Senior Elixir Developer - USA

Lever, Inc.; Washington; Remote; USD 120,000 - 190,000; Full time

Benefits offered by this job

100% Remote (US)

Job summary

Coderio seeks a Senior Elixir Developer to join our remote-first team building scalable backend systems for global clients. You will design, build, and maintain distributed services with low latency and high concurrency, using Elixir, Phoenix, Ecto, and OTP, while mentoring teammates and guiding architectural decisions.

This role emphasizes collaboration with product, DevOps, and frontend colleagues in an agile environment, with a strong focus on code quality, testing, and scalable design.

Qualifications

• 5+ years of software engineering experience in Backend Development
• Proficiency with Elixir, Phoenix Framework, Ecto, and OTP

Responsibilities

• Design, build, and scale highly concurrent backend applications and microservices using Elixir and Phoenix.
• Architect and implement resilient, distributed systems leveraging the BEAM ecosystem and OTP (GenServer, Supervisors, Tasks).
• Design, build, and integrate RESTful and/or GraphQL APIs.
• Optimize database queries and schema models using Ecto with PostgreSQL and non-relational databases.
• Enforce code quality, maintainability, and test coverage through unit testing, integration testing, and rigorous code reviews.
• Partner with product managers, DevOps engineers, and frontend developers in an agile environment.
• Participate in high-level architectural discussions, system design, and establishing engineering best practices.

Skills

Elixir

Phoenix Framework

Ecto

OTP

Functional programming

PostgreSQL

REST/GraphQL APIs

Tools

Docker

Kubernetes

AWS

Job description

$0 - $0 a month

About Us

Coderio designs and develops scalable digital solutions for global companies. We combine deep technical expertise with a product-driven mindset to lead complex software initiatives end-to-end. Working with international clients, we value autonomy, clear communication, and long-term relationships built on technical excellence. Learn more: coderio.com

Location: 100% Remote (Must be based in the United States).

Role Overview

We are looking for a Senior Elixir Developer to join our engineering teams working on high-impact scalable products. In this role, you will play a key part in designing, building, and maintaining distributed, fault-tolerant backend systems with low latency and high concurrency. We are looking for an experienced software engineer with a strong background in functional programming, capable of driving architectural decisions, mentoring teammates, and collaborating with cross-functional global stakeholders.

What To Expect In This Role (Responsibilities)

• Design, build, and scale highly concurrent backend applications and microservices using Elixir and Phoenix.

• Architect and implement resilient, distributed systems leveraging the BEAM ecosystem and OTP (GenServer, Supervisors, Tasks).

• Design, build, and integrate RESTful and/or GraphQL APIs.

• Optimize database queries and schema models using Ecto with PostgreSQL and non-relational databases.

• Enforce code quality, maintainability, and test coverage through unit testing, integration testing, and rigorous code reviews.

• Partner with product managers, DevOps engineers, and frontend developers in an agile environment.

• Participate in high-level architectural discussions, system design, and establishing engineering best practices.

Requirements

• Experience: 5+ years of software engineering experience in Backend Development, with at least 3+ years of active experience with Elixir.

• Deep proficiency in the Elixir ecosystem: Phoenix Framework, Ecto, and OTP.

• Solid understanding of functional programming concepts and design patterns.

• Hands-on experience with relational databases (PostgreSQL) and mapping tools (Ecto).

• Demonstrated experience designing and integrating APIs (REST, GraphQL).

• Exposure to microservice architectures, message brokers (Kafka, RabbitMQ), and caching layers (Redis).

Nice to Have

• Experience with Erlang.
• Familiarity with containerization and orchestration platforms (Docker, Kubernetes).
• Hands-on experience with cloud environments (AWS, GCP, or Azure) and CI/CD pipelines.
• Exposure to Phoenix LiveView.
• Open-source contributions within the Elixir / BEAM community.

Benefits

• 100% Remote position within the US.
• Long-term commitment with strategic impact on modern tech stacks.
• Collaborative, engineering-first culture with high technical autonomy.
• Career growth path, leadership opportunities, and continuous learning support.

Why Join Coderio?

At Coderio, we value top engineering talent. We are a remote-first company passionate about modern technology, collaborative innovation, and building high-quality software. We offer an inclusive, challenging environment with clear opportunities for professional impact and technical ownership. If you enjoy functional programming, solving scalability challenges, and building high-performance systems, we’d love to meet you!

We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses and identifying potential inconsistencies or verification signals in application materials based on available information. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.