Top Senior Software Engineer Jobs in Indianapolis, IN

Design, build, and maintain scalable backend services in C#/.NET powering payment routing, connector management, and platform configuration. Build secure, observable APIs and high-volume transaction processing systems, collaborate across Product/AI/Engineering, mentor junior engineers, drive architecture and standards, and own full lifecycle from requirements to deployment.

Build, operate, and scale core data services and APIs to process, store, and deliver large-scale patient health records with low latency and high availability. Provide technical leadership, contribute to architecture and design, collaborate with product and engineering teams, and coach engineers.

Lead delivery of high-complexity digital banking implementations: design and build Java Spring Boot microservices, REST APIs, cloud-native containerized deployments, data and DB migrations, event streaming, monitoring and performance optimization. Act as a customer-facing technical lead conducting code reviews, test strategies, and cross-functional coordination to resolve operational issues.

Join an early engineering hire at a growing SaaS platform for online communities. Scope and deliver new features, write modular TypeScript/React code, enable AI coding agents, monitor production, and troubleshoot issues while influencing product direction and improving platform scalability and developer experience.

Build and operate internal APIs and delivery systems for Data Science solutions. Implement deployment, security, auth, and observability; support integrations; runbooks and documentation; participate in on-call rotations, incident response, and post-incident improvements; provide code reviews and mentorship; design solutions on cloud, Kubernetes, and LLM-enabled infrastructure.

Lead design, development, testing, deployment, and support of cloud-based software products. Provide technical leadership and mentorship, translate feature requirements into implementation tasks, ensure quality (tests, performance, security), resolve technical risks and defects, and collaborate with stakeholders to deliver scalable microservices and AI-integrated features.

The Staff Software Engineer will lead AI integration into software design, develop scalable systems, and mentor other engineers while improving best practices.

Lead remote engineering teams to design, architect, and deliver scalable, high-availability education technology platforms focused on content systems, workflows, and GenAI. Drive product and technical strategy, collaborate with product/design, implement cloud-native architectures, adopt agile practices, measure performance through data and testing, and continuously improve user engagement and platform reliability.

The Senior Software Engineer will design and build fullstack features using Go, React, and Ember, ensuring optimal customer experiences and system scalability while mentoring peers and driving projects.

The Software Development Engineer II will develop navigation solutions, balance rapid development with reliability, and optimize performance while promoting operational excellence at Mapbox.

Lead the quality engineering efforts for Replicant's AI platform by defining standards, improving testing strategies, and mentoring a QA team to ensure high-quality outputs across software systems.

The Senior Software Developer will design and develop web and mobile applications, collaborate with scientists, implement APIs, and mentor developers.

The Senior Software Engineer will work on full-stack deliverables, manage support tickets, and enhance the tech stack for improved efficiency, focusing on analytics and automation in OOH advertising.

As a Senior Software Engineer, you will lead your team in delivering features according to specifications, ensuring scalable technical decisions, and mentoring team members.

Design and evolve systems for Motion's infrastructure, focusing on reliable and secure operations across APIs, Linux systems, and cloud environments with a focus on hands-on coding and engineering judgment.

Design and implement scalable frontend solutions using JavaScript/TypeScript and React. Drive architecture discussions, ship features with minimal guidance, maintain code quality and styling standards, collaborate across agile teams, ensure performance and scalability, and manage end-to-end feature lifecycles in a fast-moving environment.

The Senior Backend Engineer will design and build backend systems for a multi-cloud platform, ensuring performance, scalability, and high quality while collaborating with various teams and stakeholders.

Perform systems and software engineering tasks including analysis, design, development, testing, integration, debugging, and documentation. Support API-driven, low-code/no-code BPMN-based automation platforms (Appian, Salesforce, Nintex) with SQL Server and .NET, collaborate with Agile teams, and maintain secure remote work practices for CUI-bearing government projects.

Design and implement AI-powered educational software, focusing on generative AI systems, mentor peers, and ensure scalable, secure architecture.

As a Senior DevOps Engineer at Scribe, you will design and optimize AWS cloud infrastructure, manage CI/CD pipelines, and support product development while ensuring reliability and performance of services.

Develop and maintain language frontends for the Joern platform for automated software vulnerability analysis, collaborating with a global team.

Design and own AI-agent-driven test workflows and the automated verification framework. Build test context, select models and tooling, validate AI-generated code and tests, operate test automation across UI/API/mobile/data, ensure security and compliance, mentor teams, and continuously improve agent orchestration and observability.

Lead architecture and development of high-performance, scalable backend systems for Yahoo Mail using Java and C++. Set technical strategy, establish architectural standards, validate AI-generated code, mentor senior engineers, collaborate cross-functionally, and ensure reliability through automated logging, telemetry, and debugging workflows.

Extend and harden Ocient's native geospatial engine: implement and optimize 120+ spatial functions, ensure spherical/geodetic numerical correctness, improve spatial indexing and query performance at trillion-row scale, deepen spatiotemporal operators (trajectory/interpolation), integrate geospatial features with the analytical engine, and produce design docs, tests, and benchmarks.

Lead design and delivery of cloud-native, distributed full‑stack systems; own end-to-end projects and incident response; mentor engineers; write ADRs and RFCs; optimize performance and apply secure SDLC and AI‑augmented development practices.