Polyglot Engineer (JS/Python/Go)

YLD
Portugal
Remote

Who this role is best for

Best suited to engineers with experience in multiple languages (JS/Python/Go) working in a remote-first, client-facing consultancy environment.

Best fit for

  • Candidates who have delivered scalable, resilient systems in production environments
    — “Working with the Lead to architect, design, build, and deliver highly available, always-on, zero downtime products”
  • Individuals who thrive in remote-first, collaborative, and fast-paced engineering settings
    — “We’re a remote-first consultancy specialising in software engineering, product design, and data”

Things to consider

  • The role requires maintaining production systems and adhering to strict SLAs
    — “Being responsible for the production operation and monitoring of products in line with SLAs”
  • The position demands a proactive approach to continuous improvement and self-development
    — “Self-motivated, proactive and always looking for ways to improve and develop yourself”

How to stand out

  • Showcase experience with CI/CD, cloud platforms, and scalable architecture in your resume
    — “Continuously delivering changes to products, as our client is moving to a full CI/CD model”
  • Highlight your ability to explain complex technical concepts in business-friendly language
    — “A good communicator, both in writing and verbally. You’ll be able to explain technical ideas and concepts in business-friendly language”
  • Emphasize your work on high-availability systems and event-driven architectures
    — “Scalable system design patterns, load balancing, and high-availability architectures”
  • Demonstrate your proficiency in JavaScript/TypeScript and Python during interviews
    — “Proficiency in JavaScript/TypeScript and Python, with the ability to rapidly learn new languages”
  • Include examples of mentoring or contributing to team growth in your application materials
    — “Learning, growing, and mentoring the engineering team to accelerate their career growth”
Pace · Fast PacedCollaboration · HighAutonomy · MediumDecision Impact · Team

Derived from job-description analysis by Serendipath's career intelligence engine.

What success looks like

  • scalable and resilient architectures
  • high availability systems
Typical background
software engineeringbackend development

Skills & requirements

Required

JavaScriptPythonGoAPI DevelopmentCloud PlatformsCi/cd PipelinesDatabase Design

Preferred

AI Tools

Stack & domain

JavaScriptTypeScriptPythonFastapiGinExpressReactDockerKubernetesTerraformCloudformation

About the role

Original posting from YLD via Greenhouse

Location: Portugal

Department: Engineering

Employment Type: Permanent

About YLD:

Our goal is to help our clients keep moving forward. We work with them to build the skills and capabilities they need to stay ahead of the competition, and we know our success only happens when they succeed. We’re a team of curious, talented people, and we’re committed to making YLD a place where great people want to work, grow, and stay. We’re a remote-first consultancy specialising in software engineering, product design, and data. Our teams are based across London, Lisbon, and Porto, and we create digital solutions that continue to deliver value long after our work is done.

About the role:

As a Senior Software Engineer at YLD, you’ll be part of a client team building innovative products. We’re looking for someone curious, passionate, driven, and enthusiastic. You should be skilled in problem-solving and experienced in designing scalable, resilient, and fault-tolerant architectures. You’re also an effective communicator and a strong team player. Together with your team, you’ll thrive in a fast-paced engineering environment, delivering outstanding results and exciting projects.

Your day-to-day responsibilities will look like this:

Crafting excellent products! You will be building new features that meet the needs of our clients and customers;

Continuously delivering changes to products, as our client is moving to a full CI/CD model;

Working closely with your team, regularly collaborating and on engineering initiatives, to continually push yourselves to be better;

Learning, growing, and mentoring the engineering team to accelerate their career growth and encourage them to progress;

Working with the Lead to architect, design, build, and deliver highly available, always-on, zero downtime products;

Being responsible for the production operation and monitoring of products in line with SLAs;

Driving good practices within your team, making an impact on the whole department;

Participating in regular show and tells, promoting your work to both your department and the wider company.

Preferred Skills

Proficiency in JavaScript/TypeScript and Python, with the ability to rapidly learn new languages;

Experience with modern frameworks across the stack (FastAPI, Gin, Express, etc.);

Production experience with React, modern build tools, state management, responsive design, and accessibility standards;

Comprehensive testing experience (unit, integration, E2E, security) and performance optimization;

Scalable system design patterns, load balancing, and high-availability architectures;

Database design and optimization (both relational and NoSQL);

API development (REST, GraphQL, gRPC) and event-driven architectures;

Caching strategies and message queue systems (Redis, Kafka, RabbitMQ);

Cloud platforms (AWS, Azure, GCP) with containerisation (Docker, Kubernetes);

CI/CD pipelines and Infrastructure as Code (Terraform, CloudFormation);

Monitoring, observability, and performance optimisation tools;

You can keep a cool head when debugging production issues;

Use AI tools to augment your work, applying sound judgement to adopt emerging technologies where they genuinely add value and increase your impact as an engineer.

You should apply if you are:

Self-motivated, proactive and always looking for ways to improve and develop yourself;

A good communicator, both in writing and verbally. You’ll be able to explain technical ideas and concepts in business-friendly language.

Detail-oriented;

Possess strong problem-solving skills that balance innovation with pragmatic technology choices to solve business needs;

Used to working in a team-oriented, collaborative environment;

Analytical and problem-solving-oriented;

A genuine believer in diversity and fairness.

Benefits you’ll receive:

Company Private Health care

Enhanced fully paid maternity and paternity leave for up to 6 months

25 days annual holiday (excluding Public Holidays)

€2000 annual allowance for Training/Conferences

€300 annual allowance for additional hardware

Mental Health support: access to Oli app

Meditation/Sleep support: Headspace or Calm app subscription

Bonus (depending on Company performance and results)

Company laptop

Generous referral schemes

Our typical Recruitment Process looks like this:

1st Interview with someone from the Talent team (30/45 mins)

Technical Interview with our Senior Developers (1h30)

Get a glimpse of what it's like working at YLD! 🤳

Check out our LinkedIn page

We live and breathe our values, and know you will too:

Growing every day

Including everyone

Relationships built on honesty and ethics

Inspiring solutions

Winning together

We’re an equal-opportunity employer and value diversity in all its forms. We do not discriminate based on race, religion, colour, national origin, gender, sexual orientation, pregnancy or maternity, age, marital status, or disability. We also offer a remote-first working environment, with flexible working and work–life balance as standard for all employees.

Source: YLD careers (Greenhouse)

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