WEX

Software Development Engineer 4

WEX
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2 months ago
Bengaluru, IndiaStaff+

Responsibilities

  • Define and evolve architecture across multiple Mobility services and resolve cross-team bottlenecks.
  • Lead architecture reviews and technical workshops with technical, business, security, compliance, operations, and partner stakeholders.
  • Establish reusable API, service communication, event-driven integration, data access, observability, and cloud infrastructure patterns.
  • Set standards for REST and gRPC APIs, service contracts, versioning, compatibility, security, and integration patterns.
  • Design secure, scalable, highly available, and resilient systems for fleet management and mobility payments.
  • Drive security-by-design, threat modeling, authorization, data protection, auditability, and payment compliance practices.
  • Define SLI, SLO, operational readiness, observability, chaos testing, and resilience standards.
  • Create reusable CI/CD and infrastructure-as-code patterns, including Helm charts, Argo workflows, Terraform modules, and secure cloud templates.
  • Set organization-wide expectations for code quality, testing, maintainability, and production behavior.
  • Code selectively in foundational or technically challenging components and validate architecture through prototypes and technical spikes.
  • Lead complex incident resolution, corrective actions, reliability improvements, and cross-service debugging.
  • Build self-service tools, dashboards, and automation for engineering, support, and operations teams.
  • Shape cross-team roadmaps by identifying dependencies, risks, architectural constraints, and technical debt.
  • Mentor senior engineers and promote inclusive, thoughtful technical decision-making.
  • Evaluate emerging technologies and develop responsible AI solutions, including agents, orchestration, memory, evaluation, safety controls, and production integrations.
  • Maintain architecture documentation, design records, reference implementations, runbooks, corrective-action documents, and operational-readiness plans.

Requirements

  • Bachelor’s degree in Computer Science, Software Engineering, or a related field.
  • 7–12 years of professional software engineering experience with technical leadership across multiple teams or systems.
  • Deep knowledge of data structures, algorithms, object-oriented design, distributed systems, and complex problem solving.
  • Experience designing and evolving internet-scale services with strong scalability, availability, security, reliability, and operability.
  • Backend development expertise with Java or C#, Spring Boot, ODATA, gRPC, and SQL-based systems.
  • Experience defining service boundaries, integration contracts, platform patterns, and architecture standards used by multiple teams.
  • Experience with event-driven architecture, Kafka, Docker, Kubernetes, and infrastructure as code.
  • Experience establishing observability, SLI/SLO, incident management, resilience testing, and production-readiness practices.
  • Experience with secure API design, threat modeling, compliance-by-design, and PCI DSS or other regulated payment environments.
  • Experience using Cursor AI, Kiro, and GitHub Copilot to improve delivery, documentation, code quality, and engineering enablement.
  • Experience designing or deploying production-grade AI agents, copilots, multi-agent systems, or distributed AI architectures.
  • Familiarity with vector databases and AI evaluation, safety, governance, and responsible AI practices.
  • Preferred qualifications include a master’s degree, payments or fintech experience, mobile development experience, multi-team platform or reliability leadership, internal developer platform experience, and production AI deployment experience.
  • Preferred vector database experience includes Pinecone, Weaviate, OpenSearch, or Milvus.

Tech Stack

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WEX

About WEX

5,001-10,000 employees

WEX is a public financial technology company that provides corporate payment solutions to fleets, healthcare/benefits administrators, and travel businesses. Its products include fuel and mobility cards, virtual card payments, and platforms for HSAs/FSAs/HRAs, with revenue from payment processing and software/service fees. Founded in 1983 and headquartered in Portland, Maine, WEX trades on the NYSE under WEX and was formerly known as Wright Express.

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