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We are looking for a Senior Systems Engineer with 10+ years of experience in systems-level engineering (Rust/C/C++), including 5+ years of production Rust, to design and build high-performance, low-latency, fault-tolerant trading infrastructure. Prior hands-on experience with financial trading systems is mandatory.

Responsibilities

1. Design, develop, and maintain high-performance backend services using Rust - Build scalable and reliable distributed systems capable of handling high request volumes - Optimize application performance, memory usage, and resource utilization - Design clean, maintainable, and well-tested software architecture
2. Collaborate with product, engineering, and DevOps teams to deliver production-ready solutions
3. Participate in architecture discussions, code reviews, and technical planning - Troubleshoot production issues and improve system reliability and observability - Write clean, well-documented, production-quality code following engineering best practices

Required Qualifications

1. 10+ years of professional systems programming experience in Rust, C, or C++ (5+ years production Rust)
2. Mandatory: hands-on experience with financial trading systems — exchanges, order books, matching engines, OMS/RMS, or market data systems (equities, F&O, FX, commodities, or crypto)
3. Strong understanding of exchange mechanics — order types, price-time priority matching, spot trading, derivatives (futures/perpetuals), options, margining and liquidation concepts
4. Strong experience building production-grade, low-latency, high-throughput backend applications
5. Solid understanding of distributed systems and concurrent programming — Raft/consensus, replication, snapshots, deterministic state machines, exactly-once semantics
6. Advanced concurrency: lock-free/wait-free structures, ring buffers, thread-per-core design, core pinning
7. Strong understanding of networking concepts — TCP/IP, UDP, multicast, real-time communication, asynchronous networking
8. Experience designing and implementing binary communication protocols for inter-service communication (SBE, Protocol Buffers, FlatBuffers, Cap'n Proto)
9. Experience with microservices architecture and event-driven systems - Experience with messaging systems such as Aeron, Kafka, NATS, or similar high-performance platforms
10. Strong understanding of in-memory data structures and efficient memory management — cache lines, memory ordering, NUMA, allocation-free design
11. Experience working with relational databases and caching systems
12. Experience working in Linux-based production environments
13. Familiarity with containerization and modern deployment practices
14. Strong debugging, profiling, and benchmarking skills (perf, flamegraphs, Criterion) - Excellent problem-solving and analytical abilities; ability to work independently and take ownership of technical deliverables

Preferred Technical Experience

1. Tokio, Tonic (gRPC), Serde, Tracing, Criterion, Cargo/Clippy/Rustfmt - Aeron, LMAX Disruptor, Chronicle, or FIX engines
2. Kernel-bypass networking concepts (io_uring, DPDK, AF_XDP); hardware timestamping
3. Lock-free or wait-free programming techniques
4. Options pricing / Greeks / volatility surface exposure

Preferred Qualifications

1. Experience designing highly available and fault-tolerant systems (active-active, consensus-based failover)
2. Deterministic simulation / property-based testing of stateful systems
3. Exposure to cloud infrastructure and production monitoring tools
4. Open-source contributions (openraft, TigerBeetle, tokio, etc.) or personal Rust systems projects

Selection Process

1. 3 Rounds of Technical Interview
2. 1 Round of Management Interview
3. Shortlisting based on work evidence (repo/PR/design doc/write-up of a hard problem solved)
4. Systems design deep-dive (order book / matching engine design), hands-on coding round, distributed systems round

Strong Data Scientist / AI Engineer / Generative AI Engineer profile.

Mandatory (Experience 1) - Must have 3+ years of hands-on experience in Data Science, Artificial Intelligence, Machine Learning, Deep Learning, NLP, or Generative AI application development.

Mandatory (Experience 2) - Must have strong hands-on experience in Python programming, backend development, API development, and production-grade application support.

Mandatory (Experience 3) - Must have experience working with Machine Learning and Deep Learning frameworks such as PyTorch, TensorFlow, Keras, or Scikit-learn.

Mandatory (Experience 4) - Must have hands-on experience in NLP use cases such as text classification, sentiment analysis, entity recognition (NER), semantic search, embeddings, or document understanding.

Mandatory (Experience 5) - Must have experience working with Large Language Models (LLMs) such as GPT, LLaMA, Mistral, Phi, Claude, Gemini, or similar models.

Mandatory (Experience 6) - Must have hands-on experience building or implementing Retrieval Augmented Generation (RAG) solutions, vector search, semantic search, or knowledge-based AI applications.

Mandatory (Experience 7) - Must have experience with Prompt Engineering and Generative AI frameworks such as LangChain, LangGraph, AI Agents, Azure OpenAI, or similar technologies.

Mandatory (Experience 8) - Must have experience developing, consuming, or integrating APIs using Python frameworks such as FastAPI, Flask, or similar technologies.

About AiSensy

AiSensy is a WhatsApp based Marketing & Engagement platform helping businesses like Skullcandy, Vivo, Rentomojo, Physicswallah, Cosco grow their revenues via WhatsApp.

• Enabling 80,000+ Businesses with WhatsApp Engagement & Marketing
• 400Crores + WhatsApp Messages done between Businesses and Users via AiSensy per year
• Working with top brands like Delhi Transport Corporation, Vivo, Physicswallah & more
• High Impact as Businesses drive 25-80% Revenues using AiSensy Platform
• Mission-Driven and Growth Stage Startup backed by Marsshot.vc, Bluelotus.vc & 50+ Angel Investors

Key Responsibilities

• Develop, maintain, and enhance mobile applications using Flutter.
• Collaborate with designers and backend developers to implement scalable and well-architected solutions.
• Create custom UI components, animations, and transitions to enhance user experience.
• Optimize mobile applications for maximum performance, speed, and scalability.
• Conduct code reviews, write unit tests, and ensure high code quality and maintainability.
• Debug and resolve technical issues, ensuring a seamless and bug-free experience for users.
• Implement push notifications, third-party integrations, and RESTful API integrations.
• Keep up-to-date with Flutter updates and mobile development best practices, continuously improving the app’s functionality.
• Contribute to project planning, including timelines, sprint planning, and task allocation.

Qualifications

• 5+ years of experience in mobile application development with at least 3 year of proven experience in Flutter.
• Demonstrable portfolio of Flutter applications in the Google Play Store or Apple App Store.
• Proficient in Flutter, Dart, and mobile development frameworks.
• Solid understanding of the full mobile development lifecycle, including publishing to app stores.
• Experience with RESTful APIs, third-party libraries, and integration of push notifications.
• Knowledge of state management (e.g., Provider, Riverpod, Bloc) and dependency injection.
• Familiarity with version control (e.g., Git) and CI/CD processes for mobile apps.
• Knowledge of both iOS and Android platform guidelines for design and development.
• Strong problem-solving skills and attention to detail.
• Ability to work independently and collaboratively in a fast-paced environment.
• Excellent communication and time management skills.
• Experience with Firebase, GraphQL, or similar backend services.
• Familiarity with native iOS/Android code for advanced customizations in Flutter.

• 3 to 5 years of experience in UI Development and hands on experience on Angular2 or Angular 2+, Node etc.
• Exposure to cross browser compatibility issues, SCSS as the CSS macro-processor, sprites etc.
• Experience with Jira, SVN, Git will be added advantage
• Passionate and eager to learn new technologies
• Intimately knowledgeable about all things web and mobile
• Demo able portfolio on website or GitHub will be given preference
• Must have knowledge on Java script, jQuery, ECMAScript
• Strong proficiency in JavaScript (ES6) or TypeScript
• Familiarities with modern JavaScript tools, like npm and webpack
• Excellent technical design, problem solving and debugging skills.
• Experience building JavaScript/CSS Frameworks or shared component libraries used in large scale production websites.
• Understands frontend software design patterns (e.g. asynchronicity, data binding, modules, objects, promises).
• Knowledge of professional software engineering practices & best practices for the full software development life cycle, including coding standards, code reviews, source control management, build processes, testing, and operations.
• Working with MVVM, MVP, MVC patterns

Requirements

• Convert design to Angular 5 components
• Use SCSS as the CSS macroprocessor
• Integrate the Angular services with APIs from the backend team
• Implement UI development best practices to write optimized and non-buggy code
• Work in Agile environment with sprint releases ranging from 2 to 4 weeks
• Feasibility study of requirement and suggest multiple approaches for a problem after sufficient RnD
• Keep abreast with trending recent UI tools, technologies, plugins and software in the industry
• “Roll-up your sleeves” attitude to get things done
• Test your screens using a tool for all browsers and resolution compatibility
• Handle and track tasks assigned using Agile methodology
• Strong commitment towards quality and schedule.
• Cross team coordination