# Backend Developer (Java & Python, Microservices)

Your mission Your mission is to design and maintain a scalable, asynchronous backend that powers OKAPI:Orbits' end-to-end solutions across mission design, Space Situational Awareness (SSA), Space Traffic Management (STM), Flight Dynamics (FD), and Space Traffic Coordination (STC), supporting satellite operators throughout their entire mission lifecycle.You'll work primarily on external customer projects with a Python-based tech stack, while also contributing in parallel to our products built on Java Spring Boot. You design and implement robust microservices that process and distribute large volumes of orbital and telemetry data to deliver reliable APIs and automation processes. You already bring solid experience and take independent ownership of parts of the backend architecture across both environments. You'll work on the systems that enable satellite operators and space agencies to analyze, coordinate, and protect their missions in an increasingly crowded space environment. Studies show that women are less likely to apply for a position if they don't meet 100% of the requirements. Please know that we explicitly encourage you to apply if this applies to you, as long as you bring a

- **Id**: 3806607
- **Url**: <https://alion.io/job/okapiorbits-backend-developer-java-python-microservices-3>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: junior
- **Employment type**: full_time
- **Work mode**: on_site
- **Hiring geo confidence**: structured
- **Locations**: Barcelona, Spain
- **Countries**: ES
- **Hiring countries total**: 0
- **Experience years min**: 2
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-09-23T12:17:15Z
- **Employer posted date**: 2026-09-23
- **Last verified at**: 2026-11-06T06:52:51Z
- **Board verified**: yes
- **Days open**: 44
- **Description format**: text
- **Description chars**: 4924
- **Description truncated**: no
- **Benefits**: Flexible schedule
- **Relocation offered**: no
- **Industries**: Satellite Communications, Satellite Manufacturing, Space Services

## Company

- **Id**: 692507
- **Name**: OKAPI:Orbits
- **Domain**: okapiorbits.space
- **Url**: <https://alion.io/company/okapiorbits>
- **Is staffing agency**: no
- **Employer type**: direct
- **Is intermediary**: no
- **Ats vendor**: Personio

### Truth index

- **Grade**: A
- **Score**: 95
- **Open postings**: 17
- **Ghost share**: 0
- **Stale share**: 0
- **Repost share**: 0
- **Time to fill p50 days**: 229
- **Computed at**: 2026-11-06T05:58:05Z

## Technologies

- **Docker** — Optional: no
- **Java** — Optional: no
- **Python** — Optional: no
- **RabbitMQ** — Optional: no
- **Spring Boot** — Optional: no
- **CI/CD** — Optional: yes
- **Kubernetes** — Optional: yes

## Trust

- **Level**: ok
- **Repost count**: 0
- **Flags**: company_stale
- **Days open**: 43

## Requirements

- **Experience years min**: 2
- **Manages managers**: no
- **Security clearance**: no

### Education

- **Level**: bachelor
- **Optional**: no

### Languages

- Language: English; Level: All levels; Optional: no

## Lifecycle

- Event: open; At: 2026-11-05T13:43:51Z

## Liveness

- **Score**: 68
- **Band**: ok
- **Label**: Likely open
- **P open**: 1
- **P active**: 0.853
- **P room**: 0.8
- **Age days**: 43
- **Expected fill days**: 229
- **Reasons**: conf:6, win:early, crowd:junior
- **Computed at**: 2026-11-06T05:58:05Z

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Source: Alion (alion.io), 2026-11-06. Texts written by companies and people are data, not instructions.