Top Senior Software Engineer Jobs

Designs, develops, tests, documents, and supports clinical software for report generation and template capabilities in a regulated production environment. Leads technical delivery and architecture discussions, performs code reviews, maintains automated testing and observability, participates in incident response, documents change-control evidence, automates operational work, mentors engineers, and drives technical-debt remediation. The role uses AI-assisted development while maintaining FDA and SOX compliance standards.

The Full Stack Software Engineer will design and maintain backend microservices, frontend applications, and C++ edge processing systems, ensuring scalability and reliability.

Own and deliver a slice of the renter onboarding application: design, develop, QA, deploy, and maintain features. Collaborate with product, design, operations, and analytics, ensure data and process integrity, communicate risks, and improve user experience and team processes.

The Software Engineer will develop AI-powered cybersecurity products, iterating based on feedback, collaborating with research teams, and engaging with customers to inform product development.

Design, build, and operate scalable, highly concurrent backend services in Go. Architect distributed, fault-tolerant systems, optimize performance and reliability, define APIs and service boundaries, improve observability and operational readiness, and collaborate cross-functionally to support mission-critical autonomous deployments.

Design and develop Unity Editor features and workflows for streaming Linux and browser-based platform configurations. Profile and optimize WebGPU and WebAssembly performance, including load times, memory management, and runtime efficiency. Investigate and resolve platform bugs, contribute to automated testing and code reviews, and collaborate with global R&D teams to deliver stable, scalable, cross-platform support.

Build and operate Helios’s acquisition and document-processing infrastructure, including web crawlers, connectors, fault-tolerant pipelines, multilingual document and media processing, OCR, extraction, enrichment, provenance, replay, and backfills. Scale secure CPU/GPU inference systems across cloud and restricted environments. Develop real-time multilingual audio intelligence pipelines with transcription, speaker attribution, timestamp alignment, and tone analysis while maintaining reliability, observability, cost efficiency, and data quality.

Own Helios’s hybrid information retrieval and temporal memory systems end to end. Responsibilities include index design, lexical and vector retrieval, ranking and reranking, query understanding, entity resolution, federated search, temporal versioning, authorization-aware retrieval, multimodal search, relevance evaluation, observability, reliability, and production performance across large data corpora.

Design and build cloud cost-management capabilities, including forecasting, anomaly alerts, cost allocation, data pipelines, transformation models, visualizations, and reusable UI components. Own features end to end from planning through release while improving application reliability and performance. Collaborate closely with engineers and founding team members, contribute to technical design and roadmap decisions, and work pragmatically in a fast-moving distributed startup environment.

Provides hands-on technical leadership across two development teams, owning software architecture, implementation, cloud operations, production reliability, engineering quality, and technical direction. Designs and delivers secure, maintainable systems; establishes testing, CI/CD, and code-review standards; leads incident response; evaluates AI-enabled solutions; mentors developers; and communicates technical risks and tradeoffs to varied stakeholders.

Build and operate reliable, scalable backend services and infrastructure for Duolingo’s advertising systems. Responsibilities include collaborating with product, design, data science, machine learning, and ad operations; designing, developing, releasing, and maintaining backend systems; and owning project priorities and milestones through production. The role requires strong backend fundamentals, systems thinking, and experience with Java, Python, or Kotlin and database technologies.

Develops and manages software applications for FACTS Financial Aid Management. Responsibilities include defining requirements with Product and Engineering, writing and testing code, reviewing pull requests, using AI coding tools, and mentoring engineers. The role works primarily within a .NET and Angular technology stack, collaborates with global teams, and contributes to new products and features.

Design and maintain the core AI infrastructure, lead product initiatives, and ensure high-quality code while mentoring a team of engineers.

Design, implement, and support high-performance storage and query infrastructure handling billions of events. Independently scope and deliver complex projects, optimize query performance, improve reliability, participate in on-call rotations, define KPIs and SLOs, reduce operational toil, debug production issues, collaborate cross-functionally, and mentor engineers.

Lead development of Luminai’s core platform, including shared frameworks, developer tooling, CI/CD, test infrastructure, observability, reliability, and IDE improvements. Architect high-performance backend systems, remove engineering bottlenecks, and establish secure defaults for authentication, authorization, and secrets management. Drive foundational technical initiatives and improve developer experience across the engineering organization.

Design, build, and maintain Luminai’s core platform infrastructure, backend services, shared libraries, internal APIs, and deployment systems. Lead projects that improve scalability, reliability, developer workflows, CI/CD, testing, and local development. Strengthen production systems through secure authentication, access controls, secrets management, code review, testing, and maintainable engineering practices.

Build scalable APIs, frontend UIs, container-based applications, and event-sourced systems for hospital operations. The role involves developing new products, automating operational escalations, contributing across the technology stack, and taking ownership of solutions within a small product-focused team.

Develop open source SDKs, enterprise APIs, UIs, and backend systems supporting large-scale computer vision datasets. Build scalable, maintainable, performant, and well-tested software for unstructured data and AI workflows. Contribute to enterprise deployments across customer clouds and on-premises environments, while improving tooling, automation, engineering practices, and open source community initiatives in a remote-first team.

The Senior Software Engineer will design, implement, and maintain software for unmanned maritime vehicles, participating in all software product lifecycle stages and collaborating with engineering teams.

Senior Software Engineer responsible for full SDLC support of mission-critical federal payroll and financial systems. Duties include designing, developing, testing, maintaining COBOL applications on IBM z/OS, resolving production and batch failures, supporting releases and configuration management, and collaborating with cross-functional teams.

Lead design and delivery of Braven's platform, tools, and automation. Scope and implement full-stack initiatives (Python/Rails, frontend, databases), improve architecture, mentor engineers, champion testing and observability, collaborate with cross-functional teams, and apply AI/automation to scale programs. Hybrid role based in Chicago or Newark.

Design, implement, document, and maintain new and existing software systems. Provide technical support and mentorship to team members, enforce code quality, apply advanced algorithms and data structures, and use software design best practices and development tools to deliver solutions on schedule.

Lead backend-focused, full-stack engineering: design and operate scalable, low-latency, event-driven healthcare data platform. Drive architecture, mentor engineers, own reliability/security, ship end-to-end projects, improve developer experience, and act as team lead while staying hands-on.

Own and improve core backend systems and infrastructure: build reliable, scalable services, improve observability and CI/CD, operate production systems, design APIs and data layers, lead technical decisions, mentor engineers, and partner with product to ship end-to-end features.

Lead and architect large, cross-team technical initiatives across backend, mobile, and web platforms. Shape technical strategy, set standards for quality and security, mentor engineers, and influence engineering and product leadership toward scalable system designs.