Top Senior Software Engineer Jobs

Designs and develops scalable software across IoT, web, mobile, backend, and AI product teams. Responsibilities include architecting features, writing Elixir, React, and React Native code, building REST and GraphQL APIs, integrating hardware, optimizing high-volume event systems, refactoring legacy systems, conducting code reviews, mentoring engineers, and delivering secure, maintainable solutions.

Lead the design, implementation, and delivery of Box AI chat and agentic experiences across web and mobile applications. Focus primarily on React and React Native frontend architecture, while collaborating with backend engineers on APIs, interfaces, and delivery milestones. Shape product requirements, establish cross-platform development standards, review code, ensure accessibility and performance, monitor evolving AI capabilities, and participate in on-call support.

Own the multi-year networking software strategy for Lambda’s large-scale AI cloud. Set technical standards, lead architecture and delivery of distributed network services, guide enterprise customers, resolve cross-team technical challenges, and remain hands-on with complex systems. Mentor engineers, participate in hiring and design reviews, operate production services through on-call rotations, and identify improvements to network availability, performance, and customer products.

Design, build, and operate financial infrastructure for ledgers, ACH and wire integrations, KYC, secure PII handling, and payment workflows. Model complex domains in relational databases, build reliable APIs, ensure correctness and auditability, manage on-call operations, collaborate with Product, Risk, and Compliance, review code, and mentor engineers.

Design, build, and deliver scalable cloud-native backend services and customer-facing applications using AWS, microservices, Node.js, TypeScript, MongoDB, Kubernetes, and Docker. Collaborate on architecture, reusable components, system integration, testing, deployment, release activities, and software sustainment. Evaluate technologies, develop proof of concepts, refactor systems, document solutions, manage Jira issues, mitigate risks, and support agile delivery across backend and frontend development.

Lead full‑stack engineering for enterprise retail solutions: set technical direction, design and build scalable frontend/backend systems and APIs, drive operational excellence, mentor engineers, and partner with customers and product teams to deliver resilient, high‑scale commerce platforms.

Build and own core features for a mobile collectibles trading card app using React Native and Expo. Responsibilities include delivering polished native-feeling experiences, working with native modules and platform APIs, partnering on backend contracts, and owning performance, reliability, startup time, frame rate, and crash-free sessions. The role also involves establishing architecture and guardrails, setting technical direction, mentoring other engineers, and shipping features end to end from design through iteration.

Design and build large-scale distributed cloud services for AI-driven Windows cloud experiences. Lead system design, code reviews, testing, monitoring, and performance optimization while ensuring security, reliability, and cross-team delivery.

Leads software engineering for GEICO’s partner integration platform, including technical roadmap execution, scalable distributed system development, automated testing, CI/CD, production support, and incident management. Collaborates with product managers, business partners, and engineering teams to solve complex problems, improve platform capabilities, and enable continuous delivery. The role also contributes feature code, reviews pull requests, manages infrastructure automation, and supports high-volume, highly available production services.

Design, develop, deploy, and operate highly available, secure, scalable Azure cloud services for sovereign and government environments. Lead complex technical designs, deliver features end to end, improve reliability through automation and monitoring, collaborate across engineering teams, perform diagnostics and root-cause analysis, and mentor engineers while advancing cloud infrastructure expertise.

Own the design, development, and delivery of scalable backend features for Splunk Enterprise Security. Build cloud-native distributed systems, microservices, RESTful and gRPC APIs, and Splunk applications across AWS, Azure, GCP, Kubernetes, and on-premises environments. Solve complex data orchestration and security analytics challenges, integrate AI/ML models, optimize performance, maintain secure coding and CI/CD standards, and mentor engineers through technical guidance and code reviews.

Designs and develops mission-critical software and infrastructure for national security applications. Responsibilities include Linux engineering, programming in compiled and scripted languages, virtual machine and container orchestration, code and release management, automated testing, CI/CD, disconnected synchronization workflows, and maintaining network environments. The engineer collaborates with vulnerability researchers and reverse engineers, mentors colleagues, communicates technical concepts clearly, and delivers reliable customer-focused solutions.

Design, build, and maintain Stellar Core, the distributed system powering the Stellar blockchain. Responsibilities include developing scalable network components, improving peer-to-peer and processing performance, strengthening resilience and decentralization, investigating bottlenecks, authoring protocol specifications, and contributing to architecture, code reviews, and open-source engineering practices.

Design, build, and maintain Stellar Core, the distributed system powering the Stellar blockchain ledger and consensus. Develop scalable, resilient components; improve peer-to-peer networking and processing performance; investigate bottlenecks; and contribute to architecture, code reviews, RFCs, formal verification, simulations, and open-source collaboration. The role requires production C++ or Rust expertise, strong software design skills, and ownership of core subsystems.

Build and maintain Moloco’s mobile advertising SDK across iOS and Android platforms. Responsibilities include SDK architecture, cross-platform tooling, backend and infrastructure integrations, APIs, telemetry, customer integration support, documentation, feature development, and mentoring junior engineers. The role requires strong iOS and Swift expertise, knowledge of multithreading, networking, compilers, optimization, and mobile platform evolution.

Build and operate backend services, APIs, shared platform capabilities, and developer tooling for Handshake AI and internal AI initiatives. Responsibilities include service architecture, database design, performance, scalability, reliability, observability, and developer experience. The role contributes to LLM and agentic systems, including orchestration, evaluation, integrations, and failure handling. It also involves architectural decisions, incident response, cross-team collaboration, technical planning, code reviews, and mentoring engineers.

Own Sidecar Health’s search platform end to end, including AWS OpenSearch clusters, indexing pipelines, search APIs, relevance and ranking, hybrid lexical and semantic retrieval, observability, quality reporting, and incident response. Lead search architecture, expand support for healthcare content types, improve near-real-time indexing, communicate technical direction across teams, mentor engineers, and build internal relevance and analytics tooling using agentic developer tools.

Develop and deploy high-performance machine vision software for semiconductor inspection and metrology systems. Build real-time C++ algorithms with MVTec HALCON for defect detection, alignment, calibration, and 2D/3D inspection. Integrate industrial cameras, frame grabbers, optics, and lighting; validate systems with cross-functional engineering teams; and support manufacturing tools through domestic and international travel of up to 30%.

Design, build, and operate distributed billing systems for metering, rating, invoicing, payments, and reporting. Own medium-sized projects end to end, contribute to multi-team initiatives, ensure reliability and correctness, and partner with Product, Finance, Legal, Growth, and engineering teams. Help define billing and pricing models for AI products, participate in on-call support, improve observability, and mentor engineers.

Develop full-stack investment technology solutions using Java, Python, React, and JavaScript. Partner with equity investment professionals to translate workflows and business needs into scalable applications, APIs, services, data integrations, and user-facing features. Lead development lifecycle activities, code reviews, testing, production support, technical decisions, and small project teams. Mentor junior engineers, improve engineering practices, manage technical debt, and explore responsible AI applications for productivity, automation, decision support, and user experience.

Design, implement, test, and maintain cross-platform core libraries for CrowdStrike’s security sensor across Windows, Linux, and macOS. Own work from technical design through production validation, lead design reviews, resolve fleet-scale incidents, improve testing and reliability, collaborate across engineering teams, and mentor junior engineers. The role requires strong low-level C and C++ systems experience, cross-platform expertise, sound technical judgment, and occasional travel.

Design, build, test, and operate production-grade, secure, and scalable software and services. Partner with customers to translate requirements into technical designs, drive engineering best practices (CI/CD, testing, observability), deliver end-to-end solutions, lead technical workstreams, and apply AI/LLM approaches where appropriate to produce production-ready outcomes.

Define architectural direction for Azure Specialized platform services and lead the design of highly available distributed cloud systems. Drive reliability, scalability, observability, security, diagnostics, and operational improvements across engineering organizations. Establish service health frameworks, SLOs, metrics, and governance for mission-critical services. Mentor engineers, influence technical strategy, resolve complex cross-system challenges, and advance AI-assisted troubleshooting and platform modernization.

Architect and develop scalable frontend applications supporting sales and operational workflows. Lead frontend architecture, frameworks, tooling, accessibility, security, testing, performance, and maintainability. Mentor engineers, guide technical roadmaps, lead large projects, collaborate with product, design, backend, and platform teams, and modernize internal platforms. The role also champions pragmatic AI-assisted development and supports early-stage product evolution in a complex transactional domain.

Design, develop, test, deploy, monitor, and support scalable full-stack software for specialty healthcare workflows. Own features across the software development lifecycle, build frontend and backend systems, APIs, data integrations, and cloud infrastructure, and maintain automated tests. Collaborate with product and engineering teams, develop clinical workflow expertise, mentor engineers, and responsibly use AI-assisted tools for development, testing, debugging, and documentation.