Top Senior Software Engineer Jobs

Senior Software Engineer will design, build, and operate scalable, highly available backend services for Picksy. Responsibilities include API and service design, owning production reliability, driving architecture and technical debt decisions, mentoring engineers, conducting code reviews, and collaborating with product, design, and cross-functional teams to deliver high-quality features and documentation.

Designs and architects digital products using modern tools and frameworks, implements, tests, and documents software, owns production operations and KPIs, partners with product managers, leads standups and retrospectives, coaches engineering practices (pairing, TDD), and establishes CI/CD pipelines and monitoring.

Design and build scalable shared platform systems and libraries used across product teams, define APIs and standards, influence cross-team architecture, perform code reviews, and maintain documentation to improve developer experience and platform reliability.

Drive technical direction and build AI-first products from zero-to-one: shape product decisions, ship fast prototypes to production, work closely with cross-functional teams, and make architectural and tooling choices that balance speed, quality, and user value.

Full-stack Senior Software Engineer building and maintaining the Flex web platform. Deliver production-ready features using Node.js and TypeScript/JavaScript with component frameworks (Vue/React). Apply system design, data structures, performance optimization, cloud and CI/CD practices, and relational databases. Leverage generative AI across the SDLC, mentor peers, own projects end-to-end, and collaborate in an agile team.

Lead the greenfield mobile engineering effort for CoCounsel Legal: define architecture, set standards, mentor engineers, and write production iOS/Android code integrating with backend APIs (streaming, auth, file access). Partner with Product and Design to deliver performant, accessible mobile experiences and contribute mobile patterns to the broader application engineering community.

Design, develop, test, and maintain software solutions; lead and enforce coding standards; integrate AI-assisted and agentic conversational solutions; perform system analysis, debugging, and integrated testing; mentor junior engineers; participate in code reviews and occasional on-call support.

Design, develop, test, and maintain software solutions; integrate AI-assisted engineering workflows, agentic AI, and conversational interfaces; enforce coding standards; conduct code reviews and integrated testing; mentor junior engineers; analyze systems, estimate work, and provide operational support to optimize efficiency.

Lead design and build of Wealthsimple's in-house card infrastructure end-to-end (issuance, authorization, tokenization, transaction processing, disputes, lifecycle). Own greenfield projects, make architectural decisions, ensure reliability and observability, mentor engineers, partner with Product and Design, and leverage AI-centric workflows to ship safely at scale.

Design, develop, test, debug, and maintain enterprise software. Learn codebase, attend design meetings, write and fix code, perform analysis and testing, and mentor junior engineers.

Design and build scalable, resilient distributed systems across the software lifecycle. Lead architecture and design, mentor junior engineers, collaborate cross-functionally, use cloud and container orchestration, apply DevOps practices, and leverage AI to increase development efficiency and reliability.

Lead development and maintenance of React-based enterprise web applications; own architecture and code quality; mentor engineers; plan and estimate work; integrate vendor/customer hardware; modernize healthcare IT and continuously improve development processes.

Lead research, design, development, and validation of advanced nonlinear finite element analysis algorithms and solution capabilities for MSC Nastran/Marc. Implement, optimize, test, benchmark, and document FEA features; create verification models and automated regression tests; investigate defects and performance issues; support QA, release readiness, and cross-team collaboration while mentoring engineers and guiding architectural decisions.

Build and improve a web platform for restoration contractors. Develop features across front-end and AI-driven voice/vision systems, ship high-quality code, mentor teammates, optimize systems, and shape engineering processes to scale the product.

Lead design and implement backend services for monitoring systems using Node.js/TypeScript. Own features end-to-end, ensure reliability, scalability, observability, mentor teammates, and collaborate with product and design to solve ambiguous problems.

Lead architecture and operation of Baxter udio/video communication infrastructure. Design and scale SIP routing, media servers, SBCs, and low-latency call-routing solutions. Integrate voice/video into services, troubleshoot media/network issues, and mentor engineering teams while defining telecom best practices.

Design, develop, and maintain scalable, secure enterprise software. Mentor junior engineers, perform code reviews, troubleshoot issues, work with QA and Cloud teams, and improve development processes and tooling.

Senior full-stack developer responsible for designing and coding .NET/C# and TypeScript features, working with Product and customers, handling data migrations, and using Elastic, Redis, and SQL to deliver production-ready solutions.

Lead end-to-end delivery of web projects: discovery, architecture, implementation, deployment, and post-launch support. Act as technical lead and client contact, write front- and back-end code, perform reviews, mentor engineers, use AI-assisted workflows, manage scope/timelines, and identify risks early.

Design, develop, unit test and maintain features for a business-critical website as a full-stack developer. Collaborate with product owners, security, QA and stakeholders within a SAFe agile team. Follow release/build/configuration management and project governance, maintain documentation, and work on microservices and front-end technologies.

As a Sr. Software Engineer at Bloomerang, you will lead technical direction, mentor engineers, and enhance SaaS solutions while utilizing .NET and AI tools. You will ensure scalable, maintainable applications, advocate for Agile workflows, and focus on quality outcomes in software development.

Design and implement scalable backend services and web/mobile features for a high-traffic product. Improve reliability, testing, and architecture, participate in on-call/incident response, mentor engineers, collaborate with product and design, and evaluate new tools to boost performance and remove team blockers.

Lead a small engineering team while writing production Java backend code daily. Design and own data ingestion, enrichment, entity resolution, and search-indexing systems. Ensure reliability, performance, observability, and technical quality; mentor engineers; collaborate with product and partners; drive down technical debt; use cloud, containerization, and CI/CD best practices to deliver scalable services.

Build and maintain React front-end and Golang backend services deployed on AWS. Collaborate with Product and planners, write tests, pair program, estimate work in a ScrumBan process, and participate in performance and learning initiatives to improve a fintech planning platform.

Lead architecture and implementation of mission-critical backend and data systems for a SaaS platform serving millions of parts and vehicle configurations. Own systems end-to-end, set cross-team technical direction, write production code, mentor engineers, and build the platform for serving large AI/ML models with strong emphasis on reliability, performance, and data modeling.