Data Engineer (PySpark+SQL)

Lead API Engineer - IND

Engineering - Hyderabad, Telangana

About Gradera

At Gradera, we’re defining a new category of enterprise transformation called Software-Orchestrated Services™ (SoS™) — a governed blend of human expertise and digital intelligence that transforms how enterprises operate.

Our mission is to build intelligent digital workers that augment teams and automate work across the value chain, helping organizations become more efficient, agile, and resilient.

We don’t believe in one-size-fits-all solutions. Every engagement is tailored to the unique needs of each enterprise — grounded in governance, security, and reliability. By aligning technology with strategy, we empower our clients to achieve measurable outcomes and lead with confidence in a rapidly evolving digital landscape.

Lead – API Engineer

Overview

Key Responsibilities

•Provide technical leadership, mentorship, and guidance to the API engineering team

•Lead the design, implementation, and evolution of API architecture and backend services

•Champion API-first development, ensuring clear contracts and comprehensive documentation (OpenAPI/Swagger)

•Lead the implementations of APIs conforming to all NFRs including security, scalability, and performance.

•Ensure robust authentication, authorization, and data protection for all endpoints

•Drive adoption of best practices in API design, versioning, and integration

•Optimize API performance for low-latency, high-frequency interactions

•Oversee observability, monitoring, and alerting for all APIs and backend services

•Collaborate closely with product, UI, and runtime teams to deliver integrated solutions

•Collaborate with the SDET to ensure comprehensive test coverage and effective test data creation

•Lead the adoption of modern API tools, frameworks, and best practices

•Ensure engineering rigor, code quality, and documentation standards are met

•Facilitate clear communication, knowledge sharing, and effective documentation within the team

•Support team growth through coaching, feedback, and skills development

Core Qualities & Skills

•Proven experience leading API or backend engineering teams and delivering complex API projects

•Deep expertise in API architecture, design, and implementation (RESTful, GraphQL, gRPC etc.)

•Strong programming skills in relevant backend languages (e.g., Node.js, Python, Java, Go, etc.)

•Experience with API security, authentication, and authorization (OAuth, JWT, RBAC, PKCE, define fine-grained access controls using ReBAC)

•Experience with API documentation and standards (OpenAPI/Swagger, Use Case, JSON Schemas, etc.)

•Familiarity with data serialization with Protofbuf

•Experience with some API gateway is a must

•Strong understanding of performance optimization, scalability, and reliability for APIs

•Experience with observability, monitoring, and troubleshooting for backend services

•Strong collaboration and alignment skills across disciplines

•Willingness to learn, share knowledge, and adapt to evolving technologies

•System design skills and awareness of technical debt and tradeoffs

•Excellent communication, documentation, and stakeholder management abilities

•Comfort with ambiguity, discovery, and rapid change

•Commitment to engineering excellence, security, and responsible practices

Preferred Qualifications

•7+ years of hands-on API or backend engineering experience, with 2+ years in a technical leadership role

•Track record of architecting and delivering scalable, reliable API systems

•Experience with modern development practices (CI/CD, automated testing, code reviews)

•Demonstrated ability to mentor and grow engineers

•Experience working in cross-functional, agile teams

Highly Desirable

•Experience with API gateways (e.g., Envoy, Kong, Apigee) and service mesh patterns (e.g., Istio)

•Experience with event-driven and streaming architectures (pub/sub, callbacks, Kafka, etc.)

•Experience with cloud-native infrastructure and automated provisioning (e.g., Terraform)

•Experience building developer portals and self-service onboarding for APIs

•Experience with API Gateways (Apache APISIX, KrakenD, …)

•Ability to perform API Domain Modelling with a strong product orientation, aligning technical design with user and business needs

•Experience thriving in fast-paced, ambiguous environments and balancing rapid delivery with technical excellence

•Experience leading or working with distributed, multidisciplinary teams

Success Metrics

•API response time (median and p95)

•Uptime and reliability of critical services

•Test coverage for API and backend logic

•Developer velocity and time from API design to production

•Time to First Prototype (TTFP)

•Integration lead time for API consumers

•Technical debt reduction and architectural alignment

•Team growth, engagement, and retention

•Stakeholder satisfaction and cross-team collaboration

Company Description

VMax e-Solutions India Private Limited, based in Hyderabad, is a dynamic organization specializing in Open Source ERP Product Development and Mobility Solutions. As an ISO 9001:2015 and ISO 27001:2013 certified company, VMax is dedicated to delivering tailor-made and scalable products, with a strong focus on e-Governance projects across multiple states in India. The company's innovative technologies aim to solve real-life problems and enhance the daily services accessed by millions of citizens. With a culture of continuous learning and growth, VMax provides its team members opportunities to develop expertise, take ownership, and grow their careers through challenging and impactful work.

About the Role

We’re hiring a Senior Data Scientist with deep real-time voice AI experience and strong backend engineering skills.

1. You’ll own and scale our end-to-end voice agent pipeline that powers AI SDRs, customer support 2. agents, and internal automation agents on calls. This is a hands-on, highly technical role where you’ll design and optimize low-latency, high-reliability voice systems.

3. You’ll work closely with our founders, product, and platform teams, with significant ownership over architecture, benchmarks.

What You’ll Do

1. Own the voice stack end-to-end – from telephony / WebRTC entrypoints to STT, turn-taking, LLM reasoning, and TTS back to the caller.

2. Design for real-time – architect and optimize streaming pipelines for sub-second latency, barge-in, interruptions, and graceful recovery on bad networks.

3. Integrate and tune models – evaluate, select, and integrate STT/TTS/LLM/VAD providers (and self-hosted models) for different use-cases, balancing quality, speed, and cost.

4. Build orchestration & tooling – implement agent orchestration logic, evaluation frameworks, call simulators, and dashboards for latency, quality, and reliability.

5. Harden for production – ensure high availability, observability, and robust fault-tolerance for thousands of concurrent calls in customer VPCs.

6. Shape the voice roadmap – influence how voice fits into our broader Agentic OS vision (simulation, analytics, multi-agent collaboration, etc.).

You’re a Great Fit If You Have

1. 6+ years of software engineering experience (backend or full-stack) in production systems.

2. Strong experience building real-time voice agents or similar systems using:

STT / ASR (e.g. Whisper, Deepgram, Assembly, AWS Transcribe, GCP Speech)

TTS (e.g. ElevenLabs, PlayHT, AWS Polly, Azure Neural TTS)

VAD / turn-taking and streaming audio pipelines

LLMs (e.g. OpenAI, Anthropic, Gemini, local models)

3. Proven track record designing and operating low-latency, high-throughput streaming systems (WebRTC, gRPC, websockets, Kafka, etc.).

4. Hands-on experience integrating ML models into live, user-facing applications with real-time inference & monitoring.

5. Solid backend skills with Python and TypeScript/Node.js; strong fundamentals in distributed systems, concurrency, and performance optimization.

6. Experience with cloud infrastructure – especially AWS (EKS, ECS, Lambda, SQS/Kafka, API Gateway, load balancers).

7. Comfortable working in Kubernetes / Docker environments, including logging, metrics, and alerting.

8. Startup DNA – at least 2 years in an early or mid-stage startup where you shipped fast, owned outcomes, and worked close to the customer.

Nice to Have

1. Experience self-hosting AI models (ASR / TTS / LLMs) and optimizing them for latency, cost, and reliability.

2. Telephony integration experience (e.g. Twilio, Vonage, Aircall, SignalWire, or similar).

3. Experience with evaluation frameworks for conversational agents (call quality scoring, hallucination checks, compliance rules, etc.).

4. Background in speech processing, signal processing, or dialog systems.

5. Experience deploying into enterprise VPC / on-prem environments and working with security/compliance constraints.

Job Summary: We are seeking a talented and motivated Software Developer with 1-4 years of experience to join in Pune. The ideal candidate will be proficient in WPF (Windows Presentation Foundation) and C#, with a strong understanding of modern software development principles and architectural patterns. You will be responsible for designing, developing, and maintaining robust and scalable desktop applications, contributing to the full software development lifecycle within an agile team.

Key Responsibilities:

• Design, develop, test, and deploy high-quality desktop applications using WPF, XAML, and C#.
• Implement and maintain application logic following established architectural patterns such as MVVM (Model-View-ViewModel) and MVC (Model-View-Controller).
• Utilize threading concepts effectively to ensure responsive and performant user interfaces.
• Work with various database technologies to store and retrieve application data efficiently.
• Integrate with internal and external APIs to extend application functionality.
• Apply strong Object-Oriented Programming (OOP) principles in all development activities.
• Collaborate closely with product owners, UI/UX designers, and other developers to translate requirements into technical specifications and deliver effective solutions.
• Participate actively in all phases of the Software Development Life Cycle (SDLC), including requirements gathering, design, development, testing, deployment, and support.
• Adhere to Agile methodologies (Scrum/Kanban) to ensure timely delivery and continuous improvement.
• Contribute to code reviews, ensuring code quality, maintainability, and adherence to coding standards.
• Troubleshoot and debug issues, providing timely resolutions and maintaining application stability.
• Stay updated with the latest industry trends and technologies related to WPF and desktop application development.

Required Technical Skill Set:

• Must-Have Experience:
• WPF (Windows Presentation Foundation) and XAML: Demonstrated expertise in building complex and user-friendly desktop applications.
• C#: Strong proficiency in C# programming language, including .NET Framework or .NET Core.
• Threading Concepts: Solid understanding and practical experience with multi-threading and asynchronous programming to create responsive applications.
• Database: Experience with relational databases (e.g., SQL Server, MySQL, PostgreSQL) and ORM frameworks (e.g., Entity Framework).
• API Integration: Experience consuming and integrating with RESTful APIs.
• MVVM (Model-View-ViewModel): In-depth understanding and practical application of the MVVM architectural pattern.
• MVC (Model-View-Controller): Familiarity with the MVC architectural pattern.
• Object-Oriented Programming (OOP): Excellent grasp of OOP principles (Encapsulation, Inheritance, Polymorphism, Abstraction) and design patterns.
• Good to Have Experience:
• Windows Canvas / User Document: Experience with advanced UI elements and document handling in WPF.
• Web Programming (ASP.NET): Basic understanding or experience with ASP.NET for potential full-stack awareness.
• Task Management: Experience with task management tools (e.g., JIRA, Azure DevOps).
• Fast-paced Team Environment: Proven ability to thrive and deliver in a dynamic and fast-paced team setting.
• Agile Methodology / SDLC: Practical experience working in an Agile/Scrum environment and a strong understanding of the Software Development Life Cycle.

Qualifications:

• Bachelor's degree in Computer Science, Information Technology, or a related field.
• 1 to 4 years of hands-on experience in WPF desktop application development.

• Familiarity with the ASP.NET framework, SQL Server and design/architectural patterns (e.g. Model-View-Controller (MVC)
• 5 years of development experience using C# .NET
• Knowledge of at least one of the .NET languages (e.g. C#, Visual Basic .NET) and HTML5/CSS3
• Familiarity with architecture styles/APIs (REST, RPC)
• Understanding of Agile methodologies
• Strong attention to detail
• Excellent troubleshooting and communication skills
• Knowledge of REST and RPC APIs
• Able to work well in a team setting

● 1-2 years in outbound focused sales position desired; customer-oriented background

required (sales, support, customer service) in B2B preferably

● Bachelor’s degree in business, marketing, or related field

● Excellent communication and interpersonal skills

● The ability to generate leads independently.

● Willingness to learn and apply the fundamentals of the MEDDIC Sales process approach

● Great to have-Artificial Intelligence, Machine Learning and/or Computer Vision

● Knowledge of the AI industry and emerging technologies

Responsibilities:

·       Design, implement, and maintain network infrastructure, including routers, switches, and firewalls

·       Configure and manage BGP, OSPF and EIGRP routing protocols.

·       Maintain and troubleshoot Cisco & Aruba switches

·       Monitor and maintain the performance of the network using SolarWinds & PRTG

·       Implement and maintain Palo Alto, Fortinet firewall

·       Manage WAN transport, including VPN and MPLS connections

·       Support 802.11x wireless networks

·       Ensure high availability and performance of the network

·       Collaborate with other IT teams to provide technical support for network & security related issues

·       Keep up-to-date with new technologies and industry developments

Requirements:

·       Bachelors degree in Computer Science, Computer Engineering, or related field

·       Minimum of 7 years of experience in network & security engineering and support

·       Expertise in BGP, OSPF and EIGRP routing protocols

·       Strong knowledge of Cisco switching, SolarWinds, Palo Alto, Fortinet Firewall, WAN Transport, NAT and 802.11x Wireless.

·       CCNP or CCIE certification preferred

·       Strong problem-solving skills and ability to work in a fast-paced environment

·       Excellent written and verbal communication skills

·       Knowledge of STP, RSTP.

·       Knowledge of VLAN, ARP, Trunk ports, VRRP and Ether-Channel.

·       Knowledge of Port-Security.

Job Description:

• To resolve the tickets raised as per the defined standards of time, cost, and quality for increased customer satisfaction.

Skills and Experience

• Good SQL & PLSQL knowledge.
• Good Unix basic commands knowledge.
• Good Unix scripting knowledge will be an advantage.
• ANSI SQL
• Unix - Others/
• Experience - Fresher

You will be responsible for overseeing full-stack development as well as the R&D around creating various, unique, and bespoke solutions.

You should be able to quickly understand and support initiatives that will contribute to the goals and success of operations. You would also be working with various departments to coordinate and develop digital solutions for bespoke in-house software.

RESPONSIBILITIES

• Work with development teams and product manager to implement software solutions.

• Developing front end and back end website Architecture.

• Build user interactions on web pages.

• Develop and manage databases for functionalities.

• Designing and developing effective APIs.

• Test Software to ensure the responsiveness and efficiency of applications.

• Meeting both technical and consumer/client needs.

• Write technical documentation.

• Troubleshoot, debug, and review the code.

About the role:

We are looking for a highly motivated, highly energetic, results-driven Lead Generation Intern to join us.

As a Lead Generation Intern, you will be responsible for client prospecting; maintaining prospect database; fix meetings with prospects for the Sales team; and generating summarized reports of their key findings.

* Women wanting to start/restart their careers can also apply.

What we expect:

Must be qualified in BE/BCA/BTECH/BBA/MCA/MTECH

Candidates starting or pursuing MBA/PGDM/MMS Marketing preferred

Any prior experience in a customer-facing, lead generation, or sales role is preferred

Any experience of using CRM & social media tools will be useful

Experience of cold calling, writing cold email communication

What is in it for you?

We offer incentive pay-out on every deal closed from your converted lead

Certificate of internship completion

Our friendly yet focused approach to work promises a lot of fun times

Profile:

We are looking for a Backend Developer responsible for managing the interchange of data between the server and the users. Your primary focus will be development of all server-side logic, definition, and maintenance of the central database, and ensuring high performance and responsiveness to requests from the front-end.You'll be working alongside other engineers and developers, collaborating on the various layers of the infrastructure.

Job Responsibilities:

• Understand the lifecycle of a web app fully - browser-side, server-side, scalability, performance.
• Design, develop and own components of the product.
• Programming - ability to read/write enterprise quality code and make the right decision.
• Collaborate with the team and communicate effectively, to solve the problems and build, extend, optimize and refactor the back-end architecture.
• Generalist programmer with the ability to quickly learn and use new languages.
• Design and develop scalable, secure, and high-performance solutions.
• Experience working with relational and non-relational databases.
• At ease working with a Unix based system.
• Has worked with AWS/AmazonSES/EC2/Beanstalk/S3 storage.

Key Skills:

• Strong understanding of AWS, NodeJS, MySql, ExpressJS, Angular 2.
• Strong Programming background with an understanding of the flow of the product.
• Understanding of adaptive and responsive design, and the combination of them.
• A clear understanding of data structures, algorithms, and databases.
• Has completely built a product before including deployment and connecting with the front-end.
• Excellent analytical and problem solving.
• Can write maintainable, clean code and enforce it through code reviews.
• Maintains good documentation with the code written each day.
• A capability for a great learning curve.