Sedna Tech Stack

Data-driven communication platform for complex enterprise workflows

Software Development London, England 51–200 employees Founded 2017 Privately Held

Sedna builds a cloud-native communication and collaboration platform targeting high-stakes industries like maritime and global trade. The tech stack (Java/Kotlin + React + Kafka + PostgreSQL/Oracle + OpenSearch) reflects a polyglot backend designed for real-time data processing and document-heavy workflows. Active projects around reporting infrastructure, data governance, and platform modernisation, paired with persistent pain points in system reliability and support backlog, suggest Sedna is mid-transition: moving from legacy PL/SQL monolith toward a modular, event-driven architecture while scaling operational capacity.

Tech Stack 17 technologies

Core StackJava Kotlin React TypeScript AWS Kubernetes MySQL PostgreSQL Oracle Kafka Elixir Python SQL Jakarta EE Azure OpenSearch

ReplacingPL/SQL

What Sedna Is Building

◆Challenges

Knowledge base gaps
High availability and scalability
System reliability
High l2 support volume
Customer issue backlog
Reducing friction in go-to-market processes
Ensuring data integrity
Migrating legacy pl/sql to jakarta ee
Moving to modular scalable architecture
Customer support backlog

▲Active Projects

Build reporting infrastructure
Develop forecasting cadence
Implement data governance framework
Voyage management system (vms)
Complex invoicing logic migration
Platform modernisation
Customer lifecycle program design
Signal definition and prioritisation
Programmatic adoption operating model

Hiring Activity

Decelerating15 roles · 3 in 30d

Department

Support

Sales

Engineering

Ops

Operations

Seniority

Junior

Senior

Mid

Manager

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About Sedna

Sedna operates a B2B SaaS platform that reimagines email and messaging as a data-aware workspace for industries where communication complexity and regulatory requirements are high (maritime, logistics, trade). Founded in 2017 and based in London, the 51–200-person company serves mid-market and enterprise organisations operating across multiple time zones and locations. The product integrates messaging, documentation, and decision-support layers; backend infrastructure spans Java/Kotlin services on AWS and Azure, with Kafka for event streaming and multiple database backends (MySQL, PostgreSQL, Oracle). Hiring is concentrated in support and sales roles, with decelerating velocity; the company operates across five countries including the UK, South Africa, and Norway.

HeadquartersLondon, England

Company Size51–200 employees

Founded2017

Hiring MarketsSouth Africa, United Kingdom, Norway, Greece, Colombia

Frequently Asked Questions

What tech stack does Sedna use?

Sedna's backend runs Java and Kotlin on AWS/Azure with Kubernetes orchestration. Frontend is React/TypeScript. Data layer uses PostgreSQL, MySQL, and Oracle; streaming and search powered by Kafka and OpenSearch. The team is migrating legacy PL/SQL code to Jakarta EE.

Where is Sedna headquartered?

Sedna is headquartered in London, England. The company was founded in 2017 and is privately held, with 51–200 employees.