Senior PHP Software Engineer (all genders)

JUMiNGO builds software for international shipping. Customers use our platform to manage international express shipments with carriers like DHL, UPS, FedEx, GLS and DPD. Logistics is complex - our goal is to make it manageable through well-structured, reliable software.

Our backend is the backbone of our product. It handles integrations, business logic and the stability our customers rely on every day. As our platform grows, so do the demands on performance, scalability and clean system design.

To further strengthen this foundation, we’re looking for a Backend Engineer (all genders) — full-time in Cologne or remotely within Germany. Sounds like your playground? Join us and apply now!

Your Mission

Take ownership of services and drive them from idea to production, from shaping requirements and technical design to implementation, rollout, and iteration
Design, build, and evolve backend services using PHP, Symfony, and API Platform powering our logistics platform used in real production scenarios
Work in a remote-first engineering setup with high autonomy, where decisions are made close to the code and ownership sits with the team
Model complex logistics workflows (rates, shipments, carrier integrations, tracking, billing) in a way that stays understandable and maintainable as the system grows
Build and evolve well-structured REST APIs with strong focus on consistency, performance, and developer experience
Integrate with multiple external carrier APIs (DHL, UPS, FedEx, etc.), handling reliability concerns like retries, idempotency, and failure recovery
Improve reliability and performance through profiling, query optimization, caching strategies, and pragmatic architectural decisions
Write automated tests that provide real value and support confident deployments
Collaborate asynchronously with frontend, product, and QA to deliver features end to end
Contribute to technical decisions, code reviews, and continuous improvement of engineering practices
Help evolve our service-oriented architecture pragmatically without chasing trends

What’s in Your Toolbox?

6+ years of professional backend experience and a passion for clean, efficient code
A proactive, self-improving mindset that thrives in agile teams
Proficiency in PHP and Symfony (bonus points for other frameworks)
Solid MySQL skills—you know your joins from your indexes
Familiarity with SOLID and DRY principles, OOP, and RESTful API design
Fluent English (German is a plus)

Perks That Deliver

Flex Your Schedule: Fully Remote working option with up to 12 days of “workation” per year
Recharge Your Batteries: Take up to 30 +1,5 days of vacation annually alongside the option to extend with unpaid vacation days
Stay Secure: Permanent contract with optional company pension plan
Feel Valued: Monthly €50 extra cash for literally anything you want (gym? movies? pizza?)
Work Smart, Live Easy: Ergonomic office in Cologne with Skygarden views—or enjoy the view from your own living room - up to you!
Stay Fueled: Free coffee, snacks, fruit, and discounted meals at our on-site restaurant
Pawsitive Vibes: Love dogs? So do we! Bring your furry friend to work (if they’re office-ready)
Celebrate Wins: Regular team events, from rooftop BBQs to BuddyBash adventures

Why JUMiNGO? We’re more than a tech company—we’re a launchpad for game-changers like you. Join us to scale your career, innovate without limits, and geek out with a team that’s as passionate as you are.

Is your inner coder itching to join? Hit “apply now” and upload your CV in just 3 minutes.

Let’s disrupt logistics, one commit at a time.

❗Please note, that we can only consider applications from within Germany for compliance reasons.

Your contact person:

Alina Fischer

Talent Acquisition Partner

jobs@jumingo.com

Data protection information

When sending my application, I hereby confirm that I have acknowledged the „Information about data protection and applicant data processing acc. to Art. 13, 14 and 21 of the General Data Protection Regulation (GDPR)“