Senior Elixir Fullstack Software Engineer

About the client

Our client is a UK-based software provider that delivers end-to-end administration and operational management systems for funeral directors and industry professionals. The platform, including its next-generation software (NexGen) and dedicated support ecosystem, helps funeral service teams streamline client onboarding, manage custom workflows, automate document and template creation, and maintain seamless day-to-day operations.

Project

The project involves scaling and evolving the technical architecture behind the Funeral Manager platform. We are actively running a dual-stack setup while executing a progressive migration strategy:

• Legacy Stack: A Ruby, Ruby on Rails, and Angular environment supporting core features, operational configurations, and active user workflows.
• Next-Gen Stack: A modern Elixir, React, GraphQL, and WebSockets setup designed with Functional Domain-Driven Design (DDD), Hexagonal Architecture, and Event Sourcing.
• Migration Strategy: Utilizing the Strangler Fig pattern to progressively migrate functionalities from the Ruby/Rails monolithic architecture to the Elixir event-driven system without disrupting client operations.

The core infrastructure is fully hosted on AWS (EBS, ECS, Fargate, Aurora) with CircleCI handling the CI/CD pipeline.

Team

Our team is small but mighty, and every new hire makes a real difference.

Leadership: CEO and CTO drive the company's vision and technical strategy.

Product & Engineering: Our Junior Ruby Full-Stack Developer, is actively building and evolving our platform.

Customer Support: A team of 3 dedicated to keeping our users happy.

Responsibilities

Responsibilities

• Support & Maintenance: Assist the Junior Ruby Full-stack developer and the customer support team by resolving technical issues, troubleshooting bugs, and improving application performance.
• Legacy System Support: Maintain and build new features within the legacy Ruby / Rails / Angular application.
• Modern Stack Development: Design, build, and deliver scalable new features in the Elixir / React architecture.
• Architecture & Migration: Apply Strangler pattern principles to safely migrate existing capabilities from Rails to the Elixir event-driven ecosystem.
• System Design: Implement functional domain-driven designs, actor-based aggregates, event handlers, process managers, and stateful persistence models.
• API & Frontend Integration: Develop GraphQL endpoints, WebSocket streams, and responsive React frontend components backed by TanStack and Storybook.

Requirements

Candidate Requirements

Must-have

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Ruby & Ruby on Rails: Proven commercial experience maintaining and extending backend systems on Rails.

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Elixir: Demonstrated hands-on experience building systems with Elixir in production environments.

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React Development: Strong frontend experience with React and modern frontend libraries.

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Architecture Patterns: solid understanding of Functional Domain-Driven Design (DDD), Hexagonal Architecture (Ports & Adapters), and Event-Driven Architecture.

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Event Sourcing & Actor Models: Practical experience with Event Sourcing, stateful persistence, actor-based aggregates, event handlers, and process managers.

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System Migration: Hands-on experience or solid conceptual understanding of the Strangler pattern for legacy code migration.

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APIs & Real-Time Data: Solid proficiency with GraphQL and WebSockets.

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Databases & Cache: Experience working with relational databases (PostgreSQL) and caching tools (Redis).

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AWS & Infrastructure: Hands-on knowledge of AWS services, specifically EBS, ECS, Fargate, and Aurora, along with CircleCI for automated CI/CD.

Strong plus / nice-to-have

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Angular: Experience or familiarity with legacy Angular codebases.

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UI/UX Testing & Component Isolation: Experience working with TanStack and Storybook.

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Domain Experience: Experience building SaaS or multi-tenant business management systems.

Benefits

• Interview process that respects people and their time
• Professional and open IT community
• Internal meet-ups and resources for knowledge sharing
• Time for recovery and relaxation
• Bright online and offline events
• Opportunity to become part of our internal volunteer community