Senior .Net Back-end Developer jobs in United States
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Wirex · 3 months ago

Senior .Net Back-end Developer

positionUnited States
timeFull-time
remoteRemote
seniorityMid, Senior Level
date4+ years exp

Wirex is a company focused on providing access to digital currency benefits and has launched a crypto-enabled debit card. They are seeking an experienced Senior .Net Back-end Developer to build cutting edge fintech projects and contribute to the future of digital finance.

AppsBlockchainCryptocurrencyFinancial ServicesFinTechMetaversePersonal Finance

Responsibilities

Design and implement event-driven and microservice-based architectures using modern .NET technologies
Build and maintain RESTful APIs and background services supporting real-time financial operations
Collaborate in Agile ceremonies (grooming, planning, estimation, retrospectives) with product, QA, and DevOps
Take ownership of features from concept to production—including architecture, testing, and monitoring
Proactively refactor legacy components and evolve platform architecture to meet current scalability, security, and maintainability standards
Translate product and compliance requirements into robust unit, integration, and end-to-end test coverage
Contribute to code reviews, CI/CD workflows, documentation, and team knowledge sharing

Qualification

.NET/C#ASP.NET Core Web APIDistributed systemsMSSQLEvent-driven architectureMicroservice architectureEnglishUkrainian communicationRussian communication

Required

4+ years of commercial experience with .NET/C# in production systems
Hands-on with .NET Core 3.1+ / .NET 6+, ASP.NET Core Web API, and background services
Expertise in distributed systems, event-driven architecture
Practical understanding of multithreading, async/await, and building resilient, high-load systems
Experience working with MSSQL, Redis, knowledge of data caching, transactions, and query optimization
Knowledge of message orchestration patterns (saga, idempotency, DLQ)
Maintains SOLID principles, clean code, design patterns
Good English for documentation, Ukrainian or Russian communication skills

Preferred

Experience deploying and running services in a cloud environment, familiarity with containerization (Docker) and CI/CD pipelines
Experience with Azure services (e.g., Azure Functions, Service Bus, Cosmos DB, Key Vault, etc.)
Familiarity with Kafka/Azure EventHubs, gRPC, or Message Queues (RabbitMQ, Azure Service Bus)
Experience with observability and monitoring (App Insights, Prometheus, OpenTelemetry)

Benefits

Premium tariffs for our product.
Semi-remote work with flexible hours.
Home office allowance.
Virtual share options scheme after the probation period.
Comprehensive medical insurance after the probation period.
Generous vacation policy: 20 business days of paid leave + 12 paid floating holidays.
Paid sick leave, Birthday, and Anniversary leave.
Length of Service Holidays.
Engaging in online events for learning and enjoyment.
Coworking with all facilities and parking compensation in Wrocław/Kyiv.

Company

Wirex

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Wirex is a digital payment platform that aims to make crypto and traditional currencies equal and accessible to everyone.
dateFounded in 2014
location
London, England, GBR
people-size201-500 employees
web-link
https://wirexapp.com

Funding

Current Stage
Growth Stage
Total Funding
$27.77M
Key Investors
SBI Group
2021-12-10Series B· $19.91M
2020-09-21Equity Crowdfunding· $4.67M
2017-03-06Series A· $3M

Leadership Team

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Dmitry Lazarichev
Co-Founder & Co-CEO
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Pavel Matveev
Co-Founder & Co-CEO
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Recent News

Electronic Payments International
Wirex and TRON DAO unveil on-chain payment layer for global transfers
2026-01-07
PR Newswire
Wirex Launches TRON-Native Payment Infrastructure for Agentic Payments
2026-01-06
Financial IT
Visa Launches Stablecoins Advisory Practice to Accelerate Digital Payments Innovation in Europe
2025-12-15
Company data provided by crunchbase