Lead Rails Architect (DRWN)

Darwin Recruitment; Warszawa; Remote; PLN 321,000 - 535,000; Full time

Job summary

Darwin Recruitment is seeking a Technical Lead / Rails Architect for a UK public sector project. This 100% remote freelance engagement is 6 months long, with nearshore/remote delivery and a requirement to be based in Poland, Portugal or Romania.

You will own architecture, lead Rails delivery, design APIs, and shape CI/CD pipelines while coordinating with stakeholders and ensuring best practices across the team.

Qualifications

• 5+ years of commercial Ruby/Rails experience.
• Hands-on Tech Lead or Architect on Rails apps.
• Strong API design experience (REST, versioning, docs).
• PostgreSQL schema design and performance tuning.
• Lead code reviews and set engineering standards.
• Build and improve CI/CD pipelines.
• Confident in client-facing communication with stakeholders.
• Experience delivering for UK public sector is desirable.
• Must be based in Poland, Portugal or Romania.

Responsibilities

• Lead the Rails delivery team as hands-on technical lead.
• Own the application architecture and API design.
• Set engineering standards and review code.
• Shape CI/CD pipelines and deployment practices.
• Engage with client stakeholders as senior technical voice.

Skills

Ruby

Ruby on Rails

API design

PostgreSQL

CI/CD

Code reviews

Stakeholder communication

UK public sector delivery

Remote work eligibility

Job description

Job title - Technical Lead / Rails Architect

Client Location - United Kingdom (remote, nearshore)

Remote work offering - 100%

Client Industry - Public Sector

Contract Length - 6 months

Contract type - Freelance (B2B)

Project focus

You'll be the hands-on technical lead for a Ruby on Rails delivery team building and modernising digital services for a UK public sector client. You'll own the application architecture and API design, set engineering standards, review code, shape the CI/CD pipeline and act as the senior technical voice in conversations with client stakeholders.

Key skills and Experience required

• 5+ years' commercial experience with Ruby, with deep Ruby on Rails expertise
• Proven track record as a hands-on Tech Lead or Architect on Rails applications
• Strong API design experience (REST, versioning, documentation)
• Solid PostgreSQL skills, including schema design and performance tuning
• Leading code reviews and setting engineering standards and best practice
• Building and improving CI/CD pipelines
• Confident client-facing communicator, comfortable working with technical and non-technical stakeholders
• Experience delivering for UK public sector clients is highly desirable
• Must be based in Portugal, Poland or Romania