Software Engineer - Freelance

Bitrock; Puglia; In loco; EUR 60.000 - 90.000; Tempo pieno

Descrizione del lavoro

Bitrock è alla ricerca di un Software Engineer Freelance per prendere piena ownership dei servizi backend su AWS all’interno di un team ad alta autonomia. Sarà responsabile della analisi, assorbimento e riscrittura di componenti esistenti.

Progetterai API REST, microservizi e integrazioni DB, lavorando a stretto contatto con un fornitore estero e utilizzando Claude Code per accelerare sviluppo e testing. Si richiede indipendenza, capacità di reverse engineering e inglese B1/B2.

Competenze

• Seniorità medio-senior: punto di riferimento tecnico verso il vendor estero.
• Solida esperienza con Java e Spring / Spring Boot.
• Forte base in service-oriented architectures, REST APIs e gestione database.
• Capacità di lavorare su sistemi poco documentati o legacy (reverse engineering).
• Autonomia, pragmatismo e mindset da startup.
• Esperienza o forte interesse nell’AI-assisted development (Claude Code, AI agents).
• Inglese B1/B2.

Mansioni

• Analisi e takeover dei backend esistenti su AWS senza pieno accesso al codice sorgente.
• Riscrittura progressiva di componenti legacy e mancanti.
• Progettazione e implementazione di API REST, architettura a microservizi e integrazione database.
• Reverse engineering e ricostruzione del comportamento del sistema a partire da log e configurazioni.
• Coordinamento tecnico con il vendor estero durante la fase di handoff.
• Utilizzo attivo di strumenti AI per ottimizzare coding, debugging e testing.

Conoscenze

Java

Spring Boot

AWS

REST APIs

AI tools (Claude Code)

Strumenti

Java

Spring Boot

AWS

Claude Code

Descrizione del lavoro

Descrizione dell’offerta di lavoro

Who we are

Bitrock is a high-end consulting and system integration company, strongly committed to offering cutting-edge and innovative solutions. Our tailored consulting services enable our clients to preserve the value of legacy investments while migrating to more efficient systems and infrastructure. We take a holistic approach to technology: we consider each system in its totality, as a set of interconnected elements that work together to meet business needs.

We thrive on overcoming challenges to help our clients reach their goals, by supporting them in the following areas: Data, AI & ML Engineering; Back-end Engineering, Platform Engineering, Front-end Engineering, Product Design & UX Engineering, Mobile App Development, Quality Assurance, FinOps, GovernanceThe effectiveness our solutions also stems from partnerships with key technology vendors, like HashiCorp, Confluent, Lightbend, Databricks, and Meterian.

Who we are looking for

We're looking for a Software Engineer Freelance to take full ownership of backend services within a startup-style, high-autonomy team. You will be responsible for analyzing, taking over, and progressively rewriting components of an existing AWS platform today managed by an overseas vendor. The team will make intensive use of Claude Code (license covered by the client) and dedicated AI agents (PM, Analyst, Dev, Tester, DevOps) to amplify impact and speed up development.

What You'll Do

• Analysis and takeover of existing backend services on AWS without complete access to source code
• Progressive rewriting and development of missing or legacy backend components
• Design and implementation of RESTful APIs, microservices architecture, and database integrations
• Reverse engineering and reconstructing system behavior starting from logs, configurations, and real service interactions
• Technical liaison with the current overseas vendor during the handoff phase
• Active usage of AI-assisted tools (Claude Code, AI agents) to streamline coding, debugging, and testing workflows

Requirements

• Mid-to-senior seniority: you'll act as a primary technical reference point toward the overseas vendor
• Solid, hands-on experience with Java and Spring / Spring Boot ecosystem
• Strong foundation in service-oriented architectures, REST APIs, and database management
• Proven ability to work on poorly documented systems or legacy codebases (reverse engineering experience is a strong plus)
• Autonomy, pragmatism, ownership: a startup mindset, no need for close supervision
• Experience with, or strong interest in, AI-assisted development (Claude Code, AI agents)
• English B1/B2

Duration: 1 year (possible extension)

Start: ASAP

Recruitment process

• First discovery short interview with our HR team
• Technical interview with our Team Leaders
• Final interview with our Client