Senior Python Backend Engineer (PostgreSQL & Knowledge Graphs) at Techstack

Hoorya; Wrocław; Hybrid; PLN 190,000 - 290,000; Full time

Benefits offered by this job

Long-term role

Career growth

Remote work opportunity

Course subsidies

English courses

Paid time off 20 days

Sick leave 7 days

Legal support

Gifts on occasions

Job summary

Hoorya is building a Governance, Risk, and Compliance platform that connects risks, controls, assessments and evidence using knowledge graphs. You will collaborate with the client’s engineering team on backend architecture, data modeling, and enterprise integrations.

The role focuses on Python backend development with PostgreSQL, knowledge graphs design, data pipelines, and robust API delivery to support risk scoring and compliance workflows.

Qualifications

• 5+ years of commercial experience in Python backend development.
• Strong hands-on PostgreSQL experience including schema design, indexing, JSONB, and migrations.
• Practical experience designing or implementing knowledge graphs and ontologies.
• Experience with graph technologies such as Neo4j, Apache AGE, Cypher/openCypher.
• Strong understanding of REST APIs, backend architecture, and enterprise integrations.
• Experience with data validation, synchronization, and workflow logic or state machines.
• Good English communication skills.

Responsibilities

• Develop and maintain backend services using Python and PostgreSQL.
• Design and implement knowledge graphs, ontologies, and graph data models.
• Build data pipelines and synchronization for compliance data and graph representations.
• Develop integrations with enterprise systems (CMDB and security platforms).
• Implement APIs, workflow logic, and auditable risk-scoring capabilities.
• Maintain data consistency, validation, security, and CI/CD reliability.
• Collaborate with stakeholders to translate complex requirements into backend solutions.

Skills

Python backend

PostgreSQL

Knowledge graphs

Ontologies

REST APIs

Data validation

CI/CD

English communication

Tools

Neo4j

Apache AGE

Cypher/openCypher

Job description

We’re building a Governance, Risk, and Compliance (GRC) platform that helps organizations manage security risks across business processes, systems, vendors, and data flows. The platform uses knowledge graphs to connect risks, security controls, assessments, and supporting evidence. You’ll collaborate closely with the client’s engineering team on backend architecture, data modeling, knowledge graphs, and enterprise integrations.

Обов’язки

• Develop and maintain backend services using Python and PostgreSQL.
• Design and implement knowledge graphs, ontologies, graph data models, and queries using Neo4j, Apache AGE, or comparable technologies.
• Build data pipelines and synchronization mechanisms for structured compliance data and graph representations.
• Develop integrations with enterprise systems, including CMDB and security assessment platforms.
• Implement APIs, workflow logic, and auditable risk-scoring capabilities.
• Maintain data consistency, validation, security, automated testing, and CI/CD reliability.
• Collaborate with technical stakeholders to translate complex requirements into maintainable backend solutions.

Вимоги

• 5+ years of commercial experience in Python backend development.
• Strong hands‑on experience with PostgreSQL, including schema design, indexing, JSONB, and database migrations.
• Practical experience designing or implementing knowledge graphs and ontologies.
• Experience with Neo4j, Apache AGE, Cypher/openCypher, or comparable graph technologies.
• Strong understanding of REST APIs, backend architecture, and enterprise system integrations.
• Experience with data validation, synchronization, and workflow logic or state machines.
• Ability to work independently, investigate complex technical problems, and make sound engineering decisions.
• Good English communication skills.

Що пропонуємо

• Stable and long‑term position in an experienced team.
• Broad opportunities for professional and career growth, including professional challenges that encourage personal development, meetups, hackathons, professional communities, and more.
• Horizontal connections and the absence of micromanagement foster a collaborative environment in which all team members are accessible to one another for any concerns.
• Hubs in Kharkiv, Kyiv, Lviv, and Wrocław (Poland), or everything necessary for remote work.
• Up to 50% compensation for the cost of educational courses and conferences to support professional development.
• Free English language and business English courses.
• 20 days off and 7 sick days to support your health and well‑being.
• Legal and accounting support.
• Appreciation gifts for significant events and occasions.