{"id":3204518,"url":"https://alion.io/job/signify-technology-senior-python-engineer-hybrid-in-london","title":"Senior Python Engineer (Hybrid in London)","company":{"id":2031272,"name":"Signify Technology","domain":"signifytechnology.com","url":"https://alion.io/company/signifytechnology","size_band":"1001-5000","is_staffing_agency":true,"employer_type":"agency","is_intermediary":false,"listed_via":null,"ats_vendor":"Schema","truth_index":{"grade":"B","score":75,"open_postings":78,"ghost_share":0.5,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":18,"computed_at":"2026-10-26T05:57:25Z"}},"role":"Backend","role_family":"Backend","seniority":"senior","employment_type":null,"work_mode":"hybrid","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"explicit","locations":["London, United Kingdom"],"countries":["GB"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":87000,"max_usd":169000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":139},"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"Apache Kafka","optional":false},{"name":"Git","optional":false},{"name":"Linux","optional":false},{"name":"MySQL","optional":false},{"name":"Oracle","optional":false},{"name":"PostgreSQL","optional":false},{"name":"Python","optional":false},{"name":"SQL","optional":false},{"name":"Unix","optional":false},{"name":"Agile","optional":true},{"name":"CI/CD","optional":true},{"name":"Rest API","optional":true}],"status":"live","first_seen_at":"2026-10-24T08:15:41Z","employer_posted_date":"2026-10-24","last_verified_at":"2026-10-27T00:16:31Z","board_verified":true,"closed_at":null,"days_open":2,"trust":{"level":"ok","repost_count":0,"flags":["company_stale"],"days_open":1},"description":"Job Title: Senior Python Developer\nLocation: London, UK\nWorking Model: Hybrid\nExperience: 5+ Years\nJob Overview\nMy client are looking for an experienced Python & SQL Developer with strong hands-on experience in developing, maintaining, and optimising applications and data-processing solutions. The ideal candidate will have excellent Python programming skills, advanced SQL expertise, and practical experience working in Linux environments and with Apache Kafka.\nStrong SQL skills are essential for this role, particularly the ability to write complex queries, optimise query performance, and work with large datasets. The successful candidate will collaborate with cross-functional teams to develop reliable, scalable, and high-performance solutions.\nKey Responsibilities\nDesign, develop, test, and maintain applications and backend solutions using Python.\nWrite, analyse, and optimise complex SQL queries involving multiple joins, subqueries, CTEs, window functions, and aggregations.\nPerform SQL query tuning and troubleshoot database performance issues.\nWork with relational databases to retrieve, transform, validate, and process large volumes of data.\nDevelop and maintain scripts, automation tasks, and batch-processing jobs in Linux environments.\nWork with Apache Kafka for event-driven processing, data streaming, and message-based integrations.\nMonitor application performance, investigate production issues, and provide effective resolutions.\nCollaborate with developers, data engineers, business analysts, and other stakeholders.\nFollow coding standards, version control practices, testing procedures, and deployment processes.\nSupport production releases, troubleshoot technical issues, and contribute to continuous improvement.\nRequired Skills and Experience\n5+ years of hands-on experience in software development, data engineering, or a related technical role.\nPython: Strong programming skills, including scripting, automation, debugging, and application development.\nSQL - Mandatory: Excellent ability to write complex SQL queries, including multi-table joins, nested queries, CTEs, window functions, aggregations, and query optimisation.\nLinux/Unix: Good experience working with Linux commands, shell scripting, process management, log analysis, and troubleshooting.\nApache Kafka: Practical experience with Kafka topics, producers, consumers, message processing, and event-driven architectures.\nExperience working with relational databases such as PostgreSQL, Oracle, SQL Server, or MySQL.\nStrong analytical, problem-solving, and debugging skills.\nExperience working with Git or other version control systems.\nGood communication skills and the ability to work effectively within a team.\nPreferred Skills\nExperience with high-volume data processing and distributed systems.\nFamiliarity with Kafka consumer groups, offsets, partitions, and message delivery semantics.\nExperience with performance tuning, production support, and root-cause analysis.\nKnowledge of REST APIs, automated testing, and CI/CD pipelines.\nExperience working in Agile development environments.\nMust be already based in London or surrounding areas","description_format":"text","description_chars":3137,"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":[],"hiring_locations":[{"name":"United Kingdom","iso":"GB","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":[],"lifecycle":[{"event":"open","at":"2026-10-24T11:49:05Z"}],"visa":[],"liveness":{"score":38,"band":"fade","label":"Fading","p_open":1,"p_active":0.379,"p_room":1,"age_days":1,"expected_fill_days":18,"reasons":["conf:5","agency","stale_co","velocity","win:early"],"computed_at":"2026-10-26T05:57:25Z"},"pay":null,"html_url":"https://alion.io/job/signify-technology-senior-python-engineer-hybrid-in-london","json_url":"https://alion.io/job/signify-technology-senior-python-engineer-hybrid-in-london.json","meta":{"generated_at":"2026-10-27T04:40:13Z","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":4230,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-28T00:00:00Z"}},"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":2031272},"rest":"https://alion.io/mcp/rest/get_company?id=2031272"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fsignify-technology-senior-python-engineer-hybrid-in-london"},{"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%2Fsignify-technology-senior-python-engineer-hybrid-in-london"},{"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%2Fsignify-technology-senior-python-engineer-hybrid-in-london"},{"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/signify-technology-senior-python-engineer-hybrid-in-london\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fsignify-technology-senior-python-engineer-hybrid-in-london"}]}