Top Senior Software Engineer Jobs

Design and improve RESTful and event-driven payment APIs and reconciliation/settlement pipelines for ACH, card, and check processing. Define architecture standards, drive cloud-native, high-availability, and event-driven designs, enforce security and compliance (PCI/NACHA/Check21), improve CI/CD and observability, guide distributed teams through reviews and documentation, and collaborate with product and partners to deliver scalable, resilient payment platforms.

The Lead Software Engineer will mentor a frontend team while actively contributing to development, focusing on quality and collaboration with product and design partners.

The Staff Software Engineer will lead the evolution of Slickdeals' data engineering ecosystem by architecting scalable platforms, maintaining data workflows, and mentoring engineers in a collaborative environment.

Lead evolution of frontend foundations: improve React/TypeScript/Vite infrastructure, developer automation, testing and CI/CD pipelines, observability, and platform tooling to accelerate product teams and developer experience.

Lead full‑stack development of web applications using C#, ASP.NET (Web Forms or MVC), HTML, CSS, and JavaScript libraries. Code, test, integrate, and document solutions; mentor teams; design complex systems; work with databases (preferred MongoDB) and deploy to web servers (preferred IIS).

Design, develop, test, and maintain Java-based enterprise billing microservices. Integrate with internal/external systems and payment gateways, participate in architecture and code reviews, enforce security best practices, and collaborate with PM, Design, and QA in an Agile environment.

The Senior Software Engineer I will develop full-stack software solutions for Rocket Lab's Manufacturing Execution System (MES), improving operational efficiency and integrating tools with the ERP system.

The Staff Software Engineer role involves developing web APIs, leading a scrum team, and implementing scalable applications while ensuring high performance and quality in software development.

As a Principal Software Engineer, you'll drive the technical vision for automation frameworks, collaborate across teams, mentor others, and enhance quality standards.

As a Staff Software Engineer, you'll develop features for the Riot Client using web technologies, provide technical leadership, and mentor other engineers to enhance player experience and facilitate cross-team collaboration.

As a Senior Software Engineer at SmithRx, you will design, develop, and maintain back-end architecture for our product suite using various programming languages, collaborate with stakeholders, ensure high-quality software, and mentor junior team members.

Design and build core parts of Amplitude's query/compute engine and compute API. Evolve semantic data models, improve query planning/execution performance and scalability, integrate non-event data, and partner with cross-functional teams to deliver end-to-end projects.

Lead design and development of Amplitude's core iOS SDKs (Analytics, Session Replay), set technical direction and cross-SDK architecture, improve performance, reliability, and developer experience, design stable public APIs and shared infrastructure, collaborate with Product and Support, and lead cross-team technical decisions, testing, documentation, and tooling.

Design, architect, and build scalable full-stack software (booking, forms, payments) across product areas. Own cross-functional projects end-to-end, partner with engineering leaders and product managers, and solve high-impact problems while communicating technical work to stakeholders.

Design and implement idiomatic Python APIs and bindings for CUDA Core Libraries, develop and integrate native C/C++ components, define interoperability boundaries (Python, C/C++, Rust), optimize performance, own feature lifecycle (design through maintenance), and collaborate with compiler, runtime, and user teams to ensure correctness, usability, and performance.

The Senior Software Engineer will build and optimize CUDA kernels for molecular dynamics simulations, deliver core simulation software, and collaborate with teams to implement new algorithms.

As a Senior Staff Software Engineer, you will scale systems, build EHR integrations, manage cross-functional projects, and drive engineering goals.

Looking for a staff software engineer to develop the Billing Platform, ensuring data integrity in revenue mechanisms while collaborating with cross-functional teams.

The Senior Software Engineer will develop multi-agent frameworks, enhance the software development lifecycle, and collaborate on AI-driven tools to improve engineering workflows.

As a Senior or Staff Software Engineer on the Localization team, you will design algorithms for state estimation systems, optimizing multi-sensor data fusion for real-time vehicle localization in autonomous driving.

The Senior Software Engineer will design and enhance the performance and scalability of the simulation for autonomous driving, collaborating with engineers and focusing on long-term architecture.

As a Senior Software Engineer on the Mapping team, you will architect and develop robust, scalable systems for autonomous vehicle mapping, collaborating with multidisciplinary experts and handling complex data processing.

As a Senior Backend Engineer, you will enhance Postscript's Fondue product by architecting scalable systems, driving decoupling, and implementing AI-first development practices while collaborating across teams.

Lead and mentor engineers to design, build, and scale customizable SaaS solutions for Procore's Custom Fields. Establish development standards, conduct code reviews, collaborate with Product/UX, and drive large initiatives. Build and improve CI/CD, monitoring, and platform infrastructure while leveraging AI-assisted development workflows to increase delivery speed and quality.

Design, develop, and model mission‑critical ground software for space systems. Integrate mission‑planning workflows and operational constraints, debug and integrate large distributed systems, lead task management and mentor team members, and create modular, reusable software architectures while performing software design and modeling analysis.