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Elladium Holding Ltd.

Back-End Developer Intern

Elladium Holding Ltd.
Estonia · Internship · Internship

Back-End Development Internship


Unpaid | Remote or Hybrid

Launch your back-end development career with hands-on experience building real production systems using modern technologies.

We are seeking a motivated and detail-oriented Back-End Development Intern to join our engineering team. This internship is unpaid, but it offers valuable real-world experience, close mentorship from experienced developers, and the opportunity to grow into a long-term role within the company.



Internship Details

  • Role: Back-End Development Intern
  • Location: Remote or Hybrid
  • Duration: 3–6 months
  • Compensation: Unpaid
  • Start Date: Flexible



What You’ll Work On

As a Back-End Development Intern, you will contribute to the development and maintenance of scalable backend systems. You’ll work closely with the engineering team on real features and services, gaining exposure to production-level architecture and workflows.

Your responsibilities will include:

  • Designing and developing RESTful APIs
  • Building backend services using Golang and the Echo framework
  • Working with PostgreSQL and managing queries using sqlc
  • Integrating third-party services such as Stripe
  • Implementing logging and observability using Zerolog and OpenTelemetry
  • Using Valkey for caching
  • Working with background processes and messaging via NATS (email-related use cases)
  • Developing and running services in Docker containers
  • Applying web application security best practices



Required Skills

  • Strong understanding of RESTful API design
  • Proficiency in Golang
  • Experience with the Echo framework
  • Solid SQL knowledge with PostgreSQL
  • Experience using sqlc for type-safe database access
  • Familiarity with logging and telemetry tools (Zerolog, OpenTelemetry)
  • Understanding of caching mechanisms (Valkey)
  • Basic experience with NATS
  • Experience integrating payment systems (e.g., Stripe)
  • Knowledge of Docker and containerized development
  • Awareness of backend security best practices



Nice to Have

  • Experience with CI/CD pipelines
  • Exposure to cloud platforms such as AWS or GCP
  • Knowledge of other message brokers
  • Experience with unit and integration testing in Go
  • Understanding of microservices architecture



What You’ll Gain

  • Hands-on experience with production-grade Golang systems
  • Direct mentorship from experienced backend engineers
  • Flexible working hours
  • Exposure to modern backend tools and architectures
  • Opportunity to transition into a paid role based on performance
  • The chance to work on real projects that make an impact


Key Skills

Ranked by relevance

microservices golang cloud cicd sql
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Posted
Jun 18, 2026
Type
Internship
Level
Internship
Location
Tallinn

Industries

Software Development

Categories

Engineering Information Technology

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