timing, is preferred
  • Experience implementing payment reconciliation and settlement
  • Strong command of webhooks, retries, idempotency, asynchronous processing, and distributed-system failure modes
  • Experience modeling relational data for transaction-intensive systems
  • Knowledge of PCI DSS and secure payment patterns such as tokenization and sensitive-data isolation
  • Exceptional focus on correctness and financial-system edge cases
  • Comfort using modern AI-assisted development tools
  • Fluent English communication and confidence collaborating directly with a US-based team
  • Availability for four to six hours of daily overlap with US Central Time
  • Bonus: Experience with platform, marketplace, or facilitator models, including split payments, sub-merchant onboarding, and multi-party flows
  • Bonus: Experience with payout and disbursement rails, including bank-account collection, verification, and status management
  • Bonus: Experience with fraud and risk tools and bank-account validation services
  • Bonus: Experience developing e-commerce plugins or SDKs for platforms such as WooCommerce, Shopify, or Magento
  • Bonus: Knowledge of multicurrency, cross-border, or alternative payment methods
  • Bonus: Experience applying event sourcing to financial state and designing double-entry ledgers

Benefits

  • Choice of full-time remote work globally or hybrid work from office hubs
  • Flexible working hours
  • Consistent workload and income
  • Performance reviews with a defined career path
  • Mentorship program
  • Personal development planning
  • Individual learning access through the corporate library
  • Support for public speaking
  • Company-wide technology and cultural events
  • Flexible, supportive culture centered on collaboration, open communication, and mutual respect
  • Opportunities to contribute to meaningful CSR initiatives

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