Senior Software Engineer (Web App)
Senior Software Engineer (Web App) Atlanta, Georgia, United StatesSenior Software Engineer (Web App) Location: RemoteAbout OncoLensAt OncoLens, we're redefining cancer care through an innovative SaaS platform that enables multidisciplinary oncology teams to deliver personalized, evidence-based treatments to every patient. Our solutions power tumor boards, streamline care coordination, enhance clinical trial matching, and track quality measures delivering real-time insights from robust structured and unstructured data to healthcare providers and life sciences partners. Backed by premier healthcare investors, we're rapidly scaling the platform that helps clinicians make life-saving decisions every day.This is not another feature factory role. This is a chance to build and evolve the core technical foundation of a platform that directly impacts patient outcomes.The RoleWe're hiring a Senior Software Engineer to serve as a technical backbone of our platform someone who can architect systems, lead, influence, and drive engineering excellence across teams. You'll partner closely with Product, Data, Integrations, and Executive Leadership to shape platform strategy, modernize our architecture, and ensure we scale with reliability, speed, and quality.You'll own critical backend and platform initiatives, mentor engineers, guide contractors, and play a hands-on role in building the next generation of the OncoLens platform.What You Will Be DoingTechnical Strategy & ArchitectureSet and communicate technical strategy across multiple engineering teams, acting as a key liaison with integrations and data-flow teams.Lead architectural direction for core platforms and services, including:Temporal-based workflowsV1 V2 platform evolutionVertically sliced features, rich domain models, and robust automated testingEnsure reliable, high-quality data ingestion and publication to the data lake and data warehouse.Own the long-term scalability, performance, and resiliency of our distributed microservices architecture.Platform Ownership & ReliabilityOwn the design, stability, and operation of critical backend and platform systems including:Authentication & authorizationLab integrationsTBv2NAPRCV1 V2 migrationParticipate in on-call rotation and production support.Lead Datadog monitoring and alert tuning.Create and maintain engineering runbooks.Co-own multi-quarter technical roadmaps with Product.Engineering Excellence & AI AdoptionDrive organization-wide best practices in:CI/CDSDLC maturityInfrastructure as CodeDefine, champion, and safely scale the use of AI tooling across engineering workflows to improve:Code qualityDeveloper productivityTime-to-deliveryProduct & Cross-Functional LeadershipPartner with Product, Customer Success, and Executives to:Shape product direction, including AI-powered capabilitiesLead technical POCsProvide scoped estimates and architecture inputParticipate in roadmap planning and product workshopsMentorship & Team LeadershipMentor engineers across levels in:Core engineering practicesDistributed system designEffective use of AI toolingLead onboarding and ongoing success of contractor and offshore teams.Provide clear technical guidance, uphold code quality, and support performance feedback loops.Complete leadership and management training and apply those skills in daily cross-functional collaboration.Core Technologies You'll Work WithBackend: .NET Core, Node.js / NestJS, TypeScriptFrontend: React, React NativeAPIs: REST, HL7, FHIRData: MySQL, PostgreSQL, Non-relational databasesCloud: AWS, Azure, or GCPDevOps: CI/CD, Infrastructure as Code, GitMonitoring: DatadogWorkflow Orchestration: TemporalWhat You Bring5+ years of professional software engineering experience building and operating production systems.Strong expertise in backend development with modern microservice architectures.Experience building and scaling distributed systems.Deep experience with APIs, integrations, and data pipelines.Strong SQL skills and working knowledge of relational and non-relational datastores.Experience delivering cloud-native systems with Infrastructure as Code.A track record of mentoring engineers and influencing technical direction.Comfort operating in regulated environments and healthcare data ecosystems is a plus.Why This Role is DifferentInfluence platform strategy, not just ship tickets.Drive AI adoption inside real engineering workflows, not just bolt AI into the product.Work on technology that directly improves cancer treatment outcomes.Help scale a platform backed by top-tier healthcare investors.Have real ownership: architecture, reliability, long-term roadmapnot just features.Or refer someone