Senior Applications Developer

The Information Technology Department of Arnold & Porter has an opening for a Senior Applications Developer. This role may work in one of our U.S. offices or 100% virtual/remote in a firm approved U.S. state. The Senior Applications Developer designs, builds, and supports business-critical applications and integrations that power the Firm’s operational and legal support functions. This role combines full-stack development, cloud architecture, data engineering, and responsible AI to modernize systems and improve efficiency while protecting confidentiality and meeting regulatory requirements.

The role focuses on modernizing legacy platforms, building secure APIs and integrations, automating workflows across Microsoft 365 and Power Platform, and enabling AI capabilities (e.g., RAG, copilots, intelligent search) across HR/Recruiting, Finance/Accounting, and other firmwide systems.

• Own and evolve business applications with a product mindset: requirements gathering, solution design, roadmaps, and backlog management.
• Design and build modern web applications, APIs, microservices, and event-driven integrations using .NET, Type Script/React, and Azure.
• Lead AI enablement using Azure OpenAI or similar services, including RAG, prompt design, evaluation, and guardrails.
• Integrate Microsoft 365, SharePoint Online, Microsoft Graph, Teams, and Power Platform solutions.
• Maintain and enhance HR/Recruiting and Finance/Accounting systems and integrations, ensuring data accuracy, security, and auditability.
• Design and operate data pipelines and governed datasets for reporting and analytics (Power BI).
• Implement security, compliance, and identity standards (Entra , OAuth/OIDC, Key Vault, DLP, logging, auditing).
• Establish reliability and Dev Ops practices, including CI/CD, infrastructure as code, observability, and incident management.
• Manage vendors, platforms, documentation, training, and provide high-quality client service and escalated support.
• Design and administer relational and No
  
  SQL databases, including support for AI vector search workloads.

• Bachelor’s degree in Computer Science or related field, or equivalent experience.
• 10+ years of experience secure, scalable enterprise applications; professional services or law firm experience preferred.
• Strong experience with cloud-first architectures, APIs, integrations, databases, and production AI features.
• Proven ability to work with highly confidential data under strict governance and change controls.
• Core technologies: C#/.NET, ASP.NET Core, Type Script, React/Next.js, REST/Graph
  
  QL, Power Shell;
  Python a plus.
• Azure experience preferred (App Service, Functions, API Management, Service Bus, Azure SQL, Key Vault); AWS familiarity helpful.
• Microsoft 365, Power Platform, SQL Server/Azure SQL, Postgre
  
  SQL, Power BI, Azure Data Factory/Synapse.
• AI/ML experience with Azure OpenAI or similar LLM platforms, including RAG and safety controls.
• Dev Ops, CI/CD, containers, Kubernetes/AKS, infrastructure as code.
• Strong judgment, problem-solving skills, communication, and a demonstrated commitment to client service and confidentiality.

The anticipated base salary for this position is $139,440 to $174,300. The actual base salary offered will depend on a variety of factors, including without limitation, the qualifications of the individual applicant for the position, years of relevant experience, level of education attained, certifications or other professional licenses held, and if applicable, the location in which the applicant lives and/or from which they will be performing the job.

For benefits information, please :

The firm may provide a discretionary bonus annually.

Arnold & Porter is an equal opportunity employer that does not discriminate on the basis of race, color, creed, religion, national origin, sex, pregnancy and childbirth (including breastfeeding and related medical conditions), age, marital or partnership status, familial status, sexual orientation, gender, gender identity, gender expression, transgender, physical or mental disability, medical condition, family leave status, citizenship status, immigration status, ancestry, genetic information,…