Senior Backend Engineer – Automation, Platform Implementation

Assembly Industries

Backend Engineer specializing in Java microservices and AI integration at Assembly Industries. Focused on platform implementation and customer-facing deployments while building a robust orchestration engine.

Posted 6/12/2026full-timeRemote • 🇦🇷 ArgentinaSeniorWebsite

Tech Stack

Tools & technologies

AssemblyETLJavaMicroservicesMongoDBNoSQLPython

About the role

Key responsibilities & impact

Build, extend, and optimize Java-based microservices responsible for task execution, state management, and orchestration logic.
Model and manage NoSQL document databases to track execution state, workflow metadata, and session/context persistence.
Define internal API contracts, adapters, and connectors that enable modular integration with external APIs and customer deployments.
Implement production-ready infrastructure for data ingestion, document chunking, embedding indexing, and retrieval (RAG) pipelines.
Architect backend services that support multi-step agentic flows, including context assembly, tool calls, and session memory.
Turn product requirements for semantic search and AI assistant features into resilient, production-grade backend code.
Deploy, configure, and customize the automation platform to meet specific customer use cases and business requirements.

Requirements

What you’ll need

4–6 years of software engineering experience building resilient production backend systems and working with distributed architectures.
Strong proficiency in Java, with deep experience developing scalable microservices, handling asynchronous jobs, retries, idempotency, and system failure modes.
Experience with NoSQL document databases (e.g., MongoDB, Firestore, Couchbase) for state and metadata tracking.
Working knowledge of Python for building integrations, tooling, and rapid prototyping.
Solid understanding of LLM application structures, including embedding systems, vector search, retrieval mechanics, context windows, and agent/tool execution.
Proven ability to interface with product teams, solution architects, and customer stakeholders to translate vague user requirements into working, deployed software.
A consistent habit of writing clear system designs and deployment guides so that the next team member never has to start from zero.

Benefits

Comp & perks

Remote position available for candidates in Argentina

ATS Keywords

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Hard Skills & Tools

JavamicroservicesNoSQLMongoDBFirestoreCouchbasePythonLLM application structuresembedding systemsvector search

Soft Skills

interfacing with product teamstranslating user requirementswriting system designswriting deployment guides