Top Senior Software Engineer Jobs

Build and scale Base360.ai’s short-term rental platform, including customer-facing applications, APIs, automation engines, AI-powered workflows, third-party integrations, and cloud infrastructure. Develop systems for reservations, pricing, payments, guest communication, property operations, reporting, and financial workflows. Own projects end to end, make architectural decisions, ensure reliability, and deliver scalable products in a remote-first startup environment.

Designs, develops, tests, deploys, modernizes, and supports Java enterprise applications and integrations. Troubleshoots applications, APIs, databases, and data pipelines; improves reliability through automation, testing, monitoring, CI/CD, and secure coding. Translates business requirements into maintainable solutions, collaborates with stakeholders and vendors, participates in code reviews and design discussions, and mentors teammates. The hybrid role requires working from the Chicago office at least one day per week.

Leads the design, development, testing, and deployment of scalable full-stack SaaS applications. Builds features using ReactJS, TypeScript, NodeJS, PostgreSQL, and S3; resolves complex architectural issues; advances AI-native development; and drives cloud, DevOps, observability, and event-driven architecture practices. Collaborates cross-functionally, mentors engineers, represents technical strategy, and delivers customer-focused solutions for government agencies.

Develop production software using AI-assisted and Spec-Driven Development practices. Implement features from approved specifications, evaluate AI-generated code, handle integrations and edge cases, maintain automated testing, and contribute to architecture. Ensure systems are secure, auditable, performant, observable, and compliant with GxP expectations. Work across backend and frontend technologies within small, collaborative squads.

Design and build JTX, a high-performance Solana trading application. Develop low-latency, reliable systems for order routing, execution, real-time market data, and position management. Own critical infrastructure, implement security across transaction signing and user data, make architectural decisions, and collaborate with product and infrastructure teams in a fast-moving 0-to-1 environment.

Leads end-to-end engineering for complex, distributed systems and shared platform services. Designs scalable cloud-native architectures, event-driven applications, security models, deployment strategies, and resilient data flows. Develops and supports enterprise applications, establishes testing and quality practices, manages technical documentation and project plans, advises leadership, resolves cross-functional technology issues, and mentors junior engineers. Requires strong expertise across Java, Spring Boot, Node.js, React, Kafka, containers, CI/CD, cloud deployment, automated testing, and observability.

Architects and develops large-scale customer-facing web applications, reusable front-end systems, distributed services, and Oracle-based financial data warehouse platforms. Leads application architecture, CI/CD, testing, deployment, observability, documentation, risk management, and project planning. Advises management on technical strategy, resolves business and technology issues, ensures delivery quality and timelines, and mentors junior engineers.

Develops complex financial services applications using Java, Spring Boot, REST APIs, AWS, microservices, Kubernetes, Kafka, SNS, and SQS. Designs resilient distributed systems, automated unit and integration tests, CI/CD deployments, databases, and production support processes. Performs technical analysis, documentation, testing, user acceptance support, incident diagnosis, and application implementation across multiple projects.

Architects and develops secure, scalable web and distributed applications using Java, Angular, JavaScript, REST, Kafka, and cloud-native technologies. Responsibilities include application architecture, testing, CI/CD, release management, production support, observability, performance optimization, project planning, risk management, technical strategy, documentation, and mentoring. The role partners with business units and advises management on complex technology initiatives.

Designs and develops secure, full-stack cloud applications and microservices across on-premises and cloud environments. Responsibilities include application architecture, API development, real-time synchronization, containerization, security controls, testing, documentation, project planning, technical analysis, and production reliability. The role also supports AWS multi-region platforms, database optimization, iOS application layers, cross-functional technology initiatives, risk management, and mentoring junior engineers.

Develops and architects enterprise RPA and digital labor solutions using Blue Prism, APIs, AI technologies, and business process automation. Integrates automation with databases, DevOps tools, mainframe platforms, cloud storage, and enterprise applications. Leads complex technical analysis, architecture, testing, documentation, risk management, and project delivery while advising leadership, improving automation standards, and mentoring junior engineers.

Set technical direction for a high-traffic biller-workflow platform supporting claims, appointments, payments, posting, and billing operations. Lead full-stack architecture, multi-team platform rebuilds, frontend performance, API and PostgreSQL optimization, observability, AI workflow integrations, code reviews, technical standards, and mentorship. Partner with clinicians, billing operators, product, and design while maintaining reliable enterprise production systems.

Design and implement Azure cloud architectures and applied AI solutions for data science and experimentation projects. Provide technical architecture leadership, develop and deploy software, conduct security reviews and threat modeling, resolve service issues, guide users, document solutions, and present capabilities to technical and executive audiences. Build proofs of concept and MVPs that progress to production deployments while collaborating with data scientists, engineers, researchers, and external partners.

Design, build, and operate large-scale observability services and data platforms covering monitoring, logging, alerting, tracing, metrics ingestion, and real-time and batch processing. Develop reliable software across Kubernetes, cloud, and bare-metal environments, optimize air-gapped federal AWS regions, and support platform security and compliance. Participate in on-call operations and collaborate with cybersecurity and commercial engineering teams.

Owns and advances serviceability for in-vehicle infotainment and vehicle compute platforms. Responsibilities include debugging complex field issues, analyzing logs, warranty data, and telemetry, developing diagnosability features, building automated and AI-assisted diagnostics, improving dealer support workflows, enforcing observability standards, and coordinating with vehicle platform teams. The role also mentors engineers and supports production vehicle software releases.

Design, develop, deploy, and operate distributed messaging, streaming, and caching services using platforms such as Kafka, Redis, and RabbitMQ. Build software modules, automation, observability, and infrastructure across Kubernetes, OpenStack, bare metal, and AWS environments. Optimize resilient production systems, participate in on-call support, evaluate cloud-native technologies, and collaborate with cybersecurity teams on federal platform security. The role requires U.S. citizenship, federal project experience, and the ability to obtain a TS/SCI with CI polygraph clearance.

Staff Software Engineer responsible for architecting and developing scalable web applications and APIs using Elixir, React, and PostgreSQL. The role involves solving ambiguous technical and business problems, ensuring system reliability and performance, collaborating cross-functionally, presenting solutions to leadership, writing tested code, participating in code reviews, mentoring engineers, and removing technical roadblocks.

Provides technical leadership for a digital commerce platform, defining architecture roadmaps and modernizing eCommerce systems through headless commerce, cloud-native architectures, AI, and microservices. Designs scalable APIs and integrations, establishes engineering standards, leads complex initiatives, evaluates third-party technologies, and improves reliability, security, performance, observability, and operational excellence. Mentors engineers and managers while partnering cross-functionally to deliver secure, high-performing commerce experiences.

Architect and build high-throughput backend systems for Filevine’s legal technology platform using .NET, DDD, event sourcing, MartenDB, Wolverine, and PostgreSQL. Own features end to end, including domain modeling, APIs, testing, observability, CI/CD, and production monitoring. Mentor engineers, optimize system resilience and performance, and collaborate with product, UX, and legal experts to translate complex workflows into scalable software.

Build and own core full-stack product features for a civic-tech HR platform used by local governments. Responsibilities include designing data models, backend APIs, React interfaces, AI and LLM-powered workflows, data ingestion pipelines, observability, testing, and CI/CD. The role requires architectural ownership, strong product judgment, independent execution, and collaboration with founders in an early-stage startup.

Designs, develops, tests, integrates, and leads delivery of next-generation distributed storage platforms. Collaborates with firmware, hardware, and Storage OS teams; oversees internal and outsourced development partners; reviews architectures and designs; drives technology integration; ensures testing quality; and mentors less-experienced engineers. Requires low-level C and Rust programming, embedded systems expertise, and knowledge of SAS and NVMe protocols.

Build and improve Mozilla’s Firefox Add-ons platform, including moderation pipelines, reviewer tools, DevHub, and full-stack features. Develop React/TypeScript frontends and Django/MySQL backends, improve reliability through Google Cloud deployments, monitoring, and incident response, and create observability and security systems. Collaborate with product, design, QA, reviewers, developers, and open-source contributors while responding to platform incidents and supporting ecosystem safety.

Own end-to-end system design, API contracts, technical direction, and cross-team delivery for platform engineering systems. Coach engineers through reviews and pairing while remaining hands-on with coding, operations, monitoring, incident response, and on-call responsibilities. Improve CI/CD, observability, testing, and documentation. Relevant domains include data engineering, automation, developer tooling, AI enablement, and product engineering.

Build and maintain highly scalable ingestion pipelines and indexing solutions for semantic search and LLM grounding across enterprise M365 data. Design, implement, test, and operate low-latency, high-availability services while ensuring security, compliance, and integration with other engineering teams.

Build, enhance, modernize, test, deploy, and sustain enterprise Java and Spring Boot applications supporting DoD financial and program management. Responsibilities include full-lifecycle feature ownership, Oracle schema and SQL development, Angular contributions, CI/CD pipeline delivery, security scanning, defect investigation, architecture participation, code reviews, and secure cloud deployment. The role requires evaluating existing systems, applying sound technical judgment, and meeting federal security and compliance requirements.