GoLang Backend Engineer

Full-time remote work


4code is an Innovation Technology & Consulting company focused on secure software and product development. Connecting with the shared core values of Courage / Delivery / People / Trust, we work with technology that makes a difference and has a tangible impact on everyone’s life, proudly being part of business and digital transformations.


We are looking for an experienced and highly skilled Senior/Lead Engineer to join our team and help build industry-leading APIs with strong standards and best practices.

We aim to revolutionize business in the digital age through crypto payments. Our mission is to remove the complexities of chains, payment rails, and currencies, providing a seamless and integrated experience for everyday users. Our goal is to make crypto payments as easy as using a card.
As trusted partners, we commit to providing innovative solutions tailored to our clients’ needs, insightful data to optimize payment performance, and expert guidance to navigate the evolving web 3 landscape.


Your key responsibilities


  • Lead the design, development, and maintenance of highly scalable, reliable, and secure APIs
    for our crypto payment platform,
  • Collaborate with cross-functional teams, including product, engineering, and business development, to define API requirements and align with overall product vision,
  • Ensure compliance with industry standards, best practices, and regulatory requirements related to API design and implementation,
  • Drive the adoption of modern API development frameworks and tools to improve efficiency, performance, and maintainability,
  • Establish and maintain robust API documentation to facilitate seamless integration for both internal and external developers,
  • Monitor, troubleshoot, and optimise API performance to ensure high availability and low latency,
  • Mentor and guide junior developers, fostering a culture of knowledge sharing and continuous improvement.

Skills required:


  • 5+ years of experience in software development, with a focus on building and maintaining RESTful and/or GraphQL APIs,
  • Deep understanding of API design principles, patterns, and best practices,
  • Experience with relational databases, especially PostgreSQL,
  • Experience with serverless architecture patterns,
  • Strong experience with modern API development frameworks and tools, such as GoLang / Gin / Martini or Node.js / Express, Apollo, NestJS or similar,
  • Proficiency in programming languages, such as GoLang – JavaScript, TypeScript and Python are a plus but not necessary,
  • Familiarity with blockchain technologies, cryptocurrencies, and related protocols (e.g.,
    Ethereum, Layer 2s, smart contracts),
  • Knowledge of API security best practices, including authentication, authorization, and encryption,
  • Experience with API testing tools and methodologies, such as Postman, Swagger, or similar,
  • Strong problem-solving skills and ability to work independently and within a team,
  • Excellent communication skills, both written and verbal.


Ideally, you’ll also have


  • Experience with Web3 technologies and decentralized finance (DeFi) platforms,
  • Familiarity with API management platforms and tools, such as Kong, Tyk, or Apigee,
  • Knowledge of cloud-based architectures and deployment, particularly with AWS, Azure, or Google Cloud Platform,
  • Very high bias for action with strong critical thinking skills,
  • Not afraid to speak up / challenge the status quo,
  • Take full ownership,
  • Pro athlete team collaboration and performance mindset.

Why it’s worth joining us?

Health care

Individual training budget

Fully remote work

Flexible working hours

Unique working atmosphere

Family-friendly community

Knowledge sharing with developers with extensive experience

In-house training programs (Angular, IOS, Android, CyberSecurity Leadership)

Recruitment Process



After we receive your CV you will have a short conversation with HC, during which we will initially tell you about 4code, the project and the role that interests you, and we will gladly hear about your expectations.


We invite you to a 1-hour meeting with HC and a technical person, during which we will get to know each other better, talk about your experience and the possibilities we have for you.


The client is also very happy to meet you. There will be one or two interviews with him, if necessary.


We will get back to You with the results of the recruitment regardless of the outcome. Hopefully it will always be good news.

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