Full-Time
Lead Python Application Developer
Posted on 9/8/2026
Citi
10,001+ employees
Global financial services including banking, investment
No salary listed
Pune, Maharashtra, India
Hybrid
Hybrid work arrangement in Pune.
 Software Engineering (1) |
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- 12+ years of hands-on application development experience focused primarily on Python, data structures, and algorithms.
- Expert-level Python 3.x proficiency, including core concepts, advanced computation libraries, object-oriented programming, SOLID principles, and design patterns.
- Advanced knowledge of FastAPI, Django, and Flask.
- Strong understanding of software architecture principles and distributed system design, including microservices, event-driven architecture, and caching strategies.
- Extensive experience with relational databases including PostgreSQL, Oracle, and SQL Server, and NoSQL databases including MongoDB, Cassandra, and Redis, including advanced SQL query writing and optimization.
- Experience with Unix/Linux-based operating systems, shell scripting, and system-level development.
- Strong background in AWS or IBM Symphony Grid.
- Hands-on experience with Docker containerization and Kubernetes orchestration.
- Experience with continuous integration and continuous delivery systems including Jenkins, GitLab CI, GitHub Actions, and Bitbucket Pipelines for automated deployment.
- Proficiency with automated testing frameworks including Pytest and unittest, and Test-Driven Development methodologies.
- Understanding of secure coding practices and the OWASP Top 10.
- Expertise with Git, Bitbucket, and GitHub for branching, merging, and pull request workflows.
- Multiple years of experience developing quantitative, calculation-intensive Python solutions using advanced computation libraries such as NumPy, Pandas, and SciPy.
- Understanding of risk methodologies including market risk, stress testing, Value at Risk, and sensitivities.
- A proven track record delivering stress testing and regulatory risk projects in the market risk domain.
- Exposure to mathematical modeling and financial insights.
- Exposure to artificial intelligence and machine learning tools and frameworks.
- Practical experience using GitHub Copilot, Devin, Claude, Gemini, and GPT to optimize development workflows.
- Experience with agentic artificial intelligence tools, including writing agents and skills and contributing to agentic frameworks.
- Understanding and practical application of generative artificial intelligence concepts in software development.
- Deep understanding of and practical experience with Agile and Scrum methodologies.
- Ability to take complete ownership of project areas, adapt to changing priorities, and perform under pressure.
- Clear, concise, and impactful written and verbal communication for technical discussions and senior executive presentations.
- Lead the hands-on implementation and architecture of robust Python frameworks for horizontally scalable, highly available, highly resilient, and performant applications.
- Design and develop efficient software platforms for high-throughput data computation, processing, and quantitative calculations.
- Develop solutions that adhere to enterprise architectural standards and apply technical and business domain knowledge.
- Design, develop, and secure high-performance RESTful APIs, integration patterns, and relational and NoSQL database schemas.
- Enforce industry-standard software development lifecycle practices and contribute to code quality through code reviews, automated testing, and continuous integration.
- Own technical initiatives, including planning, forecasting, project tracking, governance, and management of team-level technology budgets.
- Drive continuous improvement, change management, and modern software engineering practices within the development team.
- Work independently, manage multiple priorities, and deliver under pressure to meet tight deadlines and respond to changing requirements.
- Partner with Risk Managers, Risk Analytics, Senior Quants, Front Office, DevOps, and Production Support teams to ensure seamless information technology deliveries.
- Collaborate in a globally matrixed environment with virtual teams and external partners across different time zones.
- Present technical information to development teams and senior business executives.
- Prior experience in banking or financial services, particularly with pricing, valuation, or risk management systems.
- Relevant cloud certifications, including AWS, Azure, or Google Cloud Platform certifications.
- Chartered Financial Analyst certification.
- Financial Risk Manager certification.
Citi provides financial services including consumer banking, credit, investment banking, and wealth management to individuals, corporations, and governments. The company operates by earning interest on loans and collecting fees for managing investments, processing trades, and facilitating cross-border transactions through its digital platforms. Unlike many local banks, Citi maintains a physical and digital presence in over 160 countries, allowing it to serve as a single partner for clients with global financial needs. Its goal is to drive growth and profitability for its clients and shareholders while supporting environmental and social sustainability initiatives.
Company Size
10,001+
Company Stage
IPO
Headquarters
New York City, New York
Founded
1812
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Simplify's Take
What believers are saying
- Q2 2026 revenue rose 14% to $24.8 billion, showing broad business momentum.
- Assets under custody and administration reached $35 trillion, up 22% year over year.
- Citi won $250 million from FundPark, expanding trade-finance and SME financing capacity.
What critics are saying
- Britain fined Citi £4.7 million on September 2, 2026 for Russia sanctions failures.
- Citi cut about 1,000 jobs in January 2026 and plans more March layoffs.
- China brokerage approval in September 2026 still leaves Citi exposed to CSRC rejection and delays.
What makes Citi unique
- Citi's Services franchise hit $6.4 billion in Q2 2026, led by TTS and Securities Services.
- Citi processed live tokenized-dollar transfers with DBS and SWIFT in minutes.
- Citi is launching Custody+ and Japan blockchain payments, extending global transaction-banking reach.
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Benefits
Health Insurance
Dental Insurance
Vision Insurance
Life Insurance
Disability Insurance
401(k) Retirement Plan
401(k) Company Match
Wellness Program
Paid Vacation
Paid Sick Leave
Paid Holidays
Company News
Citigroup will launch instant cross-border payment services for Japanese companies using blockchain-based tokenized deposits as early as this year. The US bank claims this will be the first such service offered to Japanese clients by a foreign financial institution. The blockchain-based system will enable companies to make foreign-currency transfers instantly, including during nights and holidays when traditional banking systems are unavailable. The service represents an expansion of Citi's blockchain payment capabilities into the Japanese market, offering businesses greater flexibility in managing international transactions outside standard banking hours.
NEOM has secured approximately $3 billion in export credit agency financing from Italy's SACE under a long-term multicurrency untied facility. The deal, NEOM's first corporate ECA financing and the largest untied financing ever guaranteed by SACE, is backed by nine international banks including HSBC, Bank of America, and J.P. Morgan. The financing will support various projects across NEOM, particularly in infrastructure, urban development, construction, and transport. It will enable NEOM to leverage supplies from Italian businesses, especially SMEs. Italian suppliers and contractors have already supported NEOM projects with contracts worth $6.3 billion. The partnership aims to generate capital investment aligned with Saudi Vision 2030 and diversify the Kingdom's economy through foreign investment.
DBS and Citi completed a live cross-border US dollar payment on a Saturday in minutes using tokenized deposits through SWIFT's blockchain-based Digital Ledger. The transaction between DBS in Singapore and Citi's New York office took place on 5 September, whilst conventional transfers can take up to two business days. SWIFT declared its blockchain ledger ready for initial use in July, with 17 banks across six continents preparing live pilots. Participants include Citi, DBS, HSBC, Standard Chartered, UBS, BNY, Wells Fargo, BNP Paribas, and MUFG. Banks issue tokenised representations of deposits on their own ledgers, whilst SWIFT's shared ledger coordinates payment commitments. Final settlement occurs through existing infrastructure. Citi has already processed live transactions with First Abu Dhabi Bank and OCBC.
Citigroup is expected to receive Chinese regulatory approval for its fully owned mainland brokerage as early as this month, Reuters reported. The US bank applied for the licence in late 2021 as part of efforts to deepen its China operations. The bank plans to expand the unit's workforce to around 100 employees by year-end, roughly double current levels, according to sources. Recruitment will cover senior revenue-generating roles and operational positions through relocations and external hiring. The brokerage will seek permission for A-share trading, underwriting, research and principal trading. It aims to leverage Citi's existing mainland corporate relationships for equity and M&A work, focusing on technology, healthcare, consumer and financial sectors. Citi declined to comment on the application.
Anthropic, the developer behind Claude AI chatbot, has secured a $15 billion credit facility ahead of its initial public offering. Major financial institutions including Morgan Stanley, Goldman Sachs, JPMorgan Chase, and Citigroup are backing the arrangement. The facility significantly exceeds last year's $2.5 billion loan and surpasses the company's roughly $10 billion target. Anthropic now expects over $65 billion in annualised revenue, representing more than a sevenfold increase from its pace at the end of last year. Additional banks including Barclays and Bank of America have joined the arrangement. The timing coincides with renewed activity in the US IPO market, positioning Anthropic for a substantial market debut.