Top Software Engineer Jobs in Indianapolis, IN

Lead architecture and evolution of Juniper Square’s distributed services, cloud infrastructure, and developer platform. Design scalable, multi-tenant, event-driven systems; build paved-road developer tooling, CI/CD, and observability. Hands-on coding, prototyping, and performance troubleshooting. Enable production AI/LLM workloads, ensure security/compliance, support enterprise upmarket needs, and mentor engineering teams to raise operational excellence and reliability.

As a Senior Software Engineer, you'll design and maintain frontend applications and reusable components, integrate APIs, mentor engineers, and ensure high-quality user experiences in the fintech space.

As a Senior Software Engineer at Flex, you'll design and maintain financial services architecture, mentor junior engineers, and ensure scalability and security for innovative financial products.

Design, develop, and administer databases and web applications for IVR and call center software. Build cloud-based integrations, write and maintain SQL, and participate in call center analytics system development and integration.

The Senior Software Engineer will architect and optimize AI-powered developer tools, enhance the SDLC, collaborate across teams, and mentor peers to improve engineering productivity.

Lead technical strategy and architecture across engineering, advise executives, de-risk early-stage ideas, and drive delivery of scalable web and mobile products. Mentor senior engineers, promote cross-team collaboration and AI adoption, partner with product and clinical stakeholders, participate in on-call rotation, and ensure systems meet standards for stability, maintainability, and scalability.

Lead backend development using C#/.NET and cloud-native technologies. Build and maintain APIs, ensure quality and performance, troubleshoot issues, conduct code reviews, and drive software/process improvements.

Lead design, implementation, and operation of production-quality DevOps platforms and automated test infrastructure for heterogeneous edge hardware. Improve CI/CD, build/release, deployment automation, developer tooling, and platform reliability. Enable reproducible tests, diagnose failures across devices, partner with engineering and QA, and drive major infrastructure initiatives from ambiguity to production.

Senior Java engineer responsible for designing, developing, and maintaining scalable, secure backend systems using Java and modern frameworks. Participate in architecture, collaborate with product and security teams, write maintainable code, and adopt AI-assisted development tools while contributing to open-source efforts.

Build and operate scalable backend services and distributed systems for global payments. Design payment orchestration, ledgering, workflow engines, partner integrations, and public APIs. Own end-to-end projects, influence architecture and engineering standards, mentor teammates, and collaborate with product and engineering leadership to ship production-grade infrastructure.

Design and build scalable backend services and distributed systems powering global payments. Develop payment orchestration, ledgering, workflow engines, partner integrations, and public APIs. Influence architecture, own projects end-to-end, collaborate with product, mentor engineers, and operate production systems.

Design, architect, and implement cloud-first full-stack software using Java/C# and JavaScript frameworks. Provide technical leadership, mentor engineers, improve architecture and performance, promote CI and automated testing, and support customer implementation and cloud platform operations.

Design, build, and own disposable isolated microVM sandboxes and related runtime infrastructure for AI coding agents. Improve reliability, performance, and security across macOS, Windows, and Linux; lead architecture, mentor engineers, engage open-source communities, participate in on-call rotations, and collaborate with Product and adjacent teams.

Lead design, build, and operation of AI-powered product features across backend, frontend, and AI systems. Make architecture decisions, drive production deployments, improve code quality and reliability, mentor engineers, and own features end-to-end.

Provide technical leadership and hands-on engineering across AI, data, backend, and frontend systems. Drive architecture, remove technical risks, set engineering standards, mentor senior engineers, and influence cross-team technical direction.

Lead company-level technical direction for an AI-native insurance platform. Own architecture across AI, data, infrastructure, and product; resolve high-impact technical decisions; establish org-wide engineering standards; and mentor senior engineers while partnering with founders to shape long-term technical vision.

Lead architecture and implementation to scale a large Kubernetes-native microservice platform into cell-based deployments. Decompose services, build shared libraries and configuration frameworks, enable private/isolated cloud deployments, land changes in product services, set architecture patterns, partner with Cloud Platform/SRE/DevEx, mentor senior engineers, and embed AI tooling into development workflows.

The Senior Software Engineer will build GPU-accelerated compute platforms for AI workloads, focusing on orchestration, resource management, and performance optimization.

Build and implement a software-defined networking platform for high-performance AI workloads, ensuring network isolation and high-speed connectivity for research and infrastructure teams.

This role involves designing and implementing infrastructure systems for AI workloads, focusing on orchestration, automation, APIs, and compliance in a cloud-native environment. Collaboration across teams is essential for project success.

Design, build, and maintain cloud-native applications using .NET and React. Develop backend services, APIs, and front-end interfaces while ensuring system stability and scalability. Collaborate across teams to improve healthcare solutions through software and AI-powered tools.

As a Senior Software Engineer, you'll design and build scalable market data systems, improve API architecture, and enhance overall system performance, contributing to Alpaca's infrastructure for trading financial assets.

Develop high-reliability software for safety-critical applications in UAS technology. Collaborate with teams, maintain solutions, and automate processes.

As a Senior Software Engineer, you will design and develop user-facing products and back-office tools while collaborating with diverse teams to solve complex problems with innovative solutions.

The role involves owning the email channel's infrastructure, developing frontend experiences, designing backend systems, and ensuring deliverability in a cloud-native environment.