{"id":2945534,"url":"https://alion.io/job/avenga-senior-python-engineer-3","title":"Senior Python Engineer","company":{"id":181252,"name":"Avenga","domain":"avenga.com","url":"https://alion.io/company/avenga","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","truth_index":{"grade":"B","score":76,"open_postings":27,"ghost_share":0,"stale_share":0.963,"repost_share":0,"time_to_fill_p50_days":41,"computed_at":"2026-10-29T05:49:05Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Sofia, Bulgaria"],"countries":["BG"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":45000,"max_usd":86000,"period":"year","method":"role_seniority_country_cell","sample_n":8},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Azure","optional":false},{"name":"CI/CD","optional":false},{"name":"Clean Architecture","optional":false},{"name":"Django","optional":false},{"name":"Docker","optional":false},{"name":"FastAPI","optional":false},{"name":"Flask","optional":false},{"name":"GCP","optional":false},{"name":"Git","optional":false},{"name":"MySQL","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Pytest","optional":false},{"name":"Python","optional":false},{"name":"Redis","optional":false},{"name":"SQLAlchemy","optional":false},{"name":"Agile","optional":true},{"name":"Apache Kafka","optional":true},{"name":"Celery","optional":true},{"name":"Datadog","optional":true},{"name":"Grafana","optional":true},{"name":"GraphQL","optional":true},{"name":"Kubernetes","optional":true},{"name":"NumPy","optional":true},{"name":"Pandas","optional":true},{"name":"Prometheus","optional":true},{"name":"RabbitMQ","optional":true},{"name":"Scrum","optional":true},{"name":"Terraform","optional":true},{"name":"WebSockets","optional":true}],"status":"live","first_seen_at":"2026-10-20T14:16:27Z","employer_posted_date":"2026-10-20","last_verified_at":"2026-10-29T13:08:27Z","board_verified":true,"closed_at":null,"days_open":8,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":8},"description":"Avenga is an international engineering firm helping businesses operate with AI at the core. With 6,000+ experts worldwide, we combine engineering expertise with AI-native thinking to turn ambitious ideas into real-world impact across industries, technologies, and markets. \nAt the core of the role\nIn Sofia, Bulgaria we are actively seeking a Senior Python Engineer to strengthen our team dedicated to a project in Information Technology auditing, consulting, and software development industry domain.\nThe work is hybrid, and the suitable candidate can work from the client's office in Sofia approximately 1-2 days per week or biweekly. \nCore skills you’ll bring\n5+ years of professional software development experience, with strong hands-on expertise in Python.\n\nAdvanced knowledge of Python, including object-oriented programming, asynchronous programming, and modern language features.\n\nStrong experience with Python frameworks such as FastAPI, Django, or Flask.\n\nProven experience designing, developing, and maintaining RESTful APIs and backend services.\n\nSolid understanding of software design principles, design patterns, and clean architecture.\n\nExperience with relational databases such as PostgreSQL or MySQL.\n\nFamiliarity with NoSQL databases and caching solutions such as MongoDB or Redis.\n\nExperience with ORMs such as SQLAlchemy or Django ORM.\n\nStrong understanding of microservices, distributed systems, and service-oriented architecture.\n\nExperience with Docker, CI/CD pipelines, and modern development workflows.\n\nFamiliarity with cloud platforms such as AWS, Azure, or Google Cloud.\n\nStrong knowledge of automated testing using tools such as Pytest or unittest.\n\nExperience with Git and collaborative software development practices.\n\nUnderstanding of application security, performance optimization, logging, and error handling.\n\nStrong analytical, debugging, and problem-solving skills.\n\nAbility to make independent technical decisions and take ownership of complex development tasks.\n\nGood English communication skills and experience collaborating with international teams.\n\nAbility to work from the client's office in Sofia approximately 2 days per week.\n\nNice-to-have\nExperience with Kubernetes and container orchestration.\n\nKnowledge of message brokers and asynchronous task processing tools such as RabbitMQ, Apache Kafka, or Celery.\n\nExperience with event-driven architectures and distributed systems.\n\nFamiliarity with serverless architectures and cloud-native development.\n\nExperience with GraphQL and/or WebSockets.\n\nKnowledge of infrastructure as code tools such as Terraform.\n\nExperience with monitoring and observability tools such as Prometheus, Grafana, or Datadog.\n\nFamiliarity with data processing tools such as Pandas or NumPy.\n\nExperience with high-load systems and performance-critical applications.\n\nKnowledge of Agile/Scrum development methodologies.\n\nThe impact you'll create\nDesign, develop, and maintain scalable backend applications and services using Python.\n\nBuild, maintain, and integrate RESTful APIs and microservices.\n\nDesign and implement robust, maintainable, and efficient software architectures.\n\nWrite clean, reusable, well-structured, and thoroughly tested code.\n\nCollaborate with cross-functional teams to define technical requirements and deliver new features.\n\nDesign and optimize database schemas, queries, and data access patterns.\n\nIdentify and resolve performance bottlenecks, technical issues, and scalability challenges.\n\nImplement appropriate security, authentication, and authorization mechanisms.\n\nDevelop and maintain automated unit, integration, and functional tests.\n\nParticipate in code reviews and promote engineering best practices.\n\nLead technical discussions and contribute to architectural decisions.\n\nSupport CI/CD processes, deployments, monitoring, and production troubleshooting.\n\nMentor junior and mid-level developers and encourage knowledge sharing within the team.\n\nTake ownership of technical solutions throughout the software development lifecycle.\n\n What supports your journey\nGuided by our values, we aim to provide you with the tools, autonomy, trust, and support you need to excel. Our benefits include private health insurance, well-being programs, flexible and hybrid work arrangements, laptops and equipment, training opportunities, social events, great offices, and more.\nPeople are at the core of Avenga. We provide equal opportunities regardless of race, ethnicity, gender identity, sexual orientation, disability, age, religion, or any other characteristic. 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