Ruby on Rails Developer

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

What You’ll Do

• Build and scale backend services using Java & Spring Boot

• Work on API integrations (REST, SOAP), caching & rate limiting

• Contribute across the full SDLC – design, development, testing & deployment

• Solve problems around performance, scalability & reliability

What We’re Looking For

• Strong knowledge of Data Structures & Algorithms

• Experience with Java, Spring Boot, REST/SOAP

• Hands-on with system & solution design

• Database experience: MongoDB / PostgreSQL / MySQL / Oracle

• Good debugging skills & unit testing

• Familiarity with Git and AI coding assistants (Copilot, Claude, etc.)

Job Title: Python Developer (FastAPI)

Experience Required: 4+ years

Location: Pune, Bangalore, Hyderabad, Mumbai, Panchkula, Mohali 

Shift: Night Shift 6:30 pm to 3:30 AM IST

About the Role

We are seeking an experienced Python Developer with strong expertise in FastAPI to join our engineering team. The ideal candidate should have a solid background in backend development, RESTful API design, and scalable application development.

Required Skills & Qualifications

· 4+ years of professional experience in backend development with Python.

· Strong hands-on experience with FastAPI (or Flask/Django with migration experience).

· Familiarity with asynchronous programming in Python.

· Working knowledge of version control systems (Git).

· Good problem-solving and debugging skills.

· Strong communication and collaboration abilities.

•Hands on experience in Object oriented programming

•Hands on experience in Java, SpringBoot (min 2 years) or kafka or Cassandra or MongoDB

•Experience with developing/enhancing applications connecting to different Databases : Oracle/MySQL/Cassandra/MongoDB

•Strong knowledge of common Data structures and algorithms and when to use them.

•Experience in Xpath or XML or REST or JSON or protobuff

• Experience with software version control (such as git)

•Experience in working in an agile environment such as Scrum.

Preferable:

•Experience in public cloud PaaS (AWS, GCP, Azure)

•Real time stream data handling (Kafka, Kinesis

Neokred is a FinTech company based in Bangalore and an ISO 9001 | 27001 & 20000-1 and PCIDSS certified firm in Information and Data security. The company builds Consumer Tech for Financial Infrastructure stack to provide curated versions of embedded banking in the payment ecosystem. We've created a platform which enables Corporates, Banks, FinTech’s, Retail Companies, and Start-ups to launch their own banking services or financial products, such as issuance of co-branded cards, facilitating lending, and virtual bank accounts and KYC for their customers or employees with the help of low code plug and play technology stack.

BRIEF DESCRIPTION OF THE ROLE:

We are looking for an analytical, result driven Senior Java Developer who will use his or her understanding of programming languages and tools to build and analyse codes, formulate more efficient processes, solve problems, and create more seamless experience for users. 

Your KRAs will include the following:

• You will design, build, and own APIs and Services, which will be the core of the product.
• You will participate in continuing education and training to remain current on best practices, learn new programming languages and better assist other team members.
• You will part of developing ideas for new programs, products or features by monitoring industry developments and trends.
• You will have to take lead on projects, compile and analyse data, processes, and codes to troubleshoot problems and identify areas of improvement. 

YOU SHOULD POSSESS: 

• Minimum 4+ years of experience with Proficient understanding of Java, Hibernate, Springboot.
• luency in JAVA, Operating System may be required and Experience on Database such as MySQL or Postgre SQL.
• Proficiency with Springboot, Spring Security and Hibernate.
• Strong understanding of Computer Science Fundamentals, Data Structures and Algorithms, SOLID Design Principles and REST Patterns.
• Focus on efficiency, user experience and process improvement. • Excellent project and time management skills.
• Strong problem solving and communication skills.
• Ability to work independently or with a group.