Top Software Engineer Jobs in Leon

The Senior Software Engineer will develop financial systems, mentor junior engineers, and collaborate with finance teams, leveraging their accounting knowledge to enhance automation and reconciliation processes.

Responsible for application development and testing, focusing on quality assurance through automated testing. Participates in the software development lifecycle, conducts performance and security testing, and integrates automation frameworks with CI tools.

Design, build, and maintain scalable backend services and cloud-native systems using TypeScript, Python, AWS, and Terraform. Lead architecture, optimize distributed systems, contribute to CI/CD and infrastructure automation, troubleshoot production issues, mentor engineers, and collaborate across Product, QA, and DevOps teams.

Design, implement, and scale robust Rust services and libraries for trading, payments, and crypto. Build low-latency distributed systems using RPC, Kafka, and event-driven patterns. Write testable, high-performance asynchronous network code, debug across OS/network/application stacks, own systems end-to-end, and mentor other engineers while collaborating with product teams.

As a QA Automation Engineer, you'll develop test plans, perform testing, lead automation initiatives, and ensure high standards for Kraken's trading platforms.

This role involves designing and maintaining scalable full-stack applications, leading architecture decisions, mentoring engineers, and optimizing applications for performance and security in a cloud environment.

The Senior Software Engineer will design and maintain scalable web applications, develop APIs, integrate services, and work with cross-functional teams, utilizing technologies such as PHP, TypeScript, and AWS.

The Senior Software Developer will design and maintain web applications, focusing on front-end development with React and Tailwind CSS, backend logic with Supabase and PostgreSQL, and collaborating with business users for feature delivery.

Senior full‑stack engineer who designs and implements web and mobile frontends and backend services using 12‑factor principles, TDD, and CI/CD. Participates in architecture, paired programming, iteration planning, retrospectives, and coaches junior engineers while supporting production environments and establishing deployment pipelines.

Lead modernization of legacy .NET applications to .NET 8, containerize workloads, modernize UIs with Blazor/Angular, refactor code for scalability, implement CI/CD and cloud deployments, ensure DB integration with ADO.NET/Dapper, mentor junior developers, and drive microservices and API-first architecture decisions.

Lead technical strategy and execution across multiple teams by designing, building, and operating large-scale distributed systems and backend services. Drive cross-functional initiatives from design to production, improve reliability, scalability, observability, and developer productivity, mentor engineers, and apply AI-enabled tools and automation where appropriate. Collaborate with Product, Data, Risk, and business stakeholders and participate in incident response and long-term reliability improvements.

The Open Source Engineer will expand LanceDB's integration with big data systems, manage dataset operations, and enhance open-source community efforts.

The Senior Software Engineer will design, implement, and optimize software solutions, collaborate with stakeholders, lead technical reviews, and ensure quality and performance through best engineering practices.

Design, build, and maintain consumer-facing features across web (React) and mobile (React Native). Own product lifecycle from discovery through release, monitoring, experimentation, and iteration. Drive A/B testing and feature-flag strategies, make architectural decisions, ensure accessibility/performance/testability, mentor engineers, and collaborate with Product, Design, Data, and Platform teams.

Lead backend architecture and build scalable, configurable onboarding playbooks and rule-based workflows. Implement AI-driven automations, ensure high reliability of APIs and microservices on cloud platforms, mentor engineers, and serve as technical escalation for complex client launches.

Seeking a Senior Software Engineer with expertise in Typescript, Python, and AWS to design backend systems, drive architectural decisions, and mentor team members within a fast-paced environment.

Lead architecture and development of legal tech solutions, act as technical lead with external partners, design data models, resolve complex bugs and performance issues, mentor developers, and drive cross-functional project execution.

Lead design and development of complex software features, translate product requirements into designs, write and review specifications, fix bugs, implement best practices, design data models, collaborate across teams, and stay current with new technologies to support products such as Lexis+ AI.

Design, build, and maintain scalable software components; contribute to architecture decisions; resolve complex bugs and performance issues; review code; apply best practices and TDD; design data models; mentor junior developers; collaborate with stakeholders across Agile, Waterfall, or hybrid environments.

Architect and build scalable, secure backend microservices for Payments, Disbursements, or GRC squads. Implement payment and disbursement workflows, KYC/compliance pipelines, and cloud infrastructure using Google Cloud and Kubernetes. Collaborate cross-functionally, mentor junior engineers, and optimize systems for high throughput, reliability, and regulatory compliance.

Design, build, and scale backend microservices for Payments, Disbursements, or GRC squads. Implement secure, high-performance payment and disbursement workflows, KYC/AML and compliance features, and infrastructure using Google Cloud, Kubernetes, and Terraform. Collaborate cross-functionally, mentor junior engineers, and iterate on platform capabilities using analytics and user feedback.

Architect, build, and scale backend microservices for Payments, Disbursements, or GRC squads; design high-performance, secure payment and disbursement workflows; integrate Google Cloud services and distributed systems; ensure compliance (KYC/AML); collaborate cross-functionally; mentor junior developers; and iterate on platform reliability and performance to support millions of daily requests.

Design, build, and own backend services for Learning Products. Deliver end-to-end features, design scalable APIs and data models, ensure observability and production readiness, integrate with CI/CD, collaborate with product and QA, mentor junior engineers, and improve engineering practices across the SDLC.

Design and build backend services, drive features independently, collaborate with teams, and mentor junior engineers while ensuring high-quality software delivery.

As a Sr. Software Engineer on the Storage Platform team, you'll enhance the durability and throughput of Backblaze's data storage system and drive architectural changes for improved customer service.