Mid-Level Software Engineer – Java (Backend) – 3 months engagement

About Plataine

Plataine is the pioneer of Industrial AI Agents for advanced manufacturing. Our cloud-based Total Production Optimization (TPO) platform combines real-time IIoT data with AI-driven digital assistants that help production teams make optimal decisions, every time. We partner with organizations such as SAP, Microsoft, Airbus (CTC), and Boeing (AMRC), serving manufacturers across three continents.

We are bringing on a Software Engineer for a focused three-month project to accelerate delivery of core backend features on our SaaS platform. You will ramp up quickly on our codebase, take ownership of a well-defined slice of work, and ship production-ready software alongside our Product, Frontend, and QA teams. There is potential for a longer engagement beyond the initial three months, subject to the continuation of the project with our customer.

This is a hands-on, delivery-focused engagement: we are looking for someone who can be productive fast, work independently, and communicate clearly across the team.

•     Design, build, and maintain backend services and APIs for our SaaS platform, from feature logic to the infrastructure that runs it.

•     Build and integrate REST APIs and event-driven services within a microservice architecture.

•     Model and optimize relational and NoSQL data stores, with a focus on performance, correctness, and scale.

•     Own features end to end - design, implementation, testing, deployment, and production support while collaborating with Product, Frontend and QA teams.

•     Use modern developer tooling, including AI coding assistants, to accelerate delivery while keeping code quality, security, and maintainability high.

•     2-6 years of overall programming experience.

•     2+ years of hands-on experience with Java / Spring for backend development.

•     2+ years working with relational databases (PostgreSQL, MySQL, or Oracle).

•     Experience building and integrating REST APIs and SaaS applications.

•     Solid grasp of microservice architecture and design concepts.

•     Experience with NoSQL data stores (e.g., MongoDB, Redis).

•     Hands-on experience with the AWS cloud stack (or a comparable cloud provider).

•     Experience with CI/CD pipelines and concepts (e.g. Bitbucket/Git, GitHub Actions, GitLab CI, or Jenkins).

•     Experience using AI coding tools (e.g., Claude Code, Cursor, or Codex) as part of day-to-day development - for code generation, refactoring, debugging, and test writing - with sound judgment about when and how to rely on them.

•     B.Sc. in Computer Science, Software Engineering, or a related field.

•     Excellent English skills - reading, writing, and speaking.

•     Strong communication skills, with the ability to convey technical concepts clearly to both technical and non-technical audiences.

•     A strong sense of ownership - able to drive a feature from design through development, testing, and production release.

•     Fast learner who can quickly ramp up on new business domains and technologies.

•     Experience working closely in cross-functional teams - with product owners, QA, and frontend engineers.

•     A team player who can also take full ownership and work independently.

•     Experience developing B2B SaaS systems.

•     Familiarity with modern frontend development using React (JavaScript/TypeScript) for building and integrating SaaS user interfaces.

•     Experience with messaging and streaming frameworks (Kafka, RabbitMQ, or ActiveMQ).

•     Experience integrating with, or building on top of, LLM APIs or AI-agent frameworks.

•     Understanding of High Availability (HA) architecture and configurations, and experience provisioning production environments.