{"id":2119050,"url":"https://alion.io/job/xelix-senior-python-backend-software-developer","title":"Senior Python Backend Software Developer","company":{"id":12258,"name":"Xelix","domain":"xelix.com","url":"https://alion.io/company/xelix","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Teamtailor","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":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":90000,"max_usd":171000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":125},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Django","optional":false},{"name":"Django REST Framework","optional":false},{"name":"Docker","optional":false},{"name":"Flask","optional":false},{"name":"GitHub","optional":false},{"name":"Jenkins","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"Rest API","optional":false},{"name":"SQL","optional":false},{"name":"Terraform","optional":false}],"status":"live","first_seen_at":"2026-09-17T12:49:56Z","employer_posted_date":"2026-09-17","last_verified_at":"2026-10-18T07:58:36Z","board_verified":true,"closed_at":null,"days_open":30,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":30},"description":"About us\nAt Xelix, we work with some of the world’s largest companies to automate and strengthen their financial controls. Our AI solutions redefine how Accounts Payable teams operate - moving from manual processes to automated, intelligent workflows.\nXelix is a fast-paced scale-up - things move fast and expectations are high. We raised our Series B with Insight Partners in June 2025 and are expanding aggressively. We have a team of 150 talented people pulling together to achieve our goals. Everyone is trusted to take ownership, move fast and have a meaningful impact. We prioritise personal and professional growth, keep things fun, and love to celebrate a milestone together.\nIn this role you’ll grow, be challenged and help shape the future of Xelix. If you’re excited about building something special with us, we’d love to hear from you.\nAbout the role\nWe're seeking Senior Python Developers to join our back-end development team. \nThis is a varied and challenging programming role. Tasks could include writing code to manage incoming data, working with AI Engineers to analyse huge data sets, or writing Restful APIs in Django to support the React front end.\nOur ideal candidate takes pride in their work - producing clean, tested, beautiful code. Rather than give you a detailed set of requirements, we encourage engineers to take responsibility for solving the problem. There are many opportunities to innovate as you collaborate with stakeholders to design and implement new features.\nYou will be well supported to continue your professional development. This includes an annual conference allowance, a budget for books and a monthly session with your manager to identify and track your learning goals.\nAs Xelix continues to grow opportunities for you to develop your career becoming a Team Lead, Project Lead or Staff Engineer could be available to the right candidate. \n\nWhat you'll be doing\nImplementing robust and scalable solutions in Python.\n\nDeveloping, using and designing REST APIs to efficiently deliver application components.\n\nImplementing performance improvement strategies.\n\nEnsuring the quality of code by writing comprehensive tests and participating in code reviews.\n\nWhat you’ll bring\n4+ years of Python coding professional experience\n\nAbility to learn and apply new technology quickly\n\nAbility to effectively communicate complex technical concepts to team members and stakeholders.\n\nFamiliarity with coding in Django and the Django Rest Framework, or Flask Web frameworks\n\nDegree in Computer Science (or similar), at 2:1 or above\n\nAmazon Web Services\n\nSQL / PostgreSQL\n\nBuild pipeline and CI with GitHub, Jenkins, Docker, Terraform\n\nWhat we offer in return\nCompetitive salary of £70,000 - £95,000 depending on experience\n27 days of annual leave (including 3 days Christmas closing) which increases up to 3 days based on tenure, with the option to roll over, buy or sell up to 3 days\nHybrid working with one day a week from our dog-friendly Hoxton office\nOn-site gym and cycle to work scheme\nEmployee discount at over 100 retailers\nComprehensive private medical & dental cover with Vitality\nEnhanced parental leave pay\nLearning & development culture - £1,000 personal annual budget\nWe’re carbon-neutral and are working towards ambitious carbon reduction goals\nLots of team socials & activities\nAnnual team retreat\n\nWant to learn more?\nAbout us\n\nXelix blog\n\nXelix news\n\nXelix glassdoor\n\nWe believe that people from diverse backgrounds, with different identities and experiences make our company and product better. No matter your background, we'd love to hear from you! And if you have a disability, please let us know if there's any way we can make the interview process better for you - we're happy to accommodate!\nIf you're a recruiting agency - we have an existing list of agencies we work with and we are not currently planning on expanding the list. Neither the Talent team nor hiring managers or the Support team will respond to cold outreach.\nThis is a full-time position, with standard working hours from 9:00 AM to 6:00 PM, Monday through Friday.\nInterview Process\nWhile the exact process may vary slightly depending on the role, our typical interview stages are:\nIntroductory Call - A short Teams conversation with a Talent Partner to discuss your background and the opportunity.\n\nHiring Manager Interview - A 30-45 minute Teams meeting to explore your experience and fit for the team.\n\nTechnical Task or Presentation - A role-relevant exercise to demonstrate your skills and approach.\n\nFinal On-site Interview - An in-person meeting with our senior leadership team and co-founders at our office.\n\nWe strive to make the process clear, efficient, and respectful of your time.\nWe welcome the responsible use of AI for research and interview preparation, but ask that it isn't used to generate answers during live interviews. We also believe in being transparent - we use Metaview's AI note-taker during interviews so our interviewers can stay fully present. If you'd prefer us not to use it, just let your interviewer know. While you may need to answer eligibility questions as part of your application, we do not use AI to review or make decisions on applications - every application is reviewed fairly by a member of our Talent team.","description_format":"text","description_chars":5275,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Annual leave","Hybrid work","Parental leave","Professional development"],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Fraud Detection","Financial AI","Accounting & Tax Software"],"lifecycle":[{"event":"open","at":"2026-10-08T23:51:38Z"}],"visa":[],"liveness":{"score":61,"band":"ok","label":"Likely open","p_open":1,"p_active":0.814,"p_room":0.75,"age_days":29,"expected_fill_days":36,"reasons":["conf:1","velocity","win:late"],"computed_at":"2026-10-17T05:46:00Z"},"pay":null,"html_url":"https://alion.io/job/xelix-senior-python-backend-software-developer","json_url":"https://alion.io/job/xelix-senior-python-backend-software-developer.json","meta":{"generated_at":"2026-10-18T10:03:21Z","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":14927,"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":12258},"rest":"https://alion.io/mcp/rest/get_company?id=12258"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fxelix-senior-python-backend-software-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%2Fxelix-senior-python-backend-software-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%2Fxelix-senior-python-backend-software-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/xelix-senior-python-backend-software-developer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fxelix-senior-python-backend-software-developer"}]}