Top Senior Software Engineer Jobs in Indianapolis, IN

Lead front-end-focused full‑stack development for a multi‑tenant SaaS online banking platform. Build reusable component libraries, migrate legacy UI, optimize UI performance, troubleshoot across front-end and service layers, participate in on‑call rotations, mentor junior engineers, and ensure API‑first integrations and cloud‑native deployments.

Own and architect Linux kernel-space enforcement for an identity security platform using eBPF and BPF LSM hooks. Build kernel and userspace enforcement boundary, optimize syscall hot paths, extend enforcement to containers and Kubernetes, ensure portability across kernel versions, collaborate on shared policy/backend, mentor engineers, and drive production-grade, low-latency security enforcement.

Lead macOS endpoint enforcement: design and own userspace agent, synchronous allow/deny path, Network Extension content filtering, performance and stability across macOS versions and hardware, mentor engineers, and represent macOS in cross-platform policy and architecture decisions.

Own design, implementation, and production support of Windows kernel-mode enforcement drivers (filesystem, process/thread, handles, registry) and the kernel/user-mode enforcement boundary. Reduce enforcement latency at scale, extend enforcement to containers and isolation, ensure compatibility across Windows builds, handle driver signing and deployment, collaborate cross-platform on policy and the Rust userspace agent, and mentor engineers while driving technical direction and operational stability.

Design, build, ship, and maintain end-to-end product features across frontend, backend, and data layers. Own projects from definition through production, improve reliability and scalability, collaborate with product and design, mentor engineers, and engage with customers to solve real user problems.

Owner of end-to-end full-stack features with primary focus on elite Angular/TypeScript frontends. Build real-time UI components (WebSockets/SSE), enforce feature-domain driven Angular architecture, harden API integrations and auth (JWT/OpenID Connect/OAuth2), optimize performance and i18n, and develop high-concurrency backend microservices (Python/FastAPI/Django). Use autonomous coding agents to accelerate and maintain code quality.

Build and maintain Mapboxs cloud-native infrastructure and GitOps deployment platforms on AWS. Work with Terraform/Terragrunt and legacy CloudFormation/CDK, migrate services to EKS/ArgoCD, architect centralized GitHub Actions CI, configure observability (Datadog/CloudWatch), provide on-call SRE support, document designs, and lead platform strategy and developer experience improvements.

Design and build Alpaca's low-latency, high-throughput algo trading platform. Implement frontend and backend components, optimize performance, design distributed systems and data models, and develop/order and risk management systems for high availability.

The Senior Software Engineer develops software solutions for enterprise operations, collaborating with teams and ensuring standards in performance and security. Responsibilities include system design, troubleshooting, documentation, and support of payroll systems integration.

Lead architecture and roadmap for a company-wide data lakehouse platform. Build platform-as-product components (SDKs, CLIs, control planes), optimize distributed compute/storage, prototype performance R&D, ensure compliance-by-design (lineage, PII masking, access control), enable real-time AI data ingestion, drive engineering standards, and mentor cross-functional teams.

Build and maintain backend systems for a large-scale community platform: design APIs, improve performance and scalability, ship well-tested features, triage production issues, mentor engineers, and help define AI-assisted development practices and architecture.

Lead full‑stack development of complex research platforms, set technical direction and architecture, integrate data pipelines and evaluation frameworks, mentor engineers, promote AI-assisted engineering practices (e.g., Claude Code), assist hiring/onboarding, and represent technical work across teams to deliver scalable, secure software for digital safety research.

Design, implement, and own complex features and services for a large-scale CPM platform. Lead technical design, build modern UIs, design APIs and JSON/XML contracts, drive performance and reliability improvements, mentor engineers, lead code reviews, contribute to CI/CD and production support, and responsibly employ AI-assisted development tools.

Lead and mentor a team of engineers while contributing hands-on to complex features. Define architecture, drive development best practices, conduct code reviews, coordinate cross-functional requirements, and ensure timely delivery of high-quality ecommerce marketplace software.

Design, develop, and maintain scalable SaaS platform features using C#, PostgreSQL, React/TypeScript, and AWS. Lead architectural decisions, ensure code quality through testing and reviews, troubleshoot production issues, mentor engineers, collaborate with cross-functional teams, and participate in on-call incident response to maintain reliability and performance.

Lead design and delivery of agentic-first capabilities in Nexus Repository Manager: architect multi-agent subsystems, own product area execution, define verification and eval harnesses, ensure security/reliability for software supply chain features, and mentor senior engineers while coordinating cross-functional stakeholders.

Lead the long-term technical vision and architecture for ServiceTitan's iOS platform. Design scalable mobile frameworks, define data access patterns via GraphQL, champion TCA, adopt Apple platform capabilities, integrate AI-assisted developer tools, drive cross-org alignment, mentor senior engineers, and set engineering standards for code quality, performance, testing, and extensibility.

Lead end-to-end design, development, testing, deployment and production support of enterprise web applications. Own architecture, mentor teammates, translate business requirements into secure technical designs, resolve production issues, and ensure on-time delivery and cross-team communication.

Develop and maintain embedded firmware and kernel/user-mode device drivers for Ethernet-based networking devices. Design, implement, test, and integrate drivers into a Linux and AUTOSAR communication stack, build SDK components, and create debug/test utilities and automated unit/system tests for safety-critical automotive applications.

Design, develop, and maintain scalable Python applications; collaborate with cross-functional teams to deliver features; ensure performance and quality; identify and fix bugs; maintain code quality and automation; lead and mentor team members using agile practices.

Design, develop, and maintain backend platform services and APIs using Go/JS/Node/GraphQL. Lead architecture, CI/CD, and AWS-based deployments (Lambda, Fargate). Troubleshoot production issues, produce technical designs and estimates, mentor junior engineers, and drive scalable software best practices.

Lead company-wide transformation of test automation and quality engineering: define vision and roadmap, architect scalable testing frameworks across server/web/mobile/desktop, integrate AI/LLM for test generation and flakiness management, establish observability and quality gates, mentor engineers, and partner with leadership to embed quality across the SDLC.

Design, develop, and deliver scalable backend systems and components using .NET 10 and C#. Build and maintain databases and messaging infrastructure (PostgreSQL/SQL Server, RabbitMQ), deploy with Docker and AWS, apply DDD and ORMs, triage/prioritize work, and contribute to distributed, event-driven architecture with emphasis on reliability and idempotency.

Build and extend Pulumi Cloud features and SDKs, design scalable cloud systems, write production full-stack code (Angular/TypeScript, Node.js, Go), integrate LLMs/AI into products, drive roadmap and mentor engineers while focusing on security and reliability.

The Senior Software Engineer will develop full stack software using Typescript, MySQL, React, and Next.js, oversee features from conception to production, and collaborate across teams at Ethena.