{"id":17818,"url":"https://alion.io/job/surfshark-senior-backend-software-engineerpython","title":"Senior Backend Software Engineer (Python)","company":{"id":5244,"name":"Surfshark","domain":"surfshark.com","url":"https://alion.io/company/surfshark","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","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":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Vilnius, Lithuania"],"countries":["LT"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":50000,"max_usd":106000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":62},"experience_years_min":null,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"AWS","optional":false},{"name":"Docker","optional":false},{"name":"GCP","optional":false},{"name":"Kubernetes","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"OWASP","optional":true},{"name":"Rust","optional":true}],"status":"live","first_seen_at":"2026-07-22T13:17:25Z","employer_posted_date":"2026-07-22","last_verified_at":"2026-10-18T11:25:11Z","board_verified":true,"closed_at":null,"days_open":88,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":88},"description":"Are you passionate about cybersecurity and ready to join a fast-growing company? Look no further-Surfshark is the place for you!\nAt Surfshark, you'll work with a suite of cybersecurity products, reaching a global audience. Whether you're developing new features, researching the latest threats, filming videos, or making cybersecurity topics interesting for all, you'll be a crucial part of our mission to humanize digital security and make it accessible to everyone.\nReady to make a difference in the cybersecurity world? Apply now to join the Surfshark team!\nIf you want to:\nDesign, architect, and implement high-performance backend systems to detect and prevent web service abuse, automated bot traffic, and malicious activity across Surfshark services.\n\nBuild, deploy, and maintain robust Layer 7 rule engines, rate-limiting systems, and edge-layer defenses (WAF/CDN) to mitigate large-scale application attacks.\n\nDrive architectural decisions for backend services and data pipelines that integrate real-time web telemetry for automated threat mitigation.\n\nCollaborate with cross-functional security and platform teams to model emerging application threat vectors and engineer scalable defenses.\n\nEnsure the long-term reliability, low latency, security, and cost efficiency of the backend infrastructure supporting anti-abuse efforts.\n\nAnd you can check off:\nExperience in Python, including building and optimizing scalable microservices and data processing frameworks;\n\nProven capability to take end-to-end ownership of complex systems, driving features from initial concept and design diagrams through to deployment and maintenance;\n\nHands-on experience with cloud platforms (AWS/GCP), containerization (Docker/Kubernetes), and web protocols (HTTP/HTTPS, REST) for troubleshooting application-level security issues;\n\nExperience designing data collection pipelines and working efficiently with large database systems and data processing tools;\n\nA strong commitment to engineering excellence: writing clean, well-tested code, managing technical debt, and mentoring others through rigorous code reviews;\n\nAn analytical, threat-hunting mindset with the ability to research evolving attack vectors and proactively propose systemic improvements.\n\nBonus points if you:\nHave knowledge about OWASP Web/API risks, bot prevention techniques, credential stuffing countermeasures;\n\nHave experience with other backend languages used in our stack (e.g., Rust) and the architectural wisdom to know when to use them.\n\nHere's the deal:\nGrowth and learning opportunities: time dedicated to learning, conferences, online learning platforms, and books for your professional development;\n\nHealth and wellness: we want you to feel and be your best. That's why we offer various benefits, from online workouts and a physical coach to health insurance and regular mental health checks;\n\nTools of your choice: choose the technical equipment and tools you need to do your best work;\n\nCommunity and celebrations: get ready for long-lasting traditions such as yearly workation, Friday get-togethers, various team buildings and company celebrations;\n\nWork-life balance: as a general rule, we work based on a 3+2 hybrid model. And let’s not forget the WFA policy - an opportunity to work from anywhere in the world;\n\nMore days off: additional vacation days depending on your tenure;\n\nPremium Surfshark accounts: for you, your family, and friends;\n\nGross salary: 4400-7000 Eur/month. Although it may vary depending on your skills and experience.","description_format":"text","description_chars":3518,"description_truncated":false,"requirements":{"experience_years_min":null,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":null,"security_clearance":false,"languages":[]},"benefits":["Health insurance","Professional development"],"hiring_locations":[{"name":"Lithuania","iso":"LT","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Information Security","VPN & Proxy Services","Internet Security Services"],"lifecycle":[{"event":"open","at":"2026-07-22T13:17:25Z"}],"visa":[],"liveness":{"score":19,"band":"cold","label":"Long shot","p_open":1,"p_active":0.675,"p_room":0.28,"age_days":86,"expected_fill_days":42,"reasons":["conf:3","velocity","win:tail","crowd:"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/surfshark-senior-backend-software-engineerpython","json_url":"https://alion.io/job/surfshark-senior-backend-software-engineerpython.json","meta":{"generated_at":"2026-10-18T13:54:12Z","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":20615,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-19T00:00:00Z"}},"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":5244},"rest":"https://alion.io/mcp/rest/get_company?id=5244"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsurfshark-senior-backend-software-engineerpython"},{"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%2Fsurfshark-senior-backend-software-engineerpython"},{"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%2Fsurfshark-senior-backend-software-engineerpython"},{"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/surfshark-senior-backend-software-engineerpython\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsurfshark-senior-backend-software-engineerpython"}]}