Top Senior Software Engineer Jobs

Own full-stack HR Experience features from technical design through deployment and monitoring. Build maintainable frontend, backend, and data-layer solutions; participate in code reviews, planning, reliability improvements, on-call response, and incident management. Partner with product and design, mentor less-tenured engineers, and independently deliver projects with minimal oversight.

Develop, test, deploy, document, and maintain Java or C++ software for space systems supporting real-time situational awareness. Collaborate with systems, hardware, and test engineers on a small Agile team, modernize existing capabilities, work across the software development lifecycle, and take ownership of portions of the codebase. This is a full-time onsite role requiring an active TS/SCI clearance and CI polygraph eligibility.

Develop and deploy reliable, customer-facing frontend web applications using modern JavaScript and TypeScript technologies. Responsibilities include gathering requirements, implementing high-fidelity designs, researching UI/UX patterns, proposing technical solutions, testing, optimizing performance and security, and collaborating with and mentoring engineering team members.

Build and support secure, scalable cloud-native connectivity platforms using Golang and AWS. Responsibilities include architecture, API and database design, testing, deployment, observability, security, troubleshooting, performance tuning, code reviews, mentoring, and stakeholder collaboration. The role focuses on Mastercard Cloud Connect initiatives serving public cloud and private network customers.

Develop and maintain scalable control-plane software for DigitalOcean’s network products, including APIs, services, and tools. Responsibilities include implementing, testing, optimizing, and supporting reliable distributed systems; collaborating across networking teams; improving developer and customer experiences; establishing engineering best practices; and contributing to architecture, monitoring, performance, and mission-critical platform reliability.

Develop and maintain Intelerad’s Unified Storage Layer and cloud storage services for medical imaging applications. Responsibilities include designing software features, translating support and stakeholder requirements into solutions, debugging cloud infrastructure, managing Kubernetes, Terraform, AWS, and CI/CD environments, reviewing code, documenting systems, and delivering work within an Agile/Scrum team.

Lead design and deliver AI-native, cloud-native software components; develop secure high-quality production code; drive adoption of AI-assisted engineering practices, CI/CD automation, SDKs and reusable frameworks; mentor engineers and lead cross-team communities of practice.

Build and maintain authentication and fine-grained authorization systems using Auth0 and OpenFGA. Own OAuth 2.0 and OpenID Connect implementations, identity federation, token flows, and permissions for AI agents. Lead cross-team technical projects, set engineering standards, review code, and mentor engineers. The role requires strong backend development skills and experience with identity providers, ReBAC systems, and complex multi-tenant authorization models.

Build and own OpenRouter’s financial infrastructure, including flexible pricing, quote-to-cash automation, usage metering, billing, payments, collections, double-entry ledgering, provider settlements, and reconciliation. Ensure financial correctness through idempotency, auditability, anomaly detection, and access controls. Partner with Provider, Trust & Safety, Sales, Customer Success, and Finance teams to deliver scalable usage-based financial systems.

Design, build, test and operate cloud-native back-end microservices using Java. Ensure secure, scalable, reliable systems, optimize data access and performance, support production lifecycle and incident management.

Lead software engineering for secure, resilient, scalable platforms and data pipelines. Responsibilities include designing production systems, writing and reviewing code, troubleshooting, improving automation and operational stability, adopting responsible AI-assisted development practices, evaluating architectures, and building micro-frontends. The role uses distributed data platforms, orchestration, lakehouse technologies, hybrid cloud environments, backend services, and modern JavaScript or TypeScript interfaces.

Develop and maintain scalable full-stack applications using React and Python across cloud environments. Responsibilities include building ETL pipelines, integrating AI and machine learning features, developing APIs and microservices, optimizing MySQL interactions, and creating accessible user interfaces. The role involves collaboration with stakeholders, code reviews, troubleshooting, and continuous improvement in an Agile environment. Candidates need substantial software development experience, a bachelor's degree, and the ability to obtain Public Trust eligibility.

Designs and evolves AWS infrastructure as code using CDK, develops backend software primarily in TypeScript, and applies secure engineering practices for regulated environments. The role contributes to architecture, code reviews, CI/CD pipelines, production support, observability, and on-call operations. It collaborates cross-functionally, builds scalable and reusable systems, supports SOC 2 compliance, and uses AI coding assistants to improve development, testing, and documentation.

Develop and lead projects for deterministic, scalable simulation software supporting safety-critical autonomous aviation systems. Responsibilities include improving framework performance, reproducibility, flexibility, flight dynamics modeling, hardware emulation, and simulation-based testing. Collaborate with flight software, guidance, navigation and control, and hardware test teams. Support hardware-in-the-loop, high-fidelity physics simulation, and cloud-based Monte Carlo infrastructure while mentoring team members.

Design, build, and operate scalable backend services and APIs. Lead technical solutions from requirements through deployment and support, drive architecture and reliability improvements, integrate AI/ML capabilities, and optimize distributed systems for high throughput and low latency. Collaborate across teams, conduct code reviews, mentor engineers, support incident response and root-cause analysis, and promote automation, observability, security, and operational excellence.

Develop and enhance cloud-based web applications for data tracking, metrics, approval workflows, and compliant data movement. Collaborate with customers, systems engineers, and developers on requirements, design documents, demonstrations, integration, testing, and product evaluation. Participate in Agile ceremonies, manage Jira tickets, and apply software engineering standards and best practices. The role requires extensive software development experience, AWS-related certification, and an active TS/SCI clearance with current polygraph.

Own and deliver complex full-stack software features for custom labs and related applications. Design, build, test, document, and maintain APIs, databases, user interfaces, infrastructure, and libraries using C# or JavaScript/TypeScript. Lead AI-assisted development workflows, review generated code, ensure security and quality, collaborate with cross-functional Scrum teams, estimate scope, and participate in on-call support.

Leads full-stack software development using Java, Spring Boot, REST, React, and related technologies. Designs and delivers secure, accessible applications; modernizes legacy systems; establishes engineering, testing, and coding standards; leads technical design and code reviews; mentors engineers; partners with DevOps and business stakeholders; and supports CI/CD, performance, security, and application deployments.

Develop and operate full-stack applications, backend services, data pipelines, and distributed systems on AWS. Improve content quality through AI and automation, optimize CI/CD and infrastructure tooling, maintain data integrity, and mentor engineers. Collaborate with product, design, and engineering teams using Agile/Scrum to deliver scalable, user-focused features and reliable content systems.

Designs, builds, and operates scalable platform infrastructure governing access to advanced AI models. Responsibilities include configurable access programs, identity and business verification, authorization services, sensitive-data protection, cloud integrations, high availability, incident response, technical architecture, design reviews, and mentoring. The role partners with safeguards, product, design, and research teams to translate safety policies into reliable systems and launch new capabilities.

Designs, develops, integrates, tests, and operates ground software for Mars relay and deep-space communications systems. Responsibilities include Delay Tolerant Networking, customer data routing, external APIs, standards-compliant interfaces, automated and integration testing, performance tuning, stakeholder collaboration, documentation, deployment, and operational handoff.

Leads a small engineering team while designing and delivering production-grade full-stack applications. Builds React and TypeScript front ends, Python and Node.js services, GraphQL APIs, system integrations, containerized deployments, and CI/CD pipelines. Provides technical leadership, mentoring, performance management, project prioritization, observability, and secure engineering practices. Partners with business and technology stakeholders to develop scalable solutions, including LLM-integrated services and guardrails for citizen-developed applications.

Build and own customer-facing web applications using React and TypeScript, backend services with C# and .NET, and stateful AI workflows. Deliver camera-based measurement experiences from discovery through deployment, integrating with hardware and native services. Partner directly with customers and technical teams, troubleshoot across application boundaries, support Linux and offline deployments, and ensure reliable operation during interruptions, device disconnections, and resource constraints.

Lead the design, development, testing, debugging, maintenance, and improvement of full-stack software applications for merchant onboarding and client implementation platforms. Collaborate with cross-functional teams, translate requirements into technical specifications, lead code reviews, mentor junior developers, and automate application operations. The role requires cloud, database, DevOps, CI/CD, Agile, and LLM experience.

Design and build scalable backend systems for uncrewed air traffic management and shared airspace operations. Develop asynchronous pipelines, database systems, RPC handlers, regulatory and compliance software, and geospatial data services. Collaborate with frontend engineers, partners, product managers, and program managers. Investigate ambiguous technical problems, establish architectural strategy, resolve urgent production issues through on-call support, and improve platform reliability, security, and scalability.