Top Remote Software Engineer Jobs in Washington DC,

Provide technical leadership for sustaining and modernizing a portfolio of .NET web applications and reports. Develop and modernize code (C#, ASP.NET Core, .NET 4.8), migrate SSRS to Power BI and WebForms to ASP.NET Core, design Azure cloud infrastructure (Databricks, Synapse, Functions, App Services), maintain SQL Server/T-SQL databases, ensure security/ATO compliance and accessibility, and mentor junior developers on task-based government assignments.

Lead design and delivery of scalable, secure backend platform services. Build services in C# or TypeScript, work with SQL/NoSQL databases (PostgreSQL preferred), maintain CI/CD and IaC, optimize performance and reliability, apply security best practices, mentor engineers, collaborate cross-functionally, and shape long-term platform architecture and engineering standards.

Lead cloud-native architecture for enterprise SaaS: design, develop, and deploy scalable microservices, APIs, frontend apps, CI/CD pipelines, and integrations; drive security-by-design, performance engineering, cost optimization, incident triage, documentation, and mentor engineering teams while aligning architecture to product goals.

Develop, maintain, and scale user-focused web and mobile applications. Write clean HTML/CSS/JavaScript, integrate back-end services and databases, collaborate with designers, document solutions, apply security and best practices, and stay current with web technologies.

Lead design, development, and maintenance of enterprise-grade React + TypeScript applications. Own front-end performance, responsiveness, and security; integrate with .NET/Azure backends; mentor junior developers; perform code reviews and debugging; modernize legacy apps; collaborate with designers, offshore teams, and stakeholders in Agile ceremonies.

Lead ServiceNow platform architecture and governance, define standards and CI/CD pipelines, design secure integrations with ERP/HR/security/data-protection systems, guide development partners, and drive automation using Flow Designer, IntegrationHub, and Orchestration across ITSM/ITOM/SecOps modules.

Contract remote .NET/Kentico web developer to build interactive, dynamic websites. Requires front-end web development experience and familiarity with the Kentico CMS. Six-week engagement.

Design, build, and maintain scalable web applications for payroll and accounting. Collaborate with engineers and product partners, write tested code, participate in code reviews, contribute to architecture, improve CI/CD and monitoring, support production (including on-call), and communicate progress while continuously learning.

Design, build, and maintain Ruby on Rails APIs and React frontends; architect and optimize PostgreSQL schemas and queries; manage Docker/Kubernetes services and Terraform IaC; implement PKI/mTLS and secure authentication; solve offline data serialization/synchronization; own CI/CD pipelines and support mission-critical field deployments.

Build and improve Rare Candy's iOS app: implement Swift/SwiftUI features, integrate with GraphQL APIs, fix bugs, raise UI polish, collaborate with product/design/backend, and grow quickly under CTO mentorship to own meaningful product areas.