Top Senior C# Jobs in Atlanta, GA

Designs, develops, tests, maintains, and supports secure, scalable software and cloud infrastructure. Responsibilities include microservices, APIs, databases, asynchronous processing, automated testing, CI/CD, observability, production incident response, Agile delivery, and senior-level technical ownership. The role collaborates cross-functionally, decomposes work, improves engineering standards, and may participate in rotating on-call support.

Designs, develops, secures, deploys, and supports enterprise APIs and full-stack applications using Broadcom Layer 7 API Gateway, .NET, C#, Java, REST, SOAP, and microservices. Integrates APIs with enterprise systems and identity platforms, troubleshoots applications across diverse hosting environments, and optimizes API performance. Collaborates with cross-functional teams to onboard APIs and support SDLC workflows in mission-critical environments.

Designs, develops, tests, and supports enterprise integrations for Finance Transformation initiatives. Builds APIs, ETL processes, database solutions, and interfaces between Oracle, Workday, financial, HR, and other enterprise systems. Responsibilities include data mapping, validation, reconciliation, troubleshooting, production support, documentation, code reviews, system upgrades, and automation. The role collaborates with Finance, Accounting, HR, IT, and Enterprise Architecture teams to deliver scalable integration solutions and improve data quality and operational efficiency.

Designs and delivers cloud-based software solutions with strategic customers and Microsoft product teams. Leads requirements definition, architecture, dependency identification, design documentation, and development of maintainable code. Mentors engineers, contributes to open-source assets, coordinates project and release plans, and serves as a designated responsible individual for system reliability, monitoring, on-call support, performance, and operational improvements.

Designs, develops, tests, operates, and maintains secure, scalable software and cloud infrastructure. Works across teams to translate business requirements into resilient systems using modern software architecture, APIs, databases, messaging, automated testing, and CI/CD. Provides production support, observability, incident response, technical ownership, and mentorship while applying Agile practices and raising engineering standards. The role may include rotating after-hours on-call support.

Design, develop, and maintain scalable, cloud-native Java/J2EE services and APIs for equity investments. Collaborate with business and engineering teams to document requirements, implement multi-threaded solutions, create tests, perform code reviews, mentor junior engineers, and apply CI/CD and agile practices to deliver high-quality financial software.

Designs and implements scalable software solutions, translates client requirements into technical designs, writes and reviews code, solves complex development and support problems, estimates tasks, collaborates with clients and stakeholders, improves development processes, and mentors developers. Requires experience with C#, web technologies, REST APIs, relational databases, Git, Agile methodologies, and Jira or Azure DevOps.

Leads the AI-assisted modernization of a legacy lending platform into .NET microservices on Azure and Kubernetes. Owns the rebuild roadmap, agent workflows, prompts, testing standards, code review, compliance coordination, delivery metrics, and AI tool governance. Coaches engineers, documents legacy business rules, and ensures generated code meets rigorous quality, security, data-isolation, and regulatory requirements.

Develop and maintain scalable automation frameworks for web, API, mobile, and microservices applications. Automate UI, API, end-to-end, regression, and performance testing; build CI/CD test pipelines; troubleshoot defects; improve test coverage; collaborate with developers; and mentor junior QA engineers. The role requires strong programming, REST API, SQL, debugging, and software quality expertise.

Designs, develops, deploys, and supports enterprise-grade web applications and distributed systems using Microsoft technologies. Responsibilities include full-stack implementation, architecture, API development, responsive front-end applications, cloud integration, code reviews, debugging, performance optimization, and production support. The role requires expertise in C#, .NET Core, ASP.NET Web API, JavaScript frameworks, SQL Server, CI/CD, Git, and Azure or AWS, with preferred experience in microservices, containers, distributed systems, and automated testing.

Design, develop, test, secure, and operate large-scale distributed software services. Responsibilities include system and code reviews, improving reliability and monitoring, expanding test coverage, troubleshooting live-site issues, optimizing automation, and collaborating with product and engineering teams to deliver customer-focused solutions.

Design, develop, deploy, and support secure, scalable cloud-native applications using .NET, C#, Angular, Azure, and SQL Server. Build APIs, backend services, integrations, and user interfaces; optimize databases and application performance; troubleshoot production issues; apply enterprise security practices; and support the full software lifecycle. The role also establishes technical standards, mentors developers, collaborates with cross-functional teams, and uses AI-assisted development tools to improve productivity, testing, documentation, and code quality.

Leads architecture and modernization of large-scale, multi-tenant SaaS platforms built on Azure and .NET. Designs distributed, cloud-native systems, microservices, security, observability, resiliency, CI/CD, automated testing, and infrastructure as code. Establishes architectural governance, performance standards, and compliance practices while mentoring engineering teams and integrating AI/ML capabilities. The role drives monolith decomposition, technical debt reduction, deployment improvements, incident reduction, and platform scalability for global consumer-facing products.

Leads the design, development, integration, testing, deployment, governance, and support of enterprise Dynamics 365 and Power Platform solutions. Provides architecture guidance, production escalation support, secure coding, observability, disaster recovery, and technical leadership. Mentors developers, reviews designs and code, establishes development standards, evaluates vendors and emerging technologies, and leads complex projects involving Azure integrations, Dataverse, APIs, and Microsoft technologies.

Lead design and build of production-ready cloud and AI systems, prioritize security and reliability, ship solutions quickly using modern engineering practices, collaborate with cross-functional teams, mentor engineers, drive customer adoption, and deliver reusable assets and end-to-end complex deliveries.

Design, build, test, secure, and maintain full-stack production applications supporting analytics, reporting, and procurement tools. Collaborate on architecture, cloud integrations, authentication, CI/CD, and enterprise systems. Review and validate AI-generated code, resolve production issues, document technical decisions, and uphold engineering standards through code reviews, testing, and secure development practices.

Designs, builds, and maintains full-stack applications, data pipelines, integrations, and AI assistant tooling. Owns software architecture, security design, authentication, testing, CI/CD, and production reliability. Uses and governs AI-assisted development tools, builds MCP servers, reviews generated code, and establishes engineering standards. The role also involves troubleshooting complex issues, documenting technical decisions, collaborating with stakeholders, and mentoring engineers.

Design, develop, customize and maintain enterprise Sitecore solutions (versions 9/10, SXA, JSS, XM Cloud). Produce technical specs, implement components, test and debug in test and production, support teammates, perform demos to customers, and escalate/resolve issues.

Lead the design, development, testing, and implementation of backend applications and APIs for Fiserv’s Finxact banking platform using Golang and related technologies. Collaborate with cross-functional teams, improve code quality and test coverage, conduct peer reviews, troubleshoot applications, and mentor junior developers. The role also involves translating business requirements into technical solutions and supporting cloud-based SaaS implementations.

Develop and maintain full-stack web applications and RESTful APIs using React, JavaScript, backend languages, and data platforms. Partner with clients and internal teams to design analytical solutions, optimize performance, troubleshoot issues, conduct code reviews, and document systems. Work independently on consulting engagements, manage workstreams or small teams, support business development, and apply modern engineering, cloud, CI/CD, testing, security, and observability practices.

Design and develop cloud-native payment services, APIs, and microservices using C#/.NET and Azure. Build resilient, secure, event-driven systems with Azure SQL, Cosmos DB, Redis, Service Bus, and Event Hubs. Apply specification-driven and AI-assisted development, validate generated code, implement automated testing, and troubleshoot production systems using observability tools. Collaborate across product, architecture, QA, security, and infrastructure teams while modernizing high-volume payment platforms.

Lead the design, development, testing, debugging, maintenance, and improvement of full-stack software applications for merchant onboarding and client implementation platforms. Collaborate with cross-functional teams, translate requirements into technical specifications, lead code reviews, mentor junior developers, and automate application operations. The role requires cloud, database, DevOps, CI/CD, Agile, and LLM experience.

Design, build, test, and operate production-grade, secure, and scalable software and services. Partner with customers to translate requirements into technical designs, drive engineering best practices (CI/CD, testing, observability), deliver end-to-end solutions, lead technical workstreams, and apply AI/LLM approaches where appropriate to produce production-ready outcomes.

Designs, develops, and optimizes Dynamics 365, Dataverse, and Power Platform marketing technology solutions. Responsibilities include creating plugins, workflows, integrations, and automation; managing ALM, deployments, releases, data governance, and technical documentation; enforcing coding and quality standards; troubleshooting performance and stability issues; translating business requirements into scalable solutions; and mentoring junior developers.

Build and maintain reliable, scalable, observable software systems supporting 24/7 warehouse automation. Responsibilities include designing complex solutions, developing public APIs, troubleshooting performance issues, conducting code reviews, documenting systems, mentoring engineers, collaborating on cloud architecture and deployments, and establishing service-level objectives and indicators.