Software Engineer - Java

About Manna

At Manna, we’re changing how the world receives things — by taking delivery to the skies.

Our mission is simple but ambitious: to make high-speed suburban delivery affordable, green, and safe. We design and build our own aviation-grade drones that deliver food, coffee, groceries, and more — directly from local stores and vendors to people’s doors in just a few minutes.

We’re a team that Drive with Impact, are Safety Focused, and knows that the best ideas come from Team Players who show up as their Authentic Selves. We move fast, we are passionate about what we do, and we’re always pushing a growth mindset to be better — in everything we do.

If you want to build world-changing technology with real-world impact (and have a bit of fun while doing it), you’ll love it here.

Welcome to Manna — where we deliver the future.

Role Purpose

As a Software Engineer on the Airspace team, you work on major subsystems within our airspace and control platform. You’ll design robust backend services and influence system architecture while working on problems where correctness and reliability matter deeply.

This role is ideal for an experienced engineer who enjoys complex systems, clear ownership, and seeing their work directly impact real-world operations.

Contribute to services for routing, deconfliction, airspace management, and ground control.

Own end-to-end delivery of complex features, from design through rollout and monitoring.

Work across Java, C++, and Python services, with Postgres as a core data store.

Build and evolve APIs and data models that support real-time decision-making.

Design systems with failure modes, observability, and recovery in mind.

Collaborate closely with Aircraft, QA, and Operations teams to ensure safe and effective system behaviour.

Contribute to technical standards and best practices across the Airspace domain.

Take ownership of technical decisions and unblock delivery when needed.

Strong professional experience building backend or systems software in production.

Minimum of 6 years Software Engineering experience

Proficiency in Java or C++ (experience with both is a plus); Python experience beneficial.

Experience designing and owning services in distributed or real-time systems.

Solid understanding of relational databases, especially Postgres.

Track record of owning features or subsystems end-to-end.

Strong debugging and problem-solving skills.

Experience with routing, optimisation, simulation, or autonomy-adjacent systems.

Background in safety-critical, robotics, aviation, or high-reliability domains.

Experience working with camera systems, telemetry, or geospatial data.

Familiarity with frontend tools such as React for operational UIs.

Exposure to incident response and reliability engineering practices.