Senior Software Engineer (AI / LLM experienced)

HackerOne is a global leader in Continuous Threat Exposure Management (CTEM). The HackerOne Platform unites agentic AI solutions with the ingenuity of the world’s largest community of security researchers to continuously discover, validate, prioritize, and remediate exposures across code, cloud, and AI systems. Through solutions like bug bounty, vulnerability disclosure, agentic pentesting, AI red teaming, and code security, HackerOne delivers measurable, continuous reduction of cyber risk for enterprises. Industry leaders, including Anthropic, Crypto.com, General Motors, Goldman Sachs, Lufthansa, Uber, UK Ministry of Defence, and the U.S. Department of Defense, trust HackerOne to safeguard their digital ecosystems. HackerOne was recognized in Gartner’s Emerging Tech Impact Radar: AI Cybersecurity Ecosystem report for its leadership in AI Security Testing and has been named a Most Loved Workplace for Young Professionals (2024).

HackerOne is at a pivotal inflection point in the security industry. Offensive security is no longer optional – it is the standard for forward-thinking companies that want to build trust and resilience in a world where AI-driven innovation and adversaries are moving faster than ever. With the industry shifting, HackerOne stands apart: we combine the ingenuity of the largest security research community with a best-in-class AI-powered platform, trusted by the world’s top organizations.

HackerOne Values

HackerOne is dedicated to fostering a strong and inclusive culture. HackerOne is Customer Obsessed and prioritizes customer outcomes in our decisions and actions. We Default to Disclosure by operating with transparency and integrity, ensuring trust and accountability. Employees, researchers, customers, and partners Win Together by fostering empowerment, inclusion, respect, and accountability.

Senior Software Engineer

Location : Pune

Working model : In office

About Company

HackerOne is the trusted security partner for forward-thinking organisations. We deliver proactive protection through a unique blend of human intelligence and cutting-edge AI. Our platform enables companies to continuously discover and fix vulnerabilities across their entire digital ecosystem before adversaries can exploit them.

At the heart of our approach is a deep commitment to customer success. We combine the industry’s largest, most skilled community of security researchers with a constantly evolving AI-enhanced vulnerability database to deliver actionable insights and measurable outcomes. Whether it’s through bug bounty programs, AI-driven red teaming, pentesting, agentic security workflows, or on-demand security reviews, we help our customers embed security throughout the software development lifecycle.

Our solutions are trusted by leaders across various industries, including Coinbase, GitHub, Goldman Sachs, PayPal, Hyatt, the U.S. Department of Defence, and more, who rely on HackerOne to reduce risk and build secure, resilient systems.

In recognition of our innovation and workplace culture, Fast Company named us a Best Workplace for Innovators in 2023 and a Most Loved Workplace for Young Professionals in 2024.

Position Summary

As a Software Engineer IV, you will work closely with the team's senior engineers, Product Managers, and Designers. You’ll also collaborate closely with our Pune in-office Customer Operations team and teams in the Netherlands and North America to solve real-world problems for our global customers.

In this role, you will lead complex initiatives and own end-to-end delivery of projects with moderate to large scope. You anticipate delivery risks, align stakeholders early, and maintain quality under tight timelines. Together with the Senior Engineering Manager, you will develop excellent capabilities to serve your customers by combining technical depth with operational discipline, balancing scope, risk, and speed, and surfacing trade-offs to enable informed decisions.

HackerOne is investing in a CTEM roadmap that includes agentic work. You will help drive the design and delivery of AI-assisted and agentic capabilities that are measurable, safe to operate, and tied to customer outcomes. You will also raise the bar for platform health and influence HackerOne’s engineering practices to accelerate execution.

You’ll combine your technological expertise, domain knowledge, and an unquestionable dedication to business objectives as you intersect with the engineering organisation. You identify and make systematic improvements to technical weaknesses you’ll find in your squad’s codebases, and in shared codebases across the company.

What You Will Do

• Your first month will be spent getting to know our company and your fellow HackerOnies through our well-organised and fun onboarding process called H.A.T.C.H.

• You will set up your development environment, get a feel for our engineering processes, and embark on a journey to fully understand the domain you will be working with.

• By day 30, you will have met most of your fellow Engineering HackerOnies, paired with other Software Engineers, developed a strong understanding of our codebases and Security Management products, and be prepared to start hands-on coding.

• By day 60, you will be involved in building a meaningful part of one of the projects and will have become more connected with our community and various stakeholders.

• By day 90, you’ll have impressed your colleagues with your technical contributions and earned trust and credibility within your squad and the whole Engineering team by presenting your progress during our review/demo sessions.

Long term, you will:

• Lead complex initiatives as a project lead together with stakeholders, designers and product leaders

• Build, ship and maintain highly available, performant and durable features, focused on (but not limited to) hacker-facing areas of our platform

• Deliver key results for impactful objectives by balancing scope, risk, and speed - raising risks early and creating shared context for why the work matters against the team goals and roadmap

• Be a part of cross-squad initiatives and influence shared engineering practices to accelerate execution across teams

• Onboard, guide, mentor, and delegate effectively to engineers; build leverage by creating clarity, reusable patterns, and strong technical direction

• Lead CTEM and agentic work, including:

  • Owning architecture for agentic workflows (tool use/function calling, orchestration, retrieval/RAG, human-in-the-loop patterns)

  • Building and introducing AI tools that improve delivery efficiency and reduce repetitive work; challenging legacy solutions that slow velocity

  • Proactively leading adaptation during change: re-scoping tasks during direction pivots, aligning with Product, and surfacing trade-offs clearly to move decisions forward

  • Implementing data loops that enable continuous optimisation (quality metrics, capacity/latency/cost trade-offs, velocity signals, and post-launch monitoring)
    

Who are you

• At first, a tech-savvy person who likes to work with people and teams

• Willing to learn from Senior and Staff Software Engineers

• Owner of your progress as an individual

• You bring 8+ years of software development experience within a modern SaaS environment

• You’re proficient in dynamically typed, OOP languages such as JavaScript, Python, Ruby or similar languages

• You have 5+ years of practical SQL experience (PostgreSQL preferred)

• You’ve worked extensively with cloud platforms (5+ years, AWS preferred), enabling scalable and automated infrastructure

• You have hands-on experience with ReactJS or similar modern front-end frameworks

• You’ve led end-to-end technical projects through all phases of the software development lifecycle, and are now looking to apply that experience toward building intelligent, automated, and AI-enhanced security products

• Must Have:

  • You have strong experience delivering AI-assisted features or agentic systems into production (or leading a substantial agentic initiative from prototype to reliable launch)

  • Experience with agentic architectures (tool use/function calling, workflow orchestration, retrieval/RAG, human-in-the-loop)

  • Experience with evaluation and data loops (golden sets, offline/online evals, experimentation, quality dashboards, regression monitoring)

  • You can clearly explain measurable trade-offs you’ve made (latency/cost/quality/capacity), and how you used data to drive decisions and iteration.

You’re effective in ambiguity: you partner with Product to clarify scope, surface trade-offs, and avoid custom service builds that slow teams later.

Preferred Qualifications

• Ruby on Rails

• React JS

• PostgreSQL

• GraphQL

• Amazon Web Services

Employment at HackerOne is contingent on a background check.

HackerOne is an Equal Opportunity Employer in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, pregnancy, disability or veteran status, or any other protected characteristic as outlined by international, federal, state, or local laws.

This policy covers layoffs, recalls, leave of absences, compensation, benefits, training, and apprenticeships. HackerOne makes hiring decisions based solely on qualifications, merit, and current business needs.

Pursuant to the San Francisco Fair Chance Ordinance, all qualified applicants with arrest and conviction records will be considered for the position.

HackerOne Values

HackerOne commits to maintaining a strong, inclusive culture built for our employees and our community of security researchers. We are driven by our five core values. We recognise that our mission is bigger than us, and therefore, we act with integrity at all times. As a team, we believe that transparency builds trust, so we default to disclosure in our communications. Each individual executes with excellence, creating an environment of greater alignment and greater autonomy. We win as a team and respect all people to empower everyone to learn from each other, innovate, and grow.

Job Benefits:

• Health (medical, vision, dental), life, and disability insurance*

• Equity stock options

• Retirement plans

• Paid public holidays and unlimited PTO

• Paid maternity and parental leave

• Leaves of absence (including caregiver leave and leave under CO's Healthy Families and Workplaces Act)

• Employee Assistance Program

*Eligibility may differ by country

We're committed to building a global team! For certain roles outside the United States, India, the U.K., and the Netherlands, we partner with Remote.com as our Employer of Record (EOR).

Visa/work permit sponsorship is not available.

Employment at HackerOne is contingent on a background check.

HackerOne is an Equal Opportunity Employer in the terms and conditions of employment for all employees and job applicants without regard to race, color, religion, sex, sexual orientation, age, gender identity or gender expression, national origin, pregnancy, disability or veteran status, or any other protected characteristic as outlined by international, federal, state, or local laws.

This policy applies to all HackerOne employment practices, including hiring, recruiting, promotion, termination, layoff, recall, leave of absence, compensation, benefits, training, and apprenticeship. HackerOne makes hiring decisions based solely on qualifications, merit, and business needs at the time.

For US based roles only: Pursuant to the San Francisco Fair Chance Ordinance, all qualified applicants with arrest and conviction records will be considered for the position.