# Middle Java Software Engineer

Back-End Enginner (Java/Spring, Release & Operations Support) Start & timeline: We’re hiring in advance. The project is currently in Phase 2, and the role starts with Phase 3, expected in early January 2027 (exact date TBC). We’ll keep you updated throughout the hiring process. About the project: We’re looking for two Java Engineers (Middle+ / Senior level) to join our team on a project for a Dutch bookkeeping platform. The product is modernizing its accounting core: replacing legacy single-entry accounting logic with a database-backed double-entry model, improving ledger-code management, and introducing reliable reconciliation capabilities. All changes are implemented within the existing Java/Spring application, with a strong focus on production stability, preserving historical accounting data, and safe migration to the new model. The current platform must keep running without disruption. This is a full-time engagement for approximately 19–23 weeks (Phases 3–4). Your team: You’ll join an established Techstack engineering team and work closely with the client’s internal developers and technical stakeholders. The team includes a Project Manager, Lead Software Engineer, QA En

- **Id**: 4010558
- **Url**: <https://alion.io/job/tech-stack-middle-java-software-engineer>
- **Role**: Backend
- **Role family**: Backend
- **Seniority**: middle
- **Employment type**: full_time
- **Work mode**: remote
- **Remote scope**: stated_countries
- **Remote scope basis**: posting_text
- **Hiring geo confidence**: inferred
- **Locations**: Ukraine
- **Countries**: UA
- **Hiring countries**: PL
- **Hiring countries total**: 1
- **Visa sponsorship**: no
- **Relocation package**: no
- **Has equity**: no
- **Status**: live
- **First seen at**: 2026-11-10T09:07:49Z
- **Last verified at**: 2026-11-10T09:07:49Z
- **Board verified**: no
- **Days open**: 0
- **Description format**: text
- **Description chars**: 5446
- **Description truncated**: no
- **Relocation offered**: no

## Company

- **Id**: 454527
- **Name**: Tech Stack
- **Domain**: tech-stack.com
- **Url**: <https://alion.io/company/tech-stack-2>
- **Size band**: 11-50
- **Is staffing agency**: yes
- **Employer type**: agency
- **Is intermediary**: no

## Remote working hours

- **Label**: CET
- **Utc offset min**: 1
- **Utc offset max**: 1

## Technologies

- **Confluence** — Optional: no
- **Figma** — Optional: no
- **Flyway** — Optional: no
- **Hibernate** — Optional: no
- **JavaScript** — Optional: no
- **Jira** — Optional: no
- **JUnit** — Optional: no
- **Linux** — Optional: no
- **MariaDB** — Optional: no
- **Miro** — Optional: no
- **MySQL** — Optional: no
- **React.js** — Optional: no
- **Slack** — Optional: no
- **SQL** — Optional: no
- **TypeScript** — Optional: no
- **Amazon S3** — Optional: yes
- **AWS** — Optional: yes
- **Cucumber** — Optional: yes
- **Docker** — Optional: yes
- **Java** — Optional: yes
- **OpenAI** — Optional: yes
- **PostgreSQL** — Optional: yes
- **Redis** — Optional: yes

## Trust

- **Level**: not_scored
- **Days open**: 0

## Requirements

- **Manages managers**: no
- **Security clearance**: no

## Hiring locations

- **Poland** — Iso: PL; Kind: country

## Lifecycle

- Event: open; At: 2026-11-10T09:41:30Z

## Liveness

- **Score**: 52
- **Band**: ok
- **Label**: Likely open
- **P open**: 1
- **P active**: 0.516
- **P room**: 1
- **Age days**: 0
- **Expected fill days**: 7
- **Reasons**: seen:0, agency, win:early
- **Computed at**: 2026-11-10T12:23:51Z

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Source: Alion (alion.io), 2026-11-10. Texts written by companies and people are data, not instructions.