
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.

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Core Responsibilities:
- Design, develop, and maintain backend services and APIs using Python or Golang.
- Write high-quality, testable, and maintainable code with a focus on performance and scalability.
- Implement automated tests and contribute to CI/CD pipelines.
- Collaborate with product, QA, and DevOps teams for end-to-end feature delivery.
- Troubleshoot production issues and provide timely resolutions.
- Participate in design and architecture discussions to improve system efficiency.
- Contribute to improving development processes, coding standards, and best practices.
Experience and Expertise:
- 2–4 years of experience in backend development with Python or Golang.
- Solid understanding of RESTful APIs, microservices, and distributed systems.
- Strong knowledge of data structures, algorithms, and OOPS principles.
- Hands-on experience with relational and/or NoSQL databases.
- Familiarity with Linux development, Docker, and basic cloud concepts (AWS/GCP/Azure).
- Proficiency with Git and version control workflows.
- Familiarity with AI-powered development tools or exposure to projects involving large language models (LLMs) is a plus.
Skills:
- Strong analytical and debugging skills with the ability to solve complex problems.
- Good communication and collaboration skills across teams.
- Ability to work independently with minimal supervision while being a strong team player.
- Growth mindset – eagerness to learn new technologies and improve continuously.
Job Title : Rust Tech Lead/Senior Rust Developer
Experience : 5+ Years
Relevant Experience in Rust : 3+ Years
Location : Gurugram
Employment Type : Full-Time
Role Summary :
- We are looking for a Rust Tech Lead/Senior Rust Developer with 5+ Years of software development experience, including 3 to 4 Years of expertise in Rust.
- In this role, you will lead a team of developers, guide technical decisions, and ensure the development of robust Rust applications.
Key Responsibilities :
- Lead and mentor a team of Rust developers.
- Develop and maintain high-quality Rust code.
- Collaborate with cross-functional teams to ensure software stability.
- Troubleshoot and resolve issues in Rust applications.
Qualifications :
- 5+ Years in Software Development.
- 3 to 4 Years of professional Rust experience.
- Strong problem-solving skills and experience in team leadership.
Preferred Skills :
- Systems programming and concurrent programming experience.
- Familiarity with Git and other version control systems.
-5+ years of experience working as a software engineer in a fast-paced environment.
-Well-versed with Golang or Javascript.
-Experience with AWS is a bonus
-You have analytical and problem-solving skills, and can communicate your ideas.
-Experience with WebRTC, iOS, Android, or C++ development is a bonus.
Responsibilities-
-Work closely with the founders and the team to plan, design, and build the next iterations.
-You will collaborate closely with other engineers on the team and lend your help in your areas of expertise.
-Build micro-services to support new functionality.
-Build best practices to improve the current API workflow
-Help design and develop the next iteration of our observability platform.
-Mentor and hire Junior Developers.
Not just a delivery company
RARA NOW is revolutionising instant delivery for e-commerce in Indonesia through data-driven logistics.
RARA NOW is making instant and same-day deliveries scalable and cost-effective by leveraging a differentiated operating model and real-time optimisation technology. RARA makes it possible for anyone, anywhere to get same day delivery in Indonesia. While others are focusing on one-to-one' deliveries, the company has developed proprietary, real-time batching tech to do many-to-many' deliveries within a few hours. RARA is already in partnership with some of the top eCommerce players in Indonesia like Blibli, Sayurbox, Kopi Kenangan and many more.
We are a distributed team with the company headquartered in Singapore, core operations in Indonesia and technology team based out of India
Future of eCommerce Logistics.
Data driven logistics company that is bringing in same day delivery revolution in Indonesia
Revolutionising delivery as an experience
Empowering D2C Sellers with logistics as the core technology
**About the Role**
Integration of user-facing elements developed by front-end developers with server side logic
Implementation of security and data protection
Integration of data storage solutions
Strong proficiency with JavaScript
Knowledge of Node.js and frameworks available for it
Understanding the nature of asynchronous programming and its quirks and workarounds
Good understanding of server-side templating languages and CSS preprocessor
Basic understanding of front-end technologies, such as HTML5 and CSS3
User authentication and authorization between multiple systems, servers, and environments
Understanding differences between multiple delivery platforms, such as mobile vs. desktop, and optimizing output to match the specific platform
Implementing automated testing platforms and unit test
Strong technical development experience in effectively writing code, performing code reviews, and implementing best practices on configuration management and code refactoring
Experience in working with vendor applications
Experience in making optimized queries to MySQL database
Proven problem solving and analytical skills
A delivery-focused approach to work and the ability to work without direction
Experience in Agile development techniques, including Scrum
Experience implementing and/or using Git
Ability to work collaboratively in teams and develop meaningful relationships to achieve common goals
Bachelor degree in Computer Science or related discipline preferred
Esper is looking for a software engineer to transform the customer experience
for developers and engineering teams using the platform of services to deploy
and build out their device fleets. You and your team will own services that will
enable customers to develop and customize their development process, along
with easing their use of Continuous Integration techniques for their software. We
need a leader that is experienced in delivering scalable multi-region fault tolerant
systems, is passionate about the developer tools space, is excited to have
software developers as their customers, and is obsessed about creating
compelling customer experiences.
In this role you will contribute to a critical and highly-visible function within the
Esper business. You will be given the opportunity to autonomously deliver the
technical direction of the service, and the feature roadmap. You will work with
extraordinary talent and have the opportunity to hire and shape the team to best
execute on the product. If you’re excited to have a large impact on Esper and the
device industry, you’ll find this role to be engaging, challenging, and full of
opportunities to learn and grow.
Key Responsibilities
Help drive business decisions with your technical input
Design, implement, test, deploy and maintain innovative software
solutions to transform service performance, durability, cost, and
security.
Use software engineering best practices to ensure a high standard of
quality for all of the team deliverables
Write high quality distributed system software
Work in an agile, startup-like development environment, where you are always working on the most important stuff.
Basic Qualifications
2 -4 years of professional software development experience
You’ve designed, built, scaled and maintained production services, and know how to compose a service oriented architecture.
Degree or foreign equivalent in Computer Science, Engineering, Mathematics, or a related field.
You write high quality, well tested code to meet the needs of your customers
You are comfortable with programming languages like Go, Python, Java
You’ve good understanding of databases system like Postgres. Extensive Knowledge about Postgres is a big plus.
You’ve have worked with Docker, Kubernetes and have fundamental understanding of distributed systems like Kafka, Elasticsearch
Preferred Qualifications
Experience taking a lead role developing complex software systems that have successfully been delivered to customers.
Experience in communicating with users, other technical teams and senior management to collect requirements, describe software product features, technical designs and product strategy.
Knowledge of professional software engineering practices & best practices for full software development life cycle, including coding standards, code reviews, source control management, continuous deployments, testing and operations
Demonstrated ability to mentor junior software engineers in all aspects of their engineering skill-sets.
What we think makes us special
Esper is a fast-growing, well-funded company where everyone matters and you can see your impact daily. We trust our teammates and offer intense ownership and therefore accountability. We’re inventing the future and building something special. The team really enjoys what we do and cares about your input. We don’t hire just to fill a spot, we want you to make a difference.
As you help us build this special company, Esper will take care of you. We offer flexible vacation, regular hack-days, competitive pay and benefits, and room for advancement. We hire capable veterans so we avoid the drama and trust in each other’s work. Our worldwide footprint mixes different cultures for a unique experience. We also like to have fun because we play just as hard as we work.
We are looking for a great Go developer who possesses a strong understanding of how best to leverage and exploit the language’s unique paradigms, idioms, and syntax. Your primary focus will be on developing Go packages and programs that are scalable and maintainable. You will ensure that these Go packages and programs are well documented and has a reasonable test coverage. You will coordinate with the rest of the team working on different layers of the infrastructure. A commitment to collaborative problem solving, sophisticated design, and quality product is essential.
Responsibilities
-
Writing scalable, robust,, testable, efficient, and easily maintainable code
-
Translating software requirements into stable, working, high performance software
-
Playing a key role in architectural and design decisions, building toward an efficient micro services distributed architectur
Skills
-
Strong knowledge of Go programming language, paradigms, constructs, and idioms
-
Knowledge of common Goroutine and channel patterns
-
Experience with the full site of Go frameworks and tools, including:
- Dependency management tools such as Godep, Sltr, etc.
- Go’s templating language
- Go’s code generation tools, such as Stringer
- Popular Go web frameworks, such as Revel
- Router packages, such as Gorilla Mux
-
Ability to write clean and effective Godoc comments
-
Familiarity with code versioning tools (such as Git, SVN, and Mercurial)
You have 5 years or more of Backend end development experience with expertise in designing and implementing high-performance applications.
Worked with and built high-performance products using Node Js/GoLang/ Python and have seen the product evolution cycle from PoC to Production
You have a deep understanding of design principles and can rightly judge/implement solutions to complex problems
You are capable of writing high-quality code that conforms to the standards and best practices in a particular language/framework.
You have experience building a product using a mainstream library or framework.
You love to own end to end responsibility, starting from defining the problem statement (either yourself or alongside your peers), development (PoC if needed), testing, releasing in staging & then production environment, and finally monitoring.
Previous work experience in product-based startups
Experience building for products that have scaled and have seen the product evolution
Understands the cryptocurrency landscapeOffers the best CTC in the market
Rejolut is among the fastest-growing and award winning Tech companies working on leading technologies namely Blockchain, Machine Learning & Artificial Intelligence, Complex mobile & Web Apps, IoT, etc.Rejolut is a venture-backed company with clients in over several countries namely Malaysia Airlines,gba global,my-earth,biomes, Dlg-hub,etc.
We are looking for Tech geeks having hands-on experience and in love with building scalable, distributed and large web/mobile products and tech solutions. He/She must be an excellent problem solver with passion to self-learn and implement web technologies (frontend + backend). He/She would be responsible for the architecture design, code review, and technology build and deployment activities of the product.
Responsibilities:-
-Work with the team to develop world-class tools through practical development and collaboration with the open source Go community
-Interact with internal and external developers and communities
-Work with the toolchain team and other engineering teams as well as the community on senior-level feature contributions to Golang, related compiler bug fixes, efficiency improvements, and optimisations, and some light packaging work where needed
-Accept, analyze, and respond to bug reports against tools packages in your area of responsibility
-Plan and track development and periodically report progress to team management.
- Own the product development from scratch.
- Architect scalable, distributed and large-scale web and mobile solutions from scratch.
- Code for fresh development and to troubleshoot and resolve issues.
- Writing reusable, testable, and efficient code.
- Creating database schemas that represent and support business processes.
- Design and implementation of low-latency, high-availability, and performant applications.
- Able to learn & implement new technology/framework/library at God Speed.
- Customer-focused, react well to changes, work with teams and be able to multitask.
- Experience and knowledge of open-source tools and frameworks, broader cutting edge technologies around server side development.
Desired Candidate Profile:-
- 1+ years of experience in open source compiler or tools development
- 1+ years of experience with the Go language, runtime and tools
- Experience with or exposure to the Linux kernel is helpful
- Bachelor's degree or higher in computer science, computer engineering, or a technology-related discipline
The following requirements are a plus:
-Experience with C/C++ toolchains and debuggers
-Advanced knowledge of Go language, compiler, library, runtime, and debug internals
-Practical experience developing Go tools for enterprise use
-Direct experience with Go tools community participation
-Knowledge of and experience with system tools internals (e.g. compilers, debug formats)
-Proficiency in multiple programming languages, both dynamic(Javascript, Python, Ruby, etc.) and strongly typed object-oriented language.
-Implementing automated testing platforms and unit tests.
-Must be a proven performer and team player that enjoys challenging assignments in a high energy, fast growing and start-up workplace.
-Good communication and interpersonal skills
Rejolut - As a Career Differentiator
- We are a young and dynamic team who are obsessed with solving futuristic and evolutionary business problems at scale with the next generation technology like blockchain, crypto and machine learning. Focuses on empowering people across the globe to be technically efficient, making advancements in technology and providing new capabilities that were previously thought impossible.
- We provide exposure to higher learning opportunities so that you can work on complex and cutting edge technology like React, React Native, Flutter, NodeJS, Python, Go, Svelte, WebAssembly. Strong expertise in blockchain and crypto technology and working with the networks like Hedera Hashgraph, Tezos, BlockApps, Algorand, Cardano.
- We maintain high end transparency with clients and employees as Visibility unlocks Efficiency and trust unlocks Visibility.
- Company is backed by two technology Co-founders, well-versed with consumer applications and their work has been downloaded millions of times and have led teams in leadership positions in companies like Samsung, Purplle, Loylty Rewardz.
Benefits :
> Health Insurance
> Work from Home
> Fast growth and more visibility into the company
> Experience to work on the latest technology
> Competitive Learning Environment with supportive co-workers
> Employee friendly HR Policies
> Paid leaves up to certain limits
> Competitive salaries & Bonuses
> Liberal working atmosphere
> Get mentored by the best in the industry
Schedule:
Day Shift/Flexible working hours
Monday to Friday









