Senior Elixir Engineer → Location: Lund, Sweden

Cytely; Lunds kommun; On-site; SEK 900,000 - 1,200,000; Full time

Job summary

Cytely in Lund, Sweden, is seeking a Senior Elixir Engineer to define backend systems and real-time experiences powering our research platform. You will architect scalable Elixir/OTP services, lead backend development on the PETAL stack, and collaborate with scientists and designers to translate complex biology into delightful, reliable software.

The role emphasizes performance, observability, and long-running workflows, with a strong focus on code quality, mentoring, and delivering robust data

Qualifications

• Proven experience shipping PETAL stack apps (Elixir/Phoenix/LiveView).
• Deep Elixir/OTP knowledge with concurrency, supervision and reliability.
• Strong product/design collaboration and user-centric engineering.
• Nice-to-have: advanced degree in a relevant field.

Responsibilities

• Lead development of the PETAL stack SaaS using Phoenix, Elixir, TailwindCSS, Alpine.js, LiveView.
• Engineer core features like one-click assays and a visual pipeline builder.
• Collaborate with scientists and designers to translate research into scalable solutions.
• Design secure Elixir/OTP systems for complex data, real-time interactions and long‑running workflows.
• Champion code quality through best practices, reviews, and performance/reliability focus.
• Build backend services powering interactive, publication‑ready graphs and shareable datasets.
• Architect backend + LiveView interactions for researcher co‑pilot; develop real-time components for workflows.

Skills

Elixir

Phoenix

LiveView

Distributed systems

Mentoring

Code reviews

Education

Advanced degree in CS/Bioinformatics

Tools

OTP

GenServers

LiveView

Job description

At Cytely, we’re building a world where science accelerates itself - where every experiment becomes a reusable asset, every insight compounds, and every researcher is amplified.

As our Senior Elixir Engineer, you will define the backend systems and real-time experiences that power our platform. Your mission is to translate the complexity of biological research into a simple, elegant, and powerful product that feels like a natural extension of a scientist's mind - building robust, scalable, and delightful tools that accelerate our urgent mission.

Key Responsibilities

• Lead development and optimization of our SaaS using the PETAL stack (Phoenix, Elixir, TailwindCSS, Alpine.js, LiveView).
• Engineer core functionality for concepts like ‘one-click assays’ and a ‘visual pipeline builder’.
• Collaborate closely with scientists and designers to turn deep user research and complex requirements into robust, scalable solutions.
• Design and implement secure, maintainable Elixir/OTP systems for complex data, real-time interactions, and long‑running workflows.
• Champion technical excellence: best practices for Elixir and LiveView, thoughtful code reviews, mentoring, and performance/reliability focus.
• Build backend services that power interactive, publication‑ready graphs and shareable datasets to compress time from experiment to insight.
• Example projects: Architect backend + LiveView interactions for a researcher’s co‑pilot; build GenServers and real‑time components for a drag‑and‑drop workflow builder; develop infrastructure for sharing dynamic, re‑analyzable datasets; scale data ingestion and processing pipelines.

Qualifications

• Proven experience building and shipping complex PETAL stack applications (Elixir/Phoenix/LiveView).
• Deep Elixir/OTP knowledge with strong grasp of concurrency, supervision, and system reliability.
• Systems thinking with a long‑term architectural mindset for scalability and maintainability.
• User‑centric engineering: strong product sense; comfortable collaborating closely with product/design.
• Excellence in code quality: testing, performance profiling, observability, and rigorous reviews.
• Advanced degree in CS/Applied Physics/Mathematics/Bioinformatics or equivalent experience (nice‑to‑have, not required).
• Genuine passion for accelerating science and solving problems that matter.
• Interest or experience in biomedicine, bioimaging, computational biology, or life sciences; fast learner in new domains.

Cytely is an equal-opportunity employer. We celebrate diversity and are committed to an inclusive environment for all employees.