Top Senior Software Engineer Jobs

Design, develop, and maintain full-stack web applications and scalable backend services for a DoD/IC Training Data Storefront. Implement responsive frontends, Python-based APIs, containerized deployments on AWS, and ensure performance, security, and test coverage while collaborating in an Agile team.

Design and implement advanced digital signal processing and machine learning algorithms for radar, EW, SIGINT, and RF geolocation; prototype and transition DSP/ML models to real-time, field-ready software across on‑premises and cloud environments in support of US intelligence and defense missions.

Build and maintain Python-based services and internal tools to support verification, validation, testing, and evaluation workflows for DoD and Intel missions. Design scalable, testable software systems, collaborate on architecture and observability, support containerized deployments and CI/CD automation, and mentor engineering teammates in mission-critical environments.

Build and maintain backend and infrastructure software for ground navigation: control plane, workflow orchestration, databases, product repositories, ingestion pipelines, observability, CI/CD, and operator tools. Integrate orbit determination, telemetry, reference data, and validation into repeatable per-spacecraft workflows and collaborate with astrodynamics, flight software, mission operations, and systems teams to operationalize navigation products.

Design, develop, test, and deliver complex software systems. Lead small teams, mentor junior engineers, participate in architecture decisions, conduct code reviews, and integrate AI and cloud solutions into products.

Own and maintain the core application suite including ASP.NET MVC apps, manage SQL Server databases, administer Azure production environments, troubleshoot and deploy patches, and drive incremental modernization and performance/security improvements across development, staging, and production.

The role involves developing and optimizing core components of the Flow blockchain protocol, focusing on performance, scalability, and reliability, while also ensuring interoperability with the web3 ecosystem.

Develop R&D and production software for next-generation radar products, integrate software with COTS hardware, support deployed capabilities for U.S. and international customers, and work on-site with engineering teams to advance product features and reliability.

Design, build, and ship end-to-end product features focused on search and ranking. Improve profile search via new filters, data sources, and LLM-based features (including fine-tuning and feedback loops). Collaborate with founders, move quickly, own projects, and work across Next.js/React, Node.js, OpenSearch, AWS, SQS, and Spark.

Design, implement, and maintain production-grade Python services and internal tools; lead technical design for scalable, available cloud/containerized systems; mentor junior engineers; support DevSecOps, testing, security, observability; adopt AI-assisted workflows and contribute to AI/ML or data-driven systems when applicable.

As a Senior/Staff Software Engineer, you will lead web application development and integrations, mentor engineers, and ensure high-quality project delivery.

Build and own end-to-end features across a cloud-native B2B SaaS platform: backend APIs, database schemas, React frontends, integrations with payer/EHR/pharmacy systems, AI/LLM-driven automation, and HIPAA-compliant AWS infrastructure. Contribute to architecture, CI/CD, and product-focused technical decisions.

Design, develop, and test complex software systems; lead small teams and mentor junior engineers; participate in architecture, conduct code reviews, and ensure high-quality delivery with cloud and AI integrations.

Design, develop, test, and deliver complex software systems. Lead small teams, mentor junior engineers, participate in architecture decisions, conduct code reviews, and integrate AI and cloud-based solutions while ensuring code quality and collaboration with product, design, and cross-functional teams.

As a Staff Software Engineer, you'll architect and build foundational platform services, focusing on data infrastructure, healthcare interoperability, and secure APIs while mentoring other engineers.

Design, architect, and deliver scalable full-stack web features; own complex systems end-to-end; mentor engineers; deploy and manage cloud-based, containerized applications; maintain high code quality and excellent user experience while collaborating with product.

Lead design, development, and operation of large-scale data pipelines (ingest, transform, cluster, publish). Define pipeline architecture, ETL, data quality, and indexing strategies; set engineering standards, mentor engineers, troubleshoot production issues, and champion agile practices and AI-assisted tooling while maintaining security and data governance.

Architect and build a scalable software and controls platform connecting illumination hardware, firmware, cloud infrastructure, and internal tooling. Define interfaces, communication layers, and subsystem boundaries; collaborate with firmware, hardware, data, and bioprocess teams; establish engineering practices, deploy cloud-connected services, and contribute hands-on across the stack while shaping long-term technical direction.

Lead engineering role focused on building internal tools and client-facing products for real estate advisory, utilizing AI and modern technology stacks.

The Senior Software Engineer will design scalable Node.js and TypeScript systems, mentor junior engineers, and improve architectural patterns for resilience in a fast-paced environment.

As a Senior Full Stack Software Engineer, you'll design large-scale UI systems, mentor teammates, solve complex front-end issues, and integrate AI tools, significantly impacting EverQuote's B2B platform and user experience.

Join the ApartmentIQ team as a Senior Software Engineer to develop and enhance a platform for property management, focusing on user experience and feature deployment.

Design and implement APIs for web self-service platforms using .NET Core and C#. Collaborate with technical teams, ensure compliance with policies, and lead code reviews.

The Lead Software Engineer will design and maintain full-stack applications, focusing on Next.js, manage API integrations, collaborate with teams, and enhance software quality through testing and mentorship.