{"id":746510,"url":"https://alion.io/job/ai2cyber-backend-developer","title":"Backend Developer","company":{"id":8338,"name":"Ai2Cyber","domain":"ai2cyber.com","url":"https://alion.io/company/ai2cyber","size_band":null,"is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Workable","truth_index":{"grade":"A","score":100,"open_postings":14,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-16T05:45:00Z"}},"role":"Backend","role_family":"Backend","seniority":null,"employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"posting_text","remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["Athens, Greece"],"countries":["GR"],"hiring_countries":["GR"],"hiring_countries_total":1,"salary":null,"salary_estimate":null,"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Celery","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"Flask","optional":false},{"name":"Git","optional":false},{"name":"Linux","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Redis","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"CI/CD","optional":true},{"name":"LLM","optional":true},{"name":"SQLAlchemy","optional":true}],"status":"live","first_seen_at":"2026-08-03T00:00:00Z","employer_posted_date":"2026-08-03","last_verified_at":"2026-10-16T14:28:13Z","board_verified":true,"closed_at":null,"days_open":74,"trust":{"level":"ok","repost_count":0,"flags":[],"days_open":74},"description":"We are seeking a highly motivated Backend Developer based in Greece, with strong experience in Python, API development, databases, data processing, and backend architecture, to join our engineering team.\nThe role focuses on building reliable backend services, scalable APIs, data ingestion mechanisms, processing workflows, automation features, and core platform logic for advanced enterprise software products.\nYou will work on systems that handle complex technical data, integrate with multiple sources, support operational workflows, and require strong attention to reliability, security, maintainability, and performance.\nResponsibilities\nDesign, develop, and maintain backend services using Python.\nBuild clean, stable, and well-documented REST APIs.\nDevelop data ingestion, normalization, enrichment, and processing workflows.\nWork with structured and unstructured technical datasets from internal and external sources.\nDesign and maintain database schemas, indexes, queries, and backend data models.\nImplement background workers, scheduled tasks, automation pipelines, and long-running processing jobs.\nWork with PostgreSQL, Redis, object storage, and other backend infrastructure components.\nImplement authentication, authorization, API access controls, rate limiting, and audit-friendly backend logic.\nBuild backend support for analytics, reporting, monitoring, workflow automation, and user-facing platform features.\nCollaborate closely with frontend developers to define API contracts and deliver reliable data to the user interface.\nImprove backend performance, error handling, logging, and observability.\nParticipate in code reviews, testing, debugging, deployment preparation, and technical documentation.\nHandle proprietary technical information with discretion and professional confidentiality.\nRequired Technical Skills\n5+ years of backend development experience.\nStrong experience with Python.\nExperience with Flask, FastAPI, or Django.\nGood understanding of REST API design.\nExperience with PostgreSQL.\nStrong SQL skills and understanding of database design.\nExperience with Docker and Linux environments.\nExperience with Git and collaborative development workflows.\nUnderstanding of authentication, JWT, RBAC, and API security principles.\nExperience with background jobs, workers, queues, schedulers, Redis, Celery, or similar technologies.\nAbility to write clean, modular, testable, and maintainable backend code.\nStrong debugging skills in development and production-like environments.\nAbility to understand complex business logic and translate it into reliable backend services.\nNice to Have\nExperience with SQLAlchemy or similar ORM frameworks.\nExperience with large-scale data processing, parsing, enrichment, or data quality workflows.\nExperience with asynchronous processing and event-driven backend design.\nExperience with search, indexing, graph, or analytics-oriented databases.\nExperience with cloud services, containerized deployments, and CI/CD pipelines.\nExperience with monitoring, logging, metrics, and observability tools.\nExperience building backend systems for enterprise platforms, technical analytics, monitoring, compliance, intelligence, or operational decision-support products.\nExperience with secure coding and secure-by-design backend architecture.\nFamiliarity with AI-assisted processing or LLM integrations is a plus.\nTechnology Stack\nPython, Flask/FastAPI, PostgreSQL, SQLAlchemy, Redis, Celery, Docker, Linux, Git, REST APIs, JWT, RBAC, background workers, schedulers, external API integrations.\nIdeal Candidate Profile\nThe ideal candidate is not just someone who writes endpoints. We are looking for a backend developer who understands data flows, system reliability, security requirements, performance constraints, and production-quality engineering.\nThis role is suitable for someone who can build the core engine of a serious software product and take ownership of backend components from design to implementation.\nConfidentiality Note\nThe selected candidate will work on proprietary backend systems and sensitive product logic. Detailed product information, data flows, and internal architecture will be shared only with shortlisted candidates and, where appropriate, under confidentiality terms.\nBenefits\nWork on advanced backend systems with real technical depth.\nOpportunity to build core platform components, not just minor features.\nExposure to data processing, automation, analytics, monitoring, and secure software engineering.\nA demanding but rewarding technical environment.\nSpace to take ownership and contribute to long-term product architecture.\nHighly competitive salary reviewed upwards on a regular basis.\nWorking from home: Hit your goals from the comfort of your home because we value performance, not the place.\nPersonal and professional development, amongst industry experts and talented people.\nAt AI2CYBER, we are a cybersecurity firm dedicated to providing cutting-edge solutions to protect businesses and individuals from evolving cyber threats. Our mission is to empower organisations to navigate the complex cybersecurity landscape with confidence. We believe that by combining robust security solutions, continuous improvement, and a proactive mindset, we can help our clients stay one step ahead of cyber attackers. We are committed to building a safer digital world and are passionate about making a positive impact in the industry.\nThis is a full-time position with competitive salary and benefits. If you have a passion for backend development and are looking for an exciting opportunity to work with cutting-edge technology, we would love to hear from you!\nNote: All applications will be treated with strict confidentiality.\nTo apply, please send us your CV at \nRequirements\nThis position in available only for Greek residents.","description_format":"text","description_chars":5834,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"master","optional":false},"security_clearance":false,"languages":[]},"benefits":["Professional development"],"hiring_locations":[{"name":"Greece","iso":"GR","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Security","Managed Security"],"lifecycle":[{"event":"open","at":"2026-09-11T14:21:38Z"}],"visa":[],"liveness":{"score":11,"band":"cold","label":"Long shot","p_open":1,"p_active":0.383,"p_room":0.28,"age_days":74,"expected_fill_days":27,"reasons":["conf:4","win:tail","crowd:"],"computed_at":"2026-10-16T05:45:00Z"},"pay":null,"html_url":"https://alion.io/job/ai2cyber-backend-developer","json_url":"https://alion.io/job/ai2cyber-backend-developer.json","meta":{"generated_at":"2026-10-16T17:22:34Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":2074,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-17T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":8338},"rest":"https://alion.io/mcp/rest/get_company?id=8338"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fai2cyber-backend-developer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Fai2cyber-backend-developer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Fai2cyber-backend-developer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/ai2cyber-backend-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fai2cyber-backend-developer"}]}