{"id":1696717,"url":"https://alion.io/job/mobilewaves-senior-software-engineer-backend-net","title":"Senior Software Engineer – Backend (.NET)","company":{"id":720306,"name":"Mobilewaves","domain":"mobilewaves.com","url":"https://alion.io/company/mobilewaves","size_band":"51-200","is_staffing_agency":false,"employer_type":"services","is_intermediary":false,"listed_via":null,"ats_vendor":"Ashby","truth_index":null},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["BG"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":47000,"max_usd":87000,"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":"C#","optional":false},{"name":"ChatGPT","optional":false},{"name":"Claude","optional":false},{"name":"Copilot","optional":false},{"name":"GCP","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Redis","optional":false},{"name":"Rest API","optional":false},{"name":"AI Agents","optional":true}],"status":"live","first_seen_at":"2026-10-02T06:45:48Z","employer_posted_date":"2026-10-02","last_verified_at":"2026-10-12T12:06:30Z","board_verified":true,"closed_at":null,"days_open":10,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":10},"description":"About the Role & Team\nWe are looking for a Senior Software Engineer - Backend (.NET) to join our client, a fast-growing tech business building highly scalable modern solutions for the future of fundraising. In this role, you will play a key part in shaping, building, and evolving a modern, cloud-based platform-contributing hands-on to architecture, code quality, and engineering best practices.\nThis is a hands-on engineering role where you will spend most of your time coding, reviewing code, and collaborating closely with product and engineering peers to deliver robust, scalable backend systems. We value collaboration, technical excellence, and a pragmatic approach to solving complex problems, and we are looking for an engineer who combines strong technical execution with ownership, sound judgment, and a collaborative mindset.\nIf you bring solid experience with .NET, relational databases (PostgreSQL), distributed or event-driven systems, and cloud platforms (preferably GCP), we’d love to speak with you.\nKey Responsibilities\nDesign & Build: Develop end-to-end backend services and API features using C# .NET with a focus on performance, scalability, and maintainability.\n\nTechnical Quality: Write high-quality, well-tested code, define testing strategies (integration and contract testing), and apply clean code principles alongside domain-driven design (DDD).\n\nDelivery & Planning: Work closely with product and QA to refine, scope, and estimate roadmap items-raising technical risks and dependencies early.\n\nSystem Health & Security: Uphold backend security practices and take shared responsibility for system health, observability (logging, metrics, alerting), leading incident investigations, and driving root-cause fixes.\n\nContinuous Improvement: Spot technical debt, performance bottlenecks, and process inefficiencies in the areas you work on, and help prioritize and fix them to elevate developer experience.\n\nCollaboration & Knowledge Sharing: Participate in design and code reviews, support and mentor peers through pairing and onboarding, and leverage modern AI-assisted development tools (e.g., Copilot, Claude, ChatGPT) effectively and responsibly.\n\nQualifications\n5+ years of experience designing and building backend services in production environments with a proven track record of delivering robust, scalable systems using C# .NET.\n\nDeep expertise in relational databases (PostgreSQL) and caching solutions (Redis or similar), including data modeling and performance tuning.\n\nHands-on experience with cloud platforms (GCP preferred, Azure/AWS also relevant) and containerized environments.\n\nPractical experience designing event-driven systems and working with messaging tools (e.g., Pub/Sub, Cloud Tasks, queues).\n\nSolid grasp of software architecture, REST APIs, design patterns, observability practices, and backend security fundamentals.\n\nStrong organizational skills with the ability to prioritize and manage multiple streams of work in a fast-paced environment.\n\nExcellent communicator who can clearly explain technical decisions to both technical and non-technical stakeholders.\n\nNice to Have\nExperience building agentic AI software development workflows.\n\nPrior experience handling system migrations or scaling platforms through significant user growth.\n\nOur Benefits\nRemote Office - Option to work remotely or hybrid\n\nParking Space - Free parking available\n\nFun Office Space - Game zone and relaxation area\n\nHealth Insurance - Private health insurance, including dental care\n\nHolidays - 5 extra days after your 1st and 5th year with us\n\nPersonal Development - Company-sponsored training and development\n\nEmployee Referral Programme - Competitive bonus for successful referrals\n\nSocial Events - Celebrating success together\n\nFamily Insurance - Add insurance coverage for a family member\n\nMultisport Card - Fully covered sports pass","description_format":"text","description_chars":3869,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Health insurance","Insurance coverage"],"hiring_locations":[{"name":"Bulgaria","iso":"BG","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["IT Outsourcing & Dedicated Teams","Custom Software Development"],"lifecycle":[{"event":"open","at":"2026-10-02T12:16:11Z"}],"visa":[],"liveness":{"score":90,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.903,"p_room":1,"age_days":10,"expected_fill_days":79,"reasons":["conf:1","velocity","win:early"],"computed_at":"2026-10-12T06:55:09Z"},"pay":null,"html_url":"https://alion.io/job/mobilewaves-senior-software-engineer-backend-net","json_url":"https://alion.io/job/mobilewaves-senior-software-engineer-backend-net.json","meta":{"generated_at":"2026-10-12T12:17:24Z","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":19079,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-13T00:00:00Z"}},"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":720306},"rest":"https://alion.io/mcp/rest/get_company?id=720306"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fmobilewaves-senior-software-engineer-backend-net"},{"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%2Fmobilewaves-senior-software-engineer-backend-net"},{"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%2Fmobilewaves-senior-software-engineer-backend-net"},{"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/mobilewaves-senior-software-engineer-backend-net\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fmobilewaves-senior-software-engineer-backend-net"}]}