• Work on hard engineering problems in battery technology for robotics, data centers, and defense • Collaborate on intelligent battery systems

Malwarebytes/ThreatDown is looking for.. A dynamic team player to own the full Windows stack end to end, spanning the desktop application UI, SDK, and core protection engines. It is a high-visibility leadership role on our flagship product. You will define technical strategy, build and scale the team, and deliver world-class security outcomes. Responsibilities include UI architecture and workflows, modular scanning engines, policy, telemetry, cloud communication, and an experience that delights customers. What You Will Do: Leadership & Team Building - Lead a high-performance organization across multiple squads - Hire, mentor, and develop engineering managers and senior technical leaders - Build a high-performing engineering culture with a focus on quality and execution - Own organizational health, talent development, and long-term platform sustainability. Technical Strategy & Execution - Partner with Design and Product to deliver a modern, polished, and intuitive experience. - Drive development of kernel drivers, behavioral detection, and AI-driven threat analysis - Establish engineering best practices, code quality standards, and testing strategies - Set engineering vision and direction across protection, performance, reliability, and scale. Cross-Functional Collaboration - Partner with cloud, detection, and product teams to deliver integrated solutions - Collaborate with 3rd party labs for certifications and industry benchmarks - Communicate progress, risks, and technical decisions to senior leadership - Partner with Product to shape roadmap, estimate work, and prioritize under ambiguity. Innovation & Improvement - Identify opportunities to rebuild and improve where needed - Evaluate emerging OS features, APIs, and industry trends - Embed advanced AI and behavioral analytics into detection capabilities - Drive continuous reduction in CPU, memory, and disk impact without weakening protection Skills You'll Need to Have: - 15+ years of software engineering experience with 5+ years leading engineering teams as a Director of Engineering - Deep expertise in Windows internals - Track record of shipping commercial Windows software products - Strong understanding of software security concepts and secure coding practices - Excellent communication and stakeholder management skills - Preferred - Experience in device security, anti-malware, or threat detection products - Knowledge of Windows security architecture (ELAM, secure boot, code signing) - Experience with 3rd party lab certifications (AV-TEST, AV-Comparatives, SE Labs) - Background scaling engineering teams and processes in a growing organization Perks & Benefit: - Comprehensive medical, dental, and vision insurance coverage - Employee Referral Bonus Program  - Wellness programs   - 401k and employer matching for (US Employees) - Comprehensive Time Off policy - An opportunity to do something great for yourself and the world! (Benefits and Perks subject to change by country/region) Legal Language: (US Employees Only) Applicants have rights under the Federal Employment Laws: - Employee Polygraph Protection Act - Know Your Rights: Discrimination is Illegal - Family and Medical Leave Act (FMLA) This is to affirm our policy of providing equal employment opportunities to all employees and applicants for employment in accordance with all applicable laws and regulations. Our company will not discriminate against or harass any employee or applicant for employment because of race, color, creed, religion, national origin, sex, sexual orientation, gender identity, disability, age, marital status, familial status, membership or activity in a local human rights commission, or status regarding public assistance. We will ensure that all our employment practices are free of discrimination. Such employment practices include, but are not limited to, the following: hiring, upgrading, demotion, transfer, recruitment or recruitment advertising, selection, layoff, disciplinary action, termination, rates of pay or other forms of compensation, and selection for training, including apprenticeship. We will provide reasonable accommodation to applicants and employees with disabilities whenever possible.

Senior Software Engineer, Commerce Kajabi is hiring a Senior Software Engineer to join our Commerce team and help shape the future of payments, checkout, subscriptions, and monetization at Kajabi. You’ll work at the intersection of product reliability, financial compliance, and user experience — building scalable systems that power the business side of our creator ecosystem. This role requires strong expertise in Ruby on Rails, React, Postgres, combined with hands-on experience using AI tooling, including agents, to drive smarter workflows and user-facing features. The Impact you will make - Design, build, and maintain scalable backend systems and APIs using Ruby on Rails to power core commerce functionality (checkout flows, invoicing, subscription billing, tax compliance, etc.) - Develop rich, dynamic user interfaces in React that make complex payment processes feel intuitive and delightful. - Integrate AI tooling and agents to streamline product, operational, and development workflows. - Collaborate cross-functionally with Product, Design, and Data to align on user experience and performance goals. - Lead system design conversations, participate in architecture reviews, and contribute to long-term platform direction. - Write clean, testable, maintainable code and provide thoughtful peer reviews. - Support the reliability and security of payment systems — including PCI compliance and fraud mitigation practices. - Champion robust monitoring and observability practices with Datadog. - Provide technical leadership and ownership delivering amazing features to our Heroes. Key Attributes for Success - You’re product- and customer-minded—constantly thinking about how users buy, sell, and manage revenue on Kajabi. With over $1 billion in transactions processed annually through our platform, you understand the impact every interaction has on our creators’ livelihoods and are driven to elevate every touchpoint across the payments experience. - You make pragmatic decisions. You’re not afraid to challenge assumptions, but once aligned, you commit fully to execution and delivery. - You’ve shipped features that impacted key commerce metrics—like conversion, churn, cart value, or failed payment recovery—and have a strong intuition for what drives user trust in financial systems. - You have deep experience working with Stripe’s APIs and can confidently build robust, scalable, and trustworthy commerce experiences. - You balance speed and quality—prioritizing clean architecture, rollback safety, and test coverage in a domain where bugs can have real financial impact. - You use automation, developer tooling, and AI-assisted workflows —like Windsurf, Cursor, Claude Code, and Devin AI— to accelerate delivery without compromising reliability or maintainability. - You’re confident working across the stack—especially in Ruby on Rails, React, and Postgres—and you’re comfortable designing and debugging both backend flows (e.g., subscription billing, tax logic) and customer-facing UIs (e.g., checkout, pricing configuration). - You thrive in a collaborative, cross-functional environment—partnering with Product, QE, Design, and Support to solve real-world commerce problems. You’re not just shipping code, you’re shaping the economic backbone of the Kajabi platform. - You’re comfortable querying production data to validate assumptions, diagnose issues, or advocate for better instrumentation to ensure financial transparency and traceability. - You’re resilient and curious—especially when faced with unexpected behavior in complex systems like payment gateways or tax engines. You push past ambiguity to find root causes and lasting improvements. - You communicate with clarity and intention—whether you're explaining tradeoffs in API design, mentoring a teammate through a PR, or reviewing the rollback plan for a high-impact release. - You design production-ready solutions from day one—whether it’s safe schema changes, idempotent billing flows, or alerting strategies that respect the sensitivity of financial systems. - You help level up the team—offering thoughtful feedback in design reviews, contributing to internal tooling. Bonus if you Have - Familiarity with international payments and currency support. - Contributions to open-source Rails or React projects. - Experience building tools for content creators. - Familiarity with product analytics tools (e.g., Amplitude, Looker, Hex, Rudderstack). - Operational experience deploying on cloud based infrastructure and monitoring via Datadog. Why Kajabi? - Build and support software that makes the world a little bit better by empowering thousands of people to help millions of people get a little bit better at... just about everything: We've built a product that people from all walks of life are using to teach just about anything you can imagine, from personal development, to personal finance and investing, to software development, to yoga, or floral arrangement and everything in between and beyond. Whatever your interests, there are likely at least a few customers who are sharing that kind of knowledge with the world, using Kajabi. If you care about teaching, sharing, and helping others, consider your work at Kajabi a force multiplier that will touch the lives of millions of people. You'll learn a thing or two about what it takes to create, market, and sell digital products. You might even be inspired to make a course of your own—we'd love that! - Work with an incredible group of human beings:"It's the people." That's what everyone seems to say when asked what they like most about working at Kajabi.We spend a major portion of our lives at work, so above all we try to be good humans, to each other and to our customers. - Work within a collaborative and high performing cross-functional product team: We've divided responsibility for our app across several cross-functional teams consisting of about 7 to 10 people including a product designer, QA, UX developer, and a few full-stack or backend developers. Kajabi Team Benefits Package - Competitive full-time salary + bonus - Full medical, dental, and vision (company-paid for you + family) - 401(k) with 6% match - Flexible PTO - Fitness + wellness perks - Mental health resources - Company travel for in office collaboration days, and leadership growth opportunities How We Work Together We let the type of work you do guide the collaboration style. That means we're not always working in an office, but we continue to gather for key moments of collaboration and connection. - For this role, occasional travel to our Newport Beach, CA office is expected for in-person collaboration up to 3 times a quarter. As a result, this role is best suited for candidates in the Pacific Time zone. This role is remote, but we’re also happy to support relocation for exceptional candidates who wish to work from our Newport Beach, CA office. If this is of interest, please let us know when we connect! Pay Range At Kajabi we believe the workplace should be equitable, inclusive, and inspiring for every employee. In an effort to provide greater transparency, we are sharing the base salary range for this position. The position is also eligible for a bonus. Final salary is based on a number of factors including location, travel, relevant prior experience, or particular skills and expertise. US based applicants only. US applicants working virtually - $127,000— $168,000 + bonus US applicants working onsite out of our Newport Beach, CA office - $137,000- $182,000 + bonus How To Apply If you're hungry to do the best work of your career, on a product that actually matters, let's talk. Kajabi LLC is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, gender expression, national origin, disability, age, veteran status, or any other basis protected by applicable law.

The Opportunity Proximity is seeking a Senior Staff Software Engineer / Engineering Lead to drive the architectural evolution of our cloud-native platform. This is a high-leverage player-coach role: you will define engineering standards, architect high-volume distributed systems, and lead a US-based team of engineers through complex technical challenges. You’re not just a lead — you’re a technical authority. You understand what happens to a database index when a table hits a billion rows. You can diagnose why a distributed transaction failed before you even open the logs because you helped design the system and its observability. You operate with the urgency to stabilize production systems, and the long-term perspective to build a platform that scales. Core Responsibilities 1. Architectural Strategy & Cloud Leadership - Architect and implement scalable microservices using .NET Aspire and Azure Container Apps, ensuring reliable service discovery, resiliency, and operational simplicity. - Design hybrid cloud data strategies, managing complex ETL pipelines between AWS S3 and Azure Data Factory that handle terabytes of data with automated retries, resilience and binary copy resumption. - Define the "Golden Path" for development, utilizing YARP as a strategic Backend-for-Frontend (BFF) to manage traffic routing, protocol upgrades, and legacy system strangulation. 2. High-Volume Data Engineering - Own the database architecture for high-load systems. Implement declarative partitioning (range/hash) strategies to maintain sub-millisecond query performance on datasets exceeding 1 billion rows. - Optimize Entity Framework Core and SQL queries to ensure efficient partition pruning, preventing I/O bottlenecks. - Manage the lifecycle of heavy data loads, ensuring zero-downtime migrations and non-blocking maintenance operations (e.g., VACUUM/ANALYZE). 3. Distributed Systems & Reliability - Implement eventual consistency patterns using MassTransit Sagas (state machines) to orchestrate complex, long-running business transactions across microservices. - Enforce the Transactional Outbox pattern to guarantee message reliability, idempotency, and correctness in an event-driven architecture. - Secure the infrastructure using Azure Private Link and VNet integration, ensuring critical data stores have no public exposure. 4. Observability & Operational Excellence - Build a world-class observability stack using OpenTelemetry (OTel), Azure Monitor, and Azure Managed Grafana. - Define Service Level Objectives (SLOs) and create dashboards that visualize saturation, latency, and error rates to proactively identify bottlenecks. - Lead the team through root-cause analysis and incident reviews, fostering a blameless culture that prioritizes systemic improvement over individual fault. Qualifications - Experience: 10+ years of software engineering experience, including 3+ years in a Lead, Staff, Principal, or architecture-focused role. - Tech Stack: Mastery of C# /.NET 8+, Azure (Container Apps, SQL, Service Bus, ADF), and AWS (S3 integration). - Heavy Load Expertise: Proven track record of scaling databases (PostgreSQL/SQL Server) to billions of rows. You can explain how you diagnosed and solved locking, bloat, or performance issues at scale. - Integration Mastery: Experience with complex backend integrations. Knowledge of EDI standards (X12, NCPDP D.0) or healthcare claims processing is a major plus. - Leadership Style: Demonstrated ability to lead remote teams, set best practices (RFCs, Code Review Standards), and mentor senior engineers. - Work Authorization: Must be currently authorized to work in the United States without need for future sponsorship. Compensation & Benefits - Benefits: Comprehensive Medical, Dental, and Vision, 100% premium for employees and 25% coverage for dependents - Culture: A focus on technical excellence, where urgency means disciplined execution — and architecture is treated as a competitive advantage. Why Proximity - Build technology that strengthens access to care across the U.S. healthcare system. - Shape the architecture of a platform evolving from automation to intelligence. - Work alongside a data-focused, mission-driven team redefining how 340B programs operate. - Be part of an organization with a clear, unified technical vision and high expectations for engineering excellence.