Elixir Developer
full-time•Spain
About this role
Every day, somewhere in the world, important decisions are made. Whether it is a private equity company deciding to invest millions into a business or a large corporation implementing a new strategic direction, these decisions impact employees, customers, and other stakeholders.
Consulting and private equity firms come to proSapient when they need to discover knowledge to help them make great decisions and succeed in their goals. It is our mission to support them in their discovery of knowledge.
We help our clients find industry experts who can provide their knowledge via interview or survey: we curate this knowledge in a market-leading software platform; and we help clients surface knowledge they already have through expansive knowledge management.
We’re seeking an Elixir Developer who’s ready to take on exciting technical challenges and make an impact on a global scale. You’ll play a key role in developing robust, scalable applications that power our industry-leading platform - helping the world’s top firms make smarter, faster decisions. Join a team that values innovation, collaboration, and continuous growth.
Our Product & Engineering team spans multiple locations, but we’re excited to be building a vibrant Engineering Hub in Lisbon, Portugal. Being based in or relocating to Portugal is a big plus.
We work hybrid, combining flexibility with connection — and we love getting together in the office now and then to collaborate, share ideas, and stay close as a team.
Key Responsibilities
- Develop and maintain scalable, efficient, and high-quality Elixir web applications.
- Design, optimize, and troubleshoot SQL queries and performance issues.
- Collaborate with cross-functional teams to design and implement new features and improvements.
- Write clean, maintainable, and testable code adhering to industry best practices.
- Contribute to architectural decisions and optimize system performance.
- Proven experience in building and maintaining Elixir-based web applications (e.g., knowledge of Phoenix).
- Strong understanding of SQL, including profiling and building efficient queries.
- Solid problem-solving skills and the ability to troubleshoot complex systems.
- BS/MS in Computer Science or equivalent industry experience
- Proficiency in English to effectively communicate with the product team.
Bonus Skills
- Familiarity with Absinthe (GraphQL) and Oban (Job Processing).
- Knowledge of DevOps practices and deployment pipelines.
- Experience working in the SaaS or FinTech industry.
- AI/ML/LLMs, understanding of agentic architectures, workflow optimisation, prompt engineering
What we can offer you:
- Tenure Gifts - Vouchers, extra holiday and sabbaticals for each year of employment.
- Health insurance
- Enhanced Maternity & Paternity pay.
- Corporate Events - From quarterly gatherings to our annual winter & Summer parties, we love to celebrate, collaborate and have fun together!
We are committed to building an inclusive workplace – did you know that marginalized groups are less likely to apply to jobs unless they meet every requirement listed? If you are interested in the above role, but don’t necessarily tick every box, we encourage you to apply anyway – this role could still be a great match! Take a look at our diversity statement here.
What you'll do
- Develop and maintain scalable, efficient, and high-quality Elixir web applications. Collaborate with cross-functional teams to design and implement new features and improvements.
About proSapient
proSapient is a cutting-edge expert network and primary research platform that enables professionals to share insights with clients through short calls, online surveys and long-term engagements.
Our clients include many of the world’s largest and most respected consultancy and private equity firms, and we have been featured in the Financial Times and in Sifted as one of the 100 fastest-growing businesses in Europe and the UK.
Since our launch in 2017, we have revolutionized expert networking by offering new capabilities including the industry’s first AI-powered platform, enabling smarter, faster decision-making. Headquartered in the UK, proSapient is ISO 27001 accredited and employs over 300 people across four global locations: London, Lisbon, Raleigh, and Toronto.
Should an opportunity arise where we think your experience could be relevant for an expert call, one of our Client Services Associates will contact you and help to determine whether there is a suitable fit, agree a rate to compensate you for your time and then submit your profile to our client. Our client then decides whether to work with a given expert and should they wish to move forward, our Associate will assist in scheduling a call at a suitable time.
We are continuously reimagining the expert networking landscape and remain at the forefront of technological innovation, committed to building the future of knowledge discovery. In recognition of our technological leadership, we've been recognized as a Future Fifty company by Tech Nation.
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Frequently Asked Questions
What does a Elixir Developer do at proSapient?
As a Elixir Developer at proSapient, you will: develop and maintain scalable, efficient, and high-quality Elixir web applications. Collaborate with cross-functional teams to design and implement new features and improvements..
Is the Elixir Developer position at proSapient remote?
The Elixir Developer position at proSapient is based in Spain, Spain. Contact the company through Clera for specific work arrangement details.
How do I apply for the Elixir Developer position at proSapient?
You can apply for the Elixir Developer position at proSapient directly through Clera. Click the "Apply Now" button above to start your application. Clera's AI-powered platform will help match your profile with this opportunity and guide you through the application process.