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Highnote Tech Stack

Unified platform for embedded card issuing, credit, and payments

Software Development San Francisco, California 51–200 employees Founded 2020 Privately Held
highnote.com LinkedIn

Highnote operates a polyglot backend spanning Java/Spring, GCP, AWS, and Kubernetes, layered with stream processing (Kafka, Kinesis, Pub/Sub) and data warehousing (BigQuery, Redshift, Spanner). The tech mix—gRPC, Protocol Buffers, Cassandra, and recent AI tooling (LangChain, CrewAI, AutoGen)—suggests a infrastructure-first organization shipping low-latency, multi-tenant financial rails. Hiring is concentrated in senior and principal engineers across infrastructure and data, with minimal sales roles visible, indicating product-led positioning and internal focus on platform reliability and cost-efficient scaling at scale.

Tech Stack 30 technologies

Core StackJava AWS Docker Kubernetes gRPC BigQuery Redshift Istio Python Kafka PostgreSQL Cassandra LangChain Spring Salesforce Looker Spring Boot Spring Framework GCP Protocol Buffers Spanner Dataflow Pub/Sub Kinesis JPA CrewAI AutoGen Looker Studio OAuth

What Highnote Is Building

◆Challenges

  • Scaling infrastructure across continents
  • Scaling platform reliability
  • Improving security and stability
  • Cost-effective infrastructure
  • Improving monitoring and alerting
  • Troubleshooting distributed environment
  • Increase revenue
  • Building modern scalable data platforms
  • Manual macros overhead
  • Manual intervention

▲Active Projects

  • Infrastructure as a platform
  • Cloud infrastructure stack and ci/cd pipelines
  • Monitoring and alerting for infrastructure
  • Common application services
  • Secure and scalable data platforms
  • Data pipelines
  • Data driven decision making
  • Automated revenue recognition product

Hiring Activity

Steady6 roles · 1 in 30d

Department

Engineering
4
Data
1
Product
1

Seniority

Senior
5
Principal
1
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About Highnote

Highnote builds a cloud-native platform for embedded finance, allowing brands and digital enterprises to issue and manage payment products—physical and virtual cards, credit facilities, acquiring, and ledgering—through a single API surface. The product spans consumer, commercial, debit, credit, fleet, and charge card issuance with integrated spend controls and multi-party wallets. Founded in 2020 and based in San Francisco, the company operates as a privately held B2B fintech platform serving mid-market and enterprise digital commerce players. Active projects center on infrastructure scaling, distributed data pipelines, and revenue recognition automation, with documented pain points around continental infrastructure scaling, monitoring complexity, and manual operational overhead.

HeadquartersSan Francisco, California
Company Size51–200 employees
Founded2020
Hiring MarketsUnited States

Frequently Asked Questions

What tech stack does Highnote use?

Java, Spring Boot, GCP, AWS, Kubernetes, Docker, Kafka, Kinesis, BigQuery, Redshift, PostgreSQL, Cassandra, gRPC, Protocol Buffers, and Python, with emerging AI components (LangChain, CrewAI, AutoGen).

What is Highnote working on?

Infrastructure as a platform, cloud CI/CD pipelines, distributed data pipelines, monitoring and alerting systems, and an automated revenue recognition product.

How this profile is built

Highnote's technology stack, projects, and hiring signals are inferred from public hiring and company data — career pages, public listings, and company web presence — then clustered and de-duplicated. Figures are estimates that refresh over time. Read our full methodology →

This is not an official vendor or customer list. It is a technology-adoption signal inferred from public data, intended for B2B research.