Lead PLC Software Developer

At Voltify, we are building the next generation of rail - battery locomotives that fast charge autonomously and dynamically through a dedicated self sustained microgrid network.

We are bringing back the power to the industry and eliminating the dependency on fossil fuels. Lowering rail main expense - energy - by more than 20%.

This is over $3B yearly just in North America alone.

We are already working with some of the largest global rail companies with over $50M in contingent orders.

We are looking for a hands-on Lead PLC Software Developer to own the controller software that runs our microgrid control management — the layer that commands real energy assets in the field and keeps our locomotive charging infrastructure running.

In this role you will design, implement, and deploy control software across a wide range of PLC platforms — both traditional hardware PLCs and soft-PLCs — integrating diverse energy assets (solar, BESS, grid interconnects, chargers) into a unified, reliable control plane. Your software will directly command physical hardware, optimizing energy flows and enabling the next generation of rail transportation.

We're at a stage where the roadmap is still being written. Requirements shift as we learn from each deployment, so we need someone exceptional — a true generalist-specialist who can look at the entire system architecture and then dive into a single misbehaving register without losing the thread. Someone who treats "that's not my task" as a foreign concept.

This is also a role with a future. As we scale our U.S. operations, we expect this person to grow into building and leading the U.S. controls team. You'll set the technical bar that the people you eventually hire will be measured against.

We operate with extreme ownership and speed. If you want a 9-to-5 where you wait for tickets, this isn't it. If you want to build the future of rail energy, read on.

• →Design, develop, deploy, and maintain PLC software for microgrid control management across a variety of platforms — both hardware PLCs and soft-PLCs (PC-based / runtime controllers).
• →Implement control logic in CODESYS and in proprietary / vendor-specific environments — for example Siemens TIA Portal (SCL/STL), Rockwell Allen-Bradley Studio 5000 / RSLogix, Beckhoff TwinCAT, B&R Automation Studio, Schneider EcoStruxure / Unity, Mitsubishi GX Works, or Omron Sysmac.
• →Write robust, maintainable code using the IEC 61131-3 languages (Structured Text, Ladder, Function Block Diagram, Sequential Function Chart) as each platform and task demands.
• →Architect and implement control for complex microgrid systems — managing solar inverters, battery energy storage systems (BESS), grid-tie interconnections, and EV/locomotive chargers, including islanding/reconnection and protection coordination.
• →Integrate diverse industrial hardware using protocols such as Modbus TCP/RTU, OPC-UA, DNP3, and CANbus.
• →Implement and harden the bi-directional Cloud ↔ Edge communication pipeline (e.g. via MQTT), ensuring data integrity and gracefully handling connectivity edge cases.
• →Travel frequently to our deployment sites for on-site commissioning, integration testing, and troubleshooting — this is a meaningful part of the job, not an occasional add-on.
• →Set engineering standards, conduct code reviews, define MVPs, and make architectural decisions that balance speed with reliability — laying the groundwork to build and lead the U.S. controls team.

• Experience implementingmicrogrids or working with DERs, power flows, and energy management systems.
• Experience with AWS services (e.g. IoT Core, Lambda, DynamoDB) for cloud-connected control applications.
• Experience with JavaScript/TypeScript for dashboards or internal tooling.