---
title: "Freelance Backend Software Engineer"
company: "Beyond Sports"
company_url: "https://www.remjobs.works/companies/beyond-sports"
url: "https://www.remjobs.works/job/beyond-sports-freelance-backend-software-engineer-12650e1d-86b8-4506-82da-e31b1e4676c4"
apply_url: "https://jobs.ashbyhq.com/wearebeyondsports/dc07a4da-aacd-4bd2-9408-3f5227b0e489"
workplace: hybrid
location: "Hungary, Budapest"
employment_type: contract
seniority: mid
role: software-engineering
region: europe
skills: ["aws", "azure", "docker", "java", "kafka", "kubernetes", "mysql", "postgres", "terraform"]
date_posted: 2026-08-24T18:05:19.284Z
first_seen_by_remjobs: 2026-09-19T22:08:32.859Z
---

# Freelance Backend Software Engineer

**Beyond Sports** · Hungary, Budapest

Apply: https://jobs.ashbyhq.com/wearebeyondsports/dc07a4da-aacd-4bd2-9408-3f5227b0e489

## About Beyond Sports

Beyond Sports is a data visualization company operating at the intersection of sports, technology, and immersive storytelling. The company helps sports rightsholders create innovative experiences that resonate with the next generation of sports fans through the power of data.

## About the role

#### Senior Backend Java Engineer (Freelance Contract) – Hungary

**Contract Length:** 3+ Months
**Start Date:** ASAP
**Day Rate:** 120,000 HUF – 180,000 HUF per day
**Location:** Hungary

**About the Role**

Beyond Sports is looking for an experienced **Senior Backend Java Engineer** to support the development, scaling, and modernisation of our high-performance backend systems and cloud infrastructure.

This is a hands-on freelance contract opportunity for a senior engineer with deep Java expertise, strong cloud experience, and a passion for building resilient, scalable systems. You’ll work closely with cross-functional engineering teams to refactor core microservices, improve system architecture, and ensure low-latency integrations across our web and mobile platforms.

**Key Responsibilities**

- Design, refactor, and maintain scalable backend microservices and REST APIs using Java and Spring Boot

- Re-architect existing backend systems to optimize for maintainability, reliability, and throughput

- Implement secure identity, secrets management, and authentication standards across cloud environments

- Integrate third-party systems, including real-time sports data feeds, video streams, and commentary providers

- Deploy and manage containerised services using Docker and Kubernetes

- Provision and maintain cloud infrastructure using Infrastructure as Code (IaC) tools like Terraform

- Build, automate, and manage deployment workflows using modern CI/CD pipelines

- Monitor, troubleshoot, and optimize application and database performance

- Participate in technical planning, architectural discussions, and peer code reviews

- Produce clear, maintainable technical documentation for APIs and core backend systems
**Required Skills & Experience**

*Essential*

- Strong commercial contracting experience with Java and Spring Boot

- Proven background building, deploying, and maintaining applications in production cloud environments (AWS or Azure)

- Hands-on experience with containerisation and orchestration using Docker and Kubernetes

- Expertise in designing and building secure, high-traffic RESTful APIs

- Practical experience writing Infrastructure as Code using Terraform

- Solid working knowledge of relational and NoSQL databases (e.g., PostgreSQL, MySQL, DynamoDB, Cosmos DB)

- Deep understanding of cloud security fundamentals (IAM, secrets management, key vaults)

- Experience setting up and maintaining CI/CD pipelines (e.g., GitLab CI, Bitbucket Pipelines, or ArgoCD)*Desirable*

- Experience with event-driven architectures using Apache Kafka or similar messaging systems

- Prior exposure to performance tuning and cloud cost-optimisation strategies

- Strong automated testing practices (unit, integration, and regression testing)

- Understanding of cloud networking components (VPCs/VNets, API Gateways)

---

Source: Beyond Sports's own career page, read by RemJobs. Canonical HTML version: https://www.remjobs.works/job/beyond-sports-freelance-backend-software-engineer-12650e1d-86b8-4506-82da-e31b1e4676c4