Rust Tech Lead/Senior Rust 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

Backend Developer (4.5 – 7.5 Years Experience)

Company Description:

Idea Elan LLC is a product based company that provides comprehensive software solutionsfor

research facilities in Universities and Institutions worldwide.

Please visit www.IdeaElan.com for more information.

Key Responsibilities:

● Design and develop high-performance,scalable, and secure backend APIs and services

using .NET Core.

● Work withrelational (MS-SQL) andNoSQL (CosmosDB, MongoDB) databases to create

optimized data models and ensure data consistency and performance.

● Participate in code reviews and provide constructive feedback.

● Collaborate with front-end developers and other teams to deliver high-quality software.

● Write clean, maintainable, and efficient code while ensuring quality standards.

● Troubleshoot and debug complex issues, optimizing code for maximum performance and scalability.

● Stay updated with the latest trends in backend development and cloud technologies to drive innovation.

● Optimize database performance and ensure data integrity.

Required Experience:

● 4.5 -7.5 years of experience in backend development.

● Strong experience with .NET Core and building RESTful APIs.

● Proficient with MS-SQL and experience working with NoSQL databases like Cosmos DB and MongoDB.

● Hands-on experience with Azure Cloud services (e.g., Azure Functions, Azure Storage, API Management, Azure SQL Database,etc.).

● Understanding of software development principles such as object-oriented programming (OOP), design patterns, and SOLID principles.

● Experience with version control systems such as Git.

● Strong knowledge of asynchronous programming, microservices architecture, and cloud-native application design.

● Familiarity with CI/CD pipelines, containerization (Docker), and deployment automation is a plus.

● Excellent problem-solving and debugging skills.

● Ability to work in an Agile development environment and collaborate with cross-functional teams.

● Good communication and collaboration skills.

Role & Responsibilities

You will be working with the Rust compiler and will be responsible for compiling to alternate targets such as WebAssembly

You will be exposed with TDD for unit testing individual functions and integration testing for testing publicly exposed APIs

Working with a Git style workflow where every commit deploys to a stagingenvironment and merged pull requests deploy to production

Setting up CI/CD pipelines for testing and deployment (canary, staging) using Github actionsaccording to project needs

Developing software in Rust

Maintaining and improving existing rust codebases.

Summary: 

You will play a crucial role in designing, implementing, and optimizing smart contracts and zero-knowledge proof (ZK) circuits using Solidity and Rust programming languages. You will work closely with our development team to build scalable and secure blockchain solutions that leverage zero-knowledge proofs for privacy and scalability enhancements. 

It is an amazing opportunity to work on cutting edge fintech Key 

Responsibilities:

• Design, develop, and deploy smart contracts on Ethereum and other blockchain platforms using Solidity. 
• Implement zero-knowledge proof circuits and protocols in Rust for privacy-preserving and scalable blockchain applications. 
• Collaborate with the research team to explore and implement cutting-edge cryptographic techniques for zero-knowledge proofs. 
• Optimize smart contracts and zero-knowledge proof circuits for performance, scalability, and security. 
• Conduct code reviews and provide constructive feedback to ensure the quality and robustness of the codebase. 
• Stay updated with the latest advancements in blockchain technology, zero-knowledge proofs, and decentralized finance (DeFi). 
• Work closely with cross-functional teams including software engineers, and product managers to deliver high-quality blockchain solutions. 
• Contribute to the development of technical documentation, including specifications, architecture diagrams, and developer guides.

RESPONSIBILITIES:

- Help your engineers grow their skills and experience

- Conduct code reviews, and make technical contributions to product architecture as well as get involved in solving bugs and delivering small features

- Hold regular 1:1's with all members of the team, give regular and clear feedback around the individual's performance

- Foster technical decision-making on the team, but make final decisions when necessary

- Provide oversight and leadership to a team of developers to ensure timely execution of team and project deliverables

- Maintain up-to-date skills in software development technologies and a broad understanding of the business, business needs, and how applications/assets drive and support the business

REQUIREMENTS:

- 6+ years of experience in software development and 1+ in team management.

- In-depth technical experience in at least one of the core languages, frameworks, or technologies used in backend development.

- Ability to mentor junior software developers, as well as to collaborate with all stakeholders.

- Extensive experience in developing, deploying, and integrating software solutions.

- Proficiency in documenting processes and monitoring performance metrics.

- Knowledge of best practices related to design principles, API development and software architecture.

- Ability to keep up with software industry trends and innovation.

- Exceptional interpersonal and communication skills.

Synapsica is a growth stage HealthTech startup founded by alumni from IIT Kharagpur, AIIMS New Delhi, and IIM Ahmedabad. We believe healthcare needs to be transparent and objective, while being affordable. Every patient has the right to know exactly what is happening in their bodies and they don’t have to rely on cryptic 2 liners given to them as diagnosis.

Towards this aim, we are building an artificial intelligence enabled cloud based platform to analyze medical images and create 2.0 of advanced radiologist reporting.

We are backed by YCombinator and other marquee investors from India, US and Japan. We are proud to have GE, AIIMS, the Spinal Kinetics as our partners.

Join us, if you find this as exciting as we do!

Description:

Synapsica is looking for a Node.js/Python developer who is passionate about designing and implementing scalable solutions with highest quality. You will be responsible for creating high performance, responsive, and secure server-side programs to manage Synapsica platform. You will be responsible for designing, managing and supporting cloud platform and scaling our database. This role is ideal for you if you have a background in bakcned development and are looking for the next level of career growth in a fast paced, learning based and merit driven work environment.

Responsibilities:
- Design and development of our new platform modules from scratch. 
- Hands on implementation of our APIs and integrations. 
- Design, scaling and integration of new/existing databases.
- Ensuring the entire stack is designed and built for speed and scalability
- Design and construction of our REST APIs with best secutiry mechanisms.
- Design and implementation of continuous integration and deployment pipelines in tandem with the respective team members.
- Performance tuning and improvements in large scale systems.
- Ensuring responsiveness and cross-platform compatibility of applications.
- Owning and delivering end-to-end products, features, enhancements.

Requirements:
- Degree in Computer Science or related discipline with strong competencies in data structures, algorithms, and software design
- At least 4+ years of experience with writing Python/NodeJS/PHP/Ruby on Rails. 
- Prior experience of database design and management in MongoDB, including being up on the latest practices and associated versions.
- Experience in building highly scalable business applications, which involve implementing large complex business flows and dealing with huge amount of data.
- Familiarity with AWS (or equivalent) ecosystem with end-to-end cloud deployment.
- Experience implementing code level unit tests.
- Proficiency with Git / Version control.
- Appreciation for clean and well documented code
- Excellent verbal communication skills.
- Good problem solving skills.
- Attention to detail.
- Very high sense of ownership.
- Deep interest and passion for technology

• Write a significant amount of code for new and existing databases and related systems
• Scale and own these backend systems and databases
• Ship high-quality code and architecture
• Mentor engineers on the team, developing their skills and helping advance their careers
• Work with the founders to flesh out the future of the product
• Help shape the future of our engineering organization

Requirements

• A passion for working on deeply technical projects and wanting to work on distributed systems, concurrency & parallelism, replication protocols, file systems & correctness
• You have been building applications for 5+ years with C/C++ or Rust and have significant backend, database, or systems-level programming experience
• You have a BS/MS/Ph.D. in a scientific field or equivalent experience
• You want to work in a fast-paced, high-growth startup environment that respects its engineers and customers
• You are comfortable working with a 100% distributed engineering team, collaborating on GitHub, Slack, Zoom, etc. in the open and as a self-starter

Bonus points:

• Experience working on databases or other storage systems internals
• Experience with Apache Arrow, Apache Parquet
• Know how columnar databases work
• Know how to convert an algorithm to use SIMD instructions
• Good knowledge of Linux internals
• You’ve contributed to open-source libraries and actively participate in the development community (blogging, giving talks, meetups, tweeting, etc.)

What you'll do:

• Solve complex development problems and produce the highest quality code while striving to push technical boundaries
• Work closely with both external clients and internal, cross-functional product and technical teams to support multiple projects
• Maintain technical design documentation, communicating architectural and design changes to development teams
• Conduct regular design and code reviews, establishing and publishing quality and performance metrics
• Manage and foster a team-oriented environment, providing technical oversight to team members

Basic qualifications:

• Bachelor of Science
• 9+ years of experience working with .NET technologies, with advanced proficiency in C#
• A minimum of 4-5 years working with SQL Server Databases, designing new or altering existing table structures to meet project requirements
• Demonstrated knowledge of enterprise architecture and SOA services
• Strong background in web technologies and architectures
• Technical acumen and understanding of Agile technical practices and how they operate within an Agile organization
• Strong Communication Skills
• Proven ability to build, manage and foster a team-oriented environment

Preferred qualifications:

• Data-driven, analytical approach to problem solving and project management
• Experience working in a product-based IT company and/or banking and financial services company
• Familiarity with multiple implementation standards and methodologies, including Agile
• Experience working with ASP.NET MVC, Entity Framework, LINQ, NoSQL, Message Queue, and building Reusable Libraries