Lead Infrastructure Engineer

Mosaic.tech; San Francisco (CA); On-site; USD 180,000 - 240,000; Full time

Job summary

Mosaic.tech in San Francisco, CA is seeking a senior Platform Engineer to own and operate our Kubernetes infrastructure and data platform. You will lead large projects, design scalable CI/CD pipelines, and advance our lakehouse strategy while collaborating with BizOps and other stakeholders.

The role emphasizes zero-downtime deployments, cross-functional impact, and ownership from design to operation. Ideal candidates bring deep Kubernetes expertise and a strong interest in modern data

Qualifications

• Deep expertise in Kubernetes, production operations, and zero-downtime architectures.
• Strong experience designing, building, and maintaining CI/CD pipelines at scale.
• Demonstrated eagerness to learn modern data engineering and lakehouse concepts (Iceberg, transformation frameworks).
• Strong SQL skills and ability to optimize queries for performance and cost.
• Excellent cross-functional collaboration with BizOps and non-engineering teams.
• Ownership mindset: deliver systems from design through operation.

Responsibilities

• Scope and lead large, ambiguous technical projects to evolve and scale early-stage products.
• Own and operate Kubernetes infrastructure (EKS) and the Porter orchestrator.
• Apply Kubernetes best practices: resource management, health checks, autoscaling, and rollout strategies.
• Tune deployments for zero-downtime releases and high availability.
• Design and improve CI/CD pipelines for fast, reliable delivery.
• Contribute to observability, alerting, and incident response across the platform.

Skills

Kubernetes

CI/CD

Data engineering

SQL

Cross-functional collaboration

Ownership mindset

Cross-region architecture

Multi-tenant architecture

Lakehouse tooling

EKS/Porter platforms

dbt/Snowflake

Fintech compliance

Tools

Kubernetes tooling (EKS)

CI/CD pipelines

dbt

Snowflake

Iceberg

Porter

Job description

Our mission

The trucking and logistics industry provides the backbone of the economy. But the payments infrastructure on which it runs is broken. For the hard-working men and women of this sector, the existing suite of payment tools is outdated, difficult to use, prone to fraud, and saddled with shady fee structures. The incumbent players in this space often overlook the economic and practical needs of this user base.

We're changing that. AtoB is building Stripe for Transportation — modernizing the payments infrastructure for trucking and logistics. Supply chains rely on the timely movement of capital to function efficiently. Our end game is a world in which that capital movement occurs fairly, smoothly, and without delay. As we pursue that end game, we aim to center our customers in every way — offering them world-class customer experience and building products that work with and around the unique constraints of their daily lives. We build for fleet managers in the office and drivers on the road. We strive for products that are efficient, satisfying, and useful. Our customers enable our modern economy — they deserve it.

Our history and background

Our founding team has backgrounds in payments, working on autonomous vehicles at Cruise Automation, leading ops and growth for Uber, and building apps that were featured on the Apple app store. We have staff and senior engineers from Google, Uber, Meta, Shopify, Stripe, Chime, and other leading technology companies.

We have raised $125 million+ from investors such as General Catalyst, Elad Gil, Bloomberg Beta, Y Combinator, XYZ; founders and CEOs of companies such as Google (Eric Schmidt), Salesforce (Marc Benioff), Coinbase (Brian Armstrong), DoorDash (Tony Xu), Instacart, Gusto; strategic investors like Mastercard, Flexport and Samsara.

We were named to Forbes annual Next Billion-Dollar Startup List, and have just recently been selected to join the World Economic Forum as a Global Innovator.

What You'll Do

Infrastructure & Kubernetes

• Scope and lead large, often ambiguous technical projects, laying the groundwork for early-stage products to iteratively evolve and scale

• Own and operate our Kubernetes (EKS) infrastructure, managed via the Porter orchestrator

• Apply and enforce Kubernetes best practices: resource management, health checks, autoscaling, pod disruption budgets, and graceful rollout strategies

• Tune deployments and cluster configuration for zero-downtime releases and high availability

• Design and improve CI/CD pipelines for fast, reliable, and safe delivery

• Contribute to observability, alerting, and incident response practices across the platform

Must-Have

• 8-12 years Deep expertise in Kubernetes — production operations, best practices, and performance tuning for zero-downtime architectures

• Strong CI/CD experience — designing, building, and maintaining pipelines at scale

• Demonstrated hunger to learn modern data engineering — lakehouse architectures, Iceberg, CDC, transformation frameworks (e.g., dbt or coalesce.io or others)

• Strong SQL skills and the ability to optimize queries for performance and cost

• Excellent cross-functional collaboration skills — comfortable working directly with BizOps and other non-engineering stakeholders

• Ownership mindset — able to take systems from design through operation end to end

Nice-to-Have

• Cross-region architecture experience (multi-region failover, DR, data replication)

• Cross-tenant / multi-tenant architecture expertise

• Experience with Apache Iceberg, AWS Glue, or other lakehouse catalogs

• Experience with EKS, Porter, or similar Kubernetes management platforms

• Familiarity with modern data stack tooling: dbt, Snowflake, CDC tools (Debezium, Estuary, etc.)

• Experience in fintech or other regulated environments (PCI DSS, SOC 2)

Why You Should Join

• Shape a greenfield data platform built on modern lakehouse foundations

• Real ownership across infrastructure and data — small team, high impact

• Work at the intersection of platform engineering and data engineering, two of the fastest-growing disciplines in the industry