Lead Architect / Principal Engineer
Litmus
Lead Architect / Principal Engineer
Litmus
Email testing, previews, analytics platform
Litmus is building the data foundation that powers industrial AI.
AI doesn’t work without real-world, contextualized data - Litmus makes that data usable. As AI adoption accelerates, most industrial environments still can’t access or use their operational data. We solve that gap.
We’re a growth-stage software company helping manufacturers access, structure, and use real-time data from machines, systems, and sensors at the edge. Our platform sits at the intersection of edge computing, AI, and industrial operations, enabling some of the world’s largest companies to run operations in real time, reduce downtime, and optimize production.
Backed by leading investors and trusted by global manufacturers and partners like Google, Microsoft, Dell, Oracle, and Mitsubishi, Litmus is powering the shift toward software-defined manufacturing.
AI is moving beyond the cloud and into the physical world. At Litmus, you’ll build the infrastructure that enables real-time data to power AI and machine learning systems in production environments.
Most AI systems fail without access to real-world data. You’ll build the layer that makes them viable in production. We solve challenges at the intersection of distributed systems, real-time data, and industrial constraints — where reliability, scale, and performance are non-negotiable.
You’ll work on systems used by real customers in production, with direct impact on product and company trajectory. As a scaling company, we move quickly. You’ll have ownership, visibility, and the ability to shape both product and company as we scale.
We’re building a team that holds a high bar and pushes each other to improve. You’ll work alongside experienced operators, engineers, and leaders who have done this before and are building again at scale. We hire people who take ownership, move quickly, and care about outcomes. No passengers.
At Litmus, the team is collaborative, curious, and low ego. People are scrappy, take ownership, and look for ways to make an impact. We value empathy just as much as execution, whether that’s in how we build, how we communicate, or how we support each other.
We’re a growing company, so things move quickly and not everything is perfectly defined. If you enjoy figuring things out, working closely with others, and making steady progress, you’ll do well here.
Own the overall technical architecture of the platform — set the long-term vision and make the hard calls that balance speed, scale, and maintainability
Drive architectural decisions across multiple teams and systems, ensuring consistency, reliability, and developer velocity
Identify systemic engineering problems early and lead solutions that create org-wide leverage
Partner with engineering leads to design and review critical systems before they're built — not after
Champion and standardize engineering patterns, tooling, and infrastructure best practices across the organization
Evaluate emerging technologies with clear-eyed judgment and guide adoption where it genuinely moves the needle
Mentor and develop senior and staff engineers — raise the technical bar and help your colleagues do their best work
Represent engineering architecture in cross-functional discussions with product, operations, and leadership
Contribute to hiring decisions and help shape what world-class engineering looks like at our company
15+ years of software engineering experience, with a clear track record of org-wide architectural impact
Expert-level Go and deep knowledge of distributed systems design, microservices, and large-scale service architectures
Mastery of Docker and Kubernetes — you've designed production-grade, large-scale deployments and know where things break
Deep Linux/Unix expertise — you understand the systems your architecture runs on, from the OS level up
Proven ability to make irreversible architectural decisions thoughtfully, with an eye on long-term consequences
Strong communicator — you can make complex technical tradeoffs clear to both engineers and non-technical stakeholders
Experience leading through influence, not authority — you bring people along rather than dictating direction
Solid understanding of cloud-native infrastructure, CI/CD pipelines, and DevOps best practices
◦ Experience with industrial IoT, edge computing, or real-time data pipelines (MQTT, NATS, OPC-UA).
◦ Published Architecture Decision Records (ADRs), technical writing, or open source contributions.
◦ Background in platform engineering, developer productivity, or DevSecOps.
◦ Experience with multi-cloud or hybrid cloud strategies.
◦ Time at a high-growth startup — you've felt the pressure of scaling fast and learned from it.
Litmus Automation is an equal opportunity employer, committed to fostering an inclusive and diverse workplace. We believe diverse perspectives lead to innovation.
Litmus provides a subscription-based email marketing platform that combines email testing, analytics, and optimization with AI-driven personalization and security features to improve conversions and ROI for businesses of all sizes. Its product suite includes email previews across devices and clients, spam testing, and performance analytics, along with AI-assisted subject lines and copy suggestions, targeted at marketing teams and agencies who need collaboration tools and reliable email performance data. Unlike many competitors, Litmus emphasizes strong security, seamless collaboration, and AI-powered content optimization within an all-in-one platform. The company's goal is to help customers improve the effectiveness of their email campaigns and maximize ROI through better testing, analytics, and personalization.
Explore more opportunities at Litmus