Top Senior Software Engineer Jobs

Build and extend backend-focused web application features, design core product functionality, solve scaling challenges, review code and technical designs, own major product areas, and mentor, interview, onboard, and coach engineers. The role partners closely with founding leadership in a fast-paced fintech startup and requires hands-on experience with production Python and modern JavaScript codebases.

Develops, maintains, and modernizes Penn Vet’s B2B eCommerce website across front-end and back-end systems. Responsibilities include building scalable web applications, APIs, databases, and server-side functionality; administering Linux and enterprise Java platforms; implementing security practices; supporting legacy systems; reviewing code; and collaborating with technical and business stakeholders. The role may be remote, hybrid, or onsite and may require work outside normal hours for deployments and system maintenance.

Senior Software Engineer responsible for maintaining legacy .NET and SQL Server applications while building Go and React microservices on AWS. The role spans full-stack debugging, distributed-systems design, cloud migration, observability, deployment patterns, AI-assisted development, documentation, stakeholder communication, and mentoring. The engineer will work across multiple projects and help modernize the company’s property tax technology platform.

Develop, maintain, enhance, test, integrate, and troubleshoot scalable Java applications using Spring technologies. Work with Linux, scripting, SQL and NoSQL databases, containers, Kubernetes, Helm, messaging systems, CI/CD, infrastructure automation, and Git. Collaborate cross-functionally to ensure reliability, performance, security, and integration across complex mission-focused environments.

Develop and maintain full-stack applications for an agentic AI platform, including responsive front ends, REST backend services, AI-agent integrations, AWS cloud infrastructure, and Infrastructure as Code. Collaborate with AI/ML engineers and product owners, support testing and performance optimization, document systems and APIs, and mentor junior developers. The role is remote within the United States and requires eligibility for a Secret clearance and completion of CompTIA Security+ within 270 days.

Develop and maintain software for Gun Fire Control and weapon systems within an Agile environment. Responsibilities include design, coding, testing, integration, pipeline management, debugging, data analysis, peer reviews, release reviews, and collaboration with cross-functional teams. The role requires Department of Defense software engineering experience, weapons-system support, C++ or Python development, containerization, Linux, debugging and networking tools, and eligibility for an active Secret clearance.

Design and develop highly available, fault-tolerant distributed edge computing platforms using Go, Kubernetes, microservices, and cloud technologies. Build scalable APIs, troubleshoot complex systems, conduct code reviews, optimize performance and security, collaborate cross-functionally, mentor engineers, contribute to planning, and maintain technical documentation.

Build and maintain a full-stack AI-native CRM and Sales Co-Pilot: implement features, integrate ERPs, email/telephony, develop GraphQL APIs, deploy to Kubernetes, and integrate LLM-driven automation.

Develop and maintain medical device software using C++, Qt, and QML. Responsibilities include designing desktop applications, conducting code reviews, debugging, testing, documenting regulated software systems, defining requirements, and supporting products throughout the full development lifecycle. The role uses Agile methodologies, contributes to product planning and release activities, provides engineering support, and mentors or coordinates the work of other engineers.

Develops, sustains, tests, integrates, and troubleshoots software applications and services. The role uses Java and Spring technologies, Linux, scripting, SQL and NoSQL databases, containers, Kubernetes, Helm, messaging frameworks, CI/CD tools, infrastructure-as-code, and Git. Requires an active TS/SCI clearance with polygraph and substantial software engineering experience supporting programs of comparable scope and complexity.

Leads the design, configuration, coding, integration, security, resiliency, and support of enterprise building management systems. Develops BMS integrations using APIs, networking, messaging, and cloud technologies; establishes engineering standards and architecture patterns; manages upgrades, firmware, vulnerabilities, monitoring, and modernization. Provides technical leadership across Niagara, Desigo, EcoStruxure, Lutron, and related platforms while advising stakeholders, leading initiatives, and mentoring engineers.

Owner of localization automation and integration: design and maintain automation frameworks (Python, APIs), integrate AI/LLM solutions, manage TMS (XTM, Smartling), perform i18n code audits, root-cause complex integration issues, and build self-service tooling for early localization detection.

Designs and owns scalable, fault-tolerant data processing architectures and pipelines handling petabyte-scale Bing and MSN data. Builds datasets, dashboards, metrics, anomaly detection, data quality checks, and real-time insights using Spark, Flink, Azure, Kafka, EventHub, HDFS, and Azure Blob Storage. Optimizes performance, storage, reliability, compliance, and governance while collaborating with data scientists and product managers. Applies AI throughout coding, testing, data processing, and validation.

Lead design, build, and operate backend agentic systems that analyze large-scale time-series telemetry. Own product from customer discovery through shipping. Implement APIs, distributed job execution on Kubernetes, sandboxed code execution, context/memory management, evaluation suites, and observability while integrating frontier models and scaling agent workloads.

Develop and maintain scalable SaaS solutions for financial reporting and capital markets customers. Responsibilities include full-stack development, system design, testing, monitoring, performance optimization, security, technical debt reduction, and collaboration with product managers, developers, and SRE teams. The role requires building reliable, secure, maintainable data-driven applications and contributing across the software development lifecycle.

Build and operate backend services for stablecoin payments, including deposits, withdrawals, on/off ramps, wallets, and virtual accounts. Integrate crypto partners with existing banking, ledger, and payment systems while developing KYB and compliance workflows. Own projects from design through production, ensure reliable money movement, influence technical direction, collaborate cross-functionally, and mentor engineers.

Architect, develop, and optimize Intel’s oneCCL collective communications library for scalable AI and HPC workloads. Responsibilities include designing communication algorithms, improving distributed-system performance and resilience, troubleshooting system-level issues, optimizing multi-node and accelerator workloads, and collaborating with hardware architects, researchers, engineers, open-source contributors, and customers. The role requires expertise in C/C++, Linux, distributed systems, networking, operating systems, concurrency, and performance optimization.

Support customers deploying and operating Slinky, troubleshoot complex Kubernetes, Slurm, Linux, reliability, and performance issues, and develop maintainable software, integrations, automation, tests, and diagnostic tooling. The role partners with engineering, infrastructure, operations, and deployment teams while supporting production environments and improving Slinky reliability. Core expertise includes Kubernetes architecture and operations, Linux systems administration, networking, containers, GPU technologies, and software development in Go, C, or similar languages.

Build and maintain Mercury’s design system components, patterns, tokens, and foundations with strong accessibility, performance, and visual quality. Lead projects that improve product team velocity, advance prototyping workflows, and apply AI to design-system development. Mentor engineers and designers, establish best practices, and provide systems-oriented technical leadership across ambiguous, high-impact initiatives.

Build and operate backend-heavy services and AI agents across model pipelines, infrastructure, backend systems, and user-facing features. Own a functional area end to end, potentially leading two to three engineers. Develop guardrails, monitoring, evaluations, data integrations, fault-tolerant workflows, and auditable writes to external systems. Collaborate with end users to automate manual processes and contribute to full-stack development when needed.

Design, develop, and modernize RIVO’s proprietary loan management platform. The role focuses on scalable application architecture, full-stack software development, microservices and event-driven systems, production reliability, observability, CI/CD, testing, and technical debt reduction. The engineer will collaborate with Product, QA, DevOps, and Engineering teams, contribute to technical strategy, establish engineering standards, troubleshoot complex issues, and mentor other engineers.

Design, build, test, deploy, and support secure distributed infrastructure for Azure AI Search and enterprise AI applications. Develop networking, identity, encryption, privacy, observability, billing, and reliability capabilities. Collaborate across teams, manage dependencies and release plans, participate in on-call incident response, improve service diagnostics and automation, and mentor peers through design and code reviews.

Owns architecture and technical direction for secure, enterprise-scale software, data, and agentic AI platforms. Responsibilities include designing distributed services, AI harnesses, data foundations, reliability and telemetry systems, security controls, and operational analytics. The role leads architecture reviews, cross-team planning, compliance, production operations, and reusable engineering standards while mentoring senior engineers and influencing technical roadmaps.

Lead backend and infrastructure development for a high-traffic consumer web platform. Build feature infrastructure, recommendation and model-serving pipelines, and reliable production systems. Own monitoring, logging, incident response, API performance, data access, caching, asynchronous processing, live connections, abuse prevention, architecture, capacity planning, deployment, observability, and recovery decisions on a small, high-ownership team.

Hands-on senior engineer responsible for designing, building, and operating a multi-threaded, Linux-based, real-time Java platform for Equity Swaps. Drive architecture, mentor engineers, own core components (including cashflow calculator), operate and tune sharded MongoDB, improve CI/CD and test automation, lead L3 support, and use AI tooling to accelerate the SDLC.